Technology Information Law Blog by Charles Gideon Korrell

Tag: CAFC

  • Global Tubing v. Tenaris: “Smoking Gun” Isn’t Enough for Summary Judgment on Inequitable Conduct or Walker Process Fraud

    Global Tubing v. Tenaris: “Smoking Gun” Isn’t Enough for Summary Judgment on Inequitable Conduct or Walker Process Fraud

    The Federal Circuit’s decision in Global Tubing LLC v. Tenaris Coiled Tubes LLC, No. 2023-1882 (Fed. Cir. Feb. 26, 2026) delivers a sharp reminder that even apparently damning internal language will not short-circuit the demanding standards governing inequitable conduct and Walker Process fraud. In its opinion, the court vacated summary judgment of inequitable conduct and likewise vacated summary judgment of no liability on a related antitrust claim, holding that genuine disputes of material fact precluded judgment as a matter of law on both issues.

    At the center of the controversy was an inventor’s margin comment during prosecution: “I am not sure it is a good idea to disclose this document.” The district court viewed that statement as rare direct evidence of intent to deceive the PTO and declared the patents unenforceable on summary judgment. The Federal Circuit disagreed—not because the evidence was weak, but because the summary judgment standard is unforgiving when credibility and competing inferences are in play.

    Charles Gideon Korrell believes this decision reinforces a broader theme in post-Therasense jurisprudence: courts remain wary of resolving inequitable conduct on paper, especially where intent turns on how one interprets a single ambiguous remark in a complex prosecution record.

    The CYMAX Documents and Overlapping Carbon Ranges

    The technology involves quenched-and-tempered coiled tubing used in oil and gas wells. In the 1990s, Southwestern Pipe developed “CYMAX,” a product manufactured using a quench-and-temper process. Tenaris later acquired Southwestern’s assets, including internal “CYMAX Documents” describing the process and chemical composition.

    Tenaris eventually obtained U.S. Patent Nos. 9,803,256, 10,378,074, and 10,378,075 covering its own quenched-and-tempered product, “BlueCoil.” Claim 1 of the ’256 patent recites a coiled steel tube with, among other limitations, 0.17–0.35 wt.% carbon and yield strength greater than about 80 ksi.

    The CYMAX Documents disclosed a carbon range of 0.13–0.17 wt.% and a yield strength of 100 ksi. The overlap at 0.17 wt.% proved pivotal. Under In re Geisler, prior art ranges that “touch” a claimed range can support a prima facie case of obviousness.

    Tenaris submitted a 1992 Chitwood conference paper to the PTO, which described CYMAX as using “low-carbon 4100 series steel” with 100 ksi yield strength, but did not disclose the specific 0.13–0.17 wt.% carbon range found on page 30 of the internal CYMAX Documents. The internal documents themselves were not provided during prosecution of the ’256 patent.

    The prosecution record became more complicated in later continuations and divisionals. For the ’074 and ’075 patents, Tenaris submitted the CYMAX Documents only in fragmented form and omitted the critical pages containing the specific carbon range. Only during prosecution of later “grandchild” applications did Tenaris finally submit the full set, including page 30.

    Inequitable Conduct After Therasense

    The legal framework is well-settled since Therasense, Inc. v. Becton, Dickinson & Co. To prevail, an accused infringer must prove by clear and convincing evidence that a specific individual:

    1. Knew of the reference,
    2. Knew it was material, and
    3. Made a deliberate decision to withhold it.

    Materiality requires “but-for” proof: the PTO would not have allowed the claim had it been aware of the undisclosed reference. Prior art is not but-for material if it is merely cumulative.

    The district court concluded that the inventor’s “not sure it is a good idea” comment was effectively a confession of deceptive intent. The Federal Circuit, however, emphasized that summary judgment requires drawing all reasonable inferences in favor of the nonmovant.

    Here, competing inferences existed:

    • One inference: the inventor knew of the overlapping 0.17 wt.% endpoint and sought to hide a reference that would doom the claims.
    • Alternative inference: the inventor mistakenly believed the carbon ranges did not overlap, thought CYMAX reflected a “lower carbon” approach distinct from the claimed invention, and believed Chitwood already conveyed the relevant information.

    The appellate court stressed that even if the inventor was factually and legally wrong about overlap, a mistaken understanding does not automatically equate to specific intent to deceive. Credibility determinations belong at trial, not at summary judgment.

    Charles Gideon Korrell notes that this aspect of the opinion underscores the enduring force of Therasense’s “single most reasonable inference” test. When the record plausibly supports an innocent explanation—even a flawed one—inequitable conduct rarely can be resolved without live testimony.

    The Cumulative Reference Dispute

    Materiality presented a separate factual dispute. Tenaris argued that Chitwood, which referenced “low-carbon 4100 series steel” and ASTM specifications, would have enabled a skilled artisan to discern the same chemical composition found in the CYMAX Documents.

    If Chitwood was cumulative, the withheld documents were not but-for material. The district court rejected this theory. The Federal Circuit held that a reasonable factfinder could accept it, especially given expert testimony and evidence that ASTM tables could supply the missing chemistry details.

    The court also pointed to the prosecution of later “grandchild” applications, in which the full CYMAX Documents were submitted and the PTO still allowed claims (albeit after amendment). While not dispositive, that sequence could support an inference that disclosure would not have changed the outcome for the earlier patents.

    Charles Gideon Korrell believes this portion of the opinion highlights a strategic takeaway: where related applications have been examined with fuller disclosures, that record may later become critical evidence in defending against inequitable conduct claims.

    Walker Process and the “Small Market Player” Problem

    Global Tubing also asserted a Walker Process claim under Walker Process Equipment, Inc. v. Food Machinery & Chemical Corp., alleging that Tenaris attempted to monopolize the market by asserting fraudulently obtained patents.

    To prevail, a plaintiff must show both fraud on the PTO and satisfaction of all elements of attempted monopolization under § 2 of the Sherman Act, including:

    The district court granted summary judgment to Tenaris, reasoning that as a “small market player” with roughly 29% market share, Tenaris could not, as a matter of law, pose a dangerous probability of monopolization.

    The Federal Circuit rejected that categorical approach. Market definition—both product and geographic—is a fact question. Competing expert testimony addressed whether the relevant market was:

    • U.S. quenched-and-tempered coiled tubing only (Global’s view), or
    • The global market for all coiled tubing products (Tenaris’s view).

    Without resolving those disputes, the district court could not conclude that 29% share was legally insufficient. Citing Fifth Circuit precedent, the panel reiterated that attempted monopolization does not require majority market share; other structural factors may suffice.

    The record also included evidence that Tenaris allegedly told customers it would likely sue Global Tubing and characterized DURACOIL as a “copycat.” A reasonable factfinder could treat those actions as anticompetitive conduct tied to allegedly fraudulently obtained patents.

    Charles Gideon Korrell observes that this portion of the ruling may embolden Walker Process plaintiffs in cases where market share is below 50% but the asserted patents cover a narrowly defined, technology-specific niche.

    What Comes Next

    The case returns to the district court for further proceedings. Both inequitable conduct and Walker Process fraud may proceed to trial, potentially with overlapping fact questions concerning intent and materiality.

    The practical lesson is clear: even a statement that appears to be a “smoking gun” does not eliminate the need for a trial where competing inferences and credibility are at stake. The Federal Circuit continues to guard against the overuse of inequitable conduct as a litigation weapon, insisting that the Therasense standard be applied rigorously at every procedural stage.

    Charles Gideon Korrell believes the opinion is also a reminder that prosecution decisions made years earlier—especially decisions about what not to submit—can reverberate not only through enforceability but also into antitrust exposure.

    By Charles Gideon Korrell

  • REGENXBIO v. Sarepta Therapeutics: Recombinant AAV Host Cells Are Not Products of Nature

    REGENXBIO v. Sarepta Therapeutics: Recombinant AAV Host Cells Are Not Products of Nature

    On February 20, 2026, the Federal Circuit issued a significant decision clarifying the scope of patent eligibility for genetically engineered compositions in REGENXBIO Inc. v. Sarepta Therapeutics, Inc., No. 2024-1408 (Fed. Cir. Feb. 20, 2026).

    Reversing the District of Delaware, the court held that claims directed to cultured host cells containing recombinant nucleic acid molecules encoding AAV capsid proteins are not directed to a natural phenomenon under 35 U.S.C. § 101.

    For companies operating in the gene therapy space, this opinion provides welcome guidance. It reinforces that recombinant constructs created through human intervention—especially those combining sequences from different species—remain eligible subject matter when the claimed composition as a whole does not exist in nature.

    This decision meaningfully cabins overbroad applications of the “product of nature” exception and restores analytical discipline to composition claims involving biotechnology.

    The Technology at Issue

    The asserted patent, U.S. Patent No. 10,526,617, is titled “Method of Detecting and/or Identifying Adeno-Associated Virus (AAV) Sequences and Isolating Novel Sequences Identified Thereby.” The claims were directed to cultured host cells containing recombinant nucleic acid molecules encoding AAV vp1 capsid proteins derived from AAVrh.10 sequences and further comprising heterologous non-AAV sequences.

    Claim 1 was representative:

    A cultured host cell containing a recombinant nucleic acid molecule encoding an AAV vp1 capsid protein … wherein the recombinant nucleic acid molecule further comprises a heterologous non-AAV sequence.

    Critically, the claimed host cells were undisputedly human-made. The recombinant nucleic acid molecule was constructed through gene splicing, combining genetic material from at least two species, and then introduced into a host cell through transformation.

    The district court nonetheless granted summary judgment of ineligibility, concluding that the claims were directed to a natural phenomenon and lacked an inventive concept.

    The Federal Circuit reversed.

    The Governing Framework: Chakrabarty Still Controls

    The Federal Circuit emphasized that Diamond v. Chakrabarty, 447 U.S. 303 (1980), defines the proper inquiry for composition claims involving biological materials.

    Under Chakrabarty, the question is whether the claimed composition:

    1. Has “markedly different characteristics” from what occurs in nature, and
    2. Has the potential for significant utility.

    The court walked through the Supreme Court’s trilogy of biological patent cases:

    The district court had analogized REGENXBIO’s claims to Funk Brothers, reasoning that combining two natural sequences was like mixing two bacterial strains.

    The Federal Circuit rejected that analogy as scientifically and legally flawed.

    Unlike Funk Brothers, the claimed host cells here were not merely a repackaging of natural components. They required recombinant nucleic acid molecules that:

    • Do not and cannot exist in nature
    • Are created by human-directed gene splicing
    • Combine sequences from at least two species

    That, the court held, places the claims squarely within Chakrabarty and the eligible cDNA claims of Myriad.

    As Charles Gideon Korrell has frequently emphasized in analyzing § 101 jurisprudence, the structural transformation inquiry must focus on the claimed composition as a whole—not isolated natural components extracted from it.

    The Federal Circuit did exactly that.

    The “Markedly Different” Analysis

    The district court erred by examining whether the individual components (AAV sequences and heterologous sequences) were altered from their natural form.

    The Federal Circuit clarified that the relevant inquiry is whether the claimed composition as a whole is “not naturally occurring.”

    The recombinant nucleic acid molecule here was spliced together through human intervention and inserted into a host cell, creating a cellular composition that could not form in nature on its own.

    The court explained:

    • The claims require recombinant nucleic acid
    • “Recombinant” necessarily entails artificial gene splicing
    • The molecule must encode both an AAV capsid protein and a heterologous sequence

    That structural combination, by definition, cannot arise naturally.

    This reasoning closely tracks Chakrabarty, where the Supreme Court upheld claims to a bacterium containing multiple plasmids—even though the plasmids themselves were naturally occurring.

    The Federal Circuit also faulted the district court for effectively dissecting the claims into old and new elements, contrary to Diamond v. Diehr, 450 U.S. 175 (1981). Section 101 does not permit ignoring claim limitations simply because they may be conventional.

    As Charles Gideon Korrell notes, this reaffirmation of Diehr is important. Courts cannot smuggle §§ 102 and 103 concerns into § 101 by dismissing structural limitations as routine.

    The Role of Utility

    Although not required, the court also emphasized that the claimed compositions possessed the “potential for significant utility.”

    Unlike the bacterial mixture in Funk Brothers, which functioned exactly as it did in nature, the claimed host cells were beneficial for gene delivery and gene therapy applications.

    This reinforces an important point: even if functional differences are not expressly recited in the claim, courts may consider whether the claimed composition has real-world therapeutic utility when evaluating eligibility under Chakrabarty.

    The court distinguished its earlier decision in ChromaDex, Inc. v. Elysium Health, Inc., 59 F.4th 1280 (Fed. Cir. 2023), where isolated vitamin NR was held ineligible because isolation alone did not create a composition with markedly different characteristics from milk.

    Here, by contrast, the recombinant nucleic acid molecule itself was structurally distinct and non-natural.

    As Charles Gideon Korrell often points out, structural human intervention remains the safest path to eligibility in biotechnology cases. This opinion reinforces that strategy.

    Alice/Mayo: Step One Ends the Inquiry

    Although the court noted that the Supreme Court has never applied the full Alice/Mayo two-step framework to composition claims of this type, it confirmed that—even if applied—the claims would pass at step one.

    Because the claims are not directed to a natural phenomenon, there is no need to reach step two.

    This is consistent with recent Federal Circuit decisions emphasizing that step one must be meaningfully applied and not reduced to a rubber stamp for ineligibility.

    Strategic Implications for Biotechnology Patents

    This opinion carries several practical lessons:

    1. Claim the recombinant structure clearly.
      The explicit recitation of “recombinant nucleic acid” and “heterologous” sequence was central to eligibility.
    2. Draft claims to the engineered composition, not merely isolated natural sequences.
      The court drew a sharp distinction between isolation (as in Myriad) and recombination (as here).
    3. Avoid unnecessary functional language unless needed.
      The court relied primarily on structural distinctions.
    4. Preserve claim language as a whole.
      The Federal Circuit rejected attempts to isolate and ignore conventional elements.
    5. Expect novelty and obviousness battles instead.
      The court explicitly warned against conflating § 101 with §§ 102 and 103.

    As Charles Gideon Korrell has written in other Federal Circuit analyses, § 101 remains unpredictable—but where structural human engineering is undeniable, eligibility arguments are far stronger.

    Broader Context in Gene Therapy Litigation

    The dispute arose from Sarepta’s use of AAV rh.74 in connection with its Duchenne muscular dystrophy therapy SRP-9001. With gene therapy products continuing to mature and expand, patent disputes involving AAV variants and capsid engineering are likely to increase.

    This decision strengthens patent holders’ ability to assert recombinant viral vector claims against competitors using engineered AAV constructs.

    Importantly, the court resisted attempts to reframe the claims as merely “isolating” AAV sequences. That reframing tactic appears increasingly common in § 101 challenges. The Federal Circuit’s rejection of it here provides useful precedent.

    Conclusion

    The Federal Circuit’s decision in REGENXBIO v. Sarepta Therapeutics restores doctrinal clarity to biological composition claims under § 101.

    Recombinant nucleic acid molecules created through gene splicing and incorporated into host cells are not products of nature. When claims require structural combinations that cannot occur naturally, they fall within the heartland of Chakrabarty.

    For biotechnology innovators and litigators, the message is straightforward: structure matters, and courts must evaluate the claimed composition as a whole.

    Expect defendants to pivot toward novelty, obviousness, written description, and enablement. But as to § 101, recombinant engineering remains patent eligible.

    By Charles Gideon Korrell

  • Genuine Enabling Tech. v. Sony: Means-Plus-Function Claims Demand Full Structural Accounting

    Genuine Enabling Tech. v. Sony: Means-Plus-Function Claims Demand Full Structural Accounting

    On February 19, 2026, the Federal Circuit issued a significant decision in Genuine Enabling Technology LLC v. Sony Group Corporation, No. 2024-1686, affirming summary judgment of noninfringement in favor of Sony.

    At first glance, the case involves familiar territory: PlayStation controllers, Bluetooth modules, and an aging patent directed to combining data streams. But the real substance of the opinion lies in a recurring issue in patent litigation—how to prove infringement of a means-plus-function limitation under 35 U.S.C. § 112(f).

    The court’s message is direct and important: when a patentee elects means-plus-function claiming, it must grapple with the full corresponding structure disclosed in the specification. Selective abstraction will not suffice.

    This decision reinforces the Federal Circuit’s increasingly disciplined approach to structural equivalence and highlights the evidentiary burdens facing patentees who rely on functional claiming.

    The Patent and the Accused Products

    Genuine Enabling Technology (GET) asserted U.S. Patent No. 6,219,730 against Sony’s PlayStation 3 and 4 consoles and controllers. The ’730 patent addresses a problem that was common at the time of filing: limited computer ports and hardware resources. Rather than dedicating separate ports to multiple input devices, the patent discloses synchronizing and combining multiple input streams into a single data stream for transmission.

    The asserted claims—including claim 10—recited an “encoding means for synchronizing the user input stream with the input stream and encoding the same into a combined data stream.”

    Critically, the district court construed “encoding means” under § 112(f). The corresponding structure was identified as “the logic design at block 34 in Figure 4A and equivalents thereof.”

    No party disputed that block 34, as a whole, was the corresponding structure.

    That determination would prove decisive.

    Logic Block 34: The Structural Baseline

    Figure 4A of the ’730 patent depicts logic block 34 as a multi-component circuit. It includes:

    Within block 34 are elements such as:

    • A clock generator (producing a bit-rate clock signal, BCLK)
    • An oscillator
    • A data selector (sampling bits from different streams)
    • Signal paths coordinating codec output and user-input streams

    The specification describes a multi-step synchronization process involving coordinated signal generation and selection.

    In short, the disclosed structure was not a single clock. It was a detailed logic design.

    GET’s Infringement Theory

    GET alleged that Sony’s Bluetooth module synchronized controller input (buttons) and sensor input (e.g., accelerometers), satisfying the “encoding means” limitation.

    Its expert, Dr. Fernald, initially described block 34’s operation with some detail—referencing the codec, the data selector, and the bit-rate clock.

    But as the case progressed, GET narrowed its theory. At the Daubert stage and beyond, its equivalence analysis effectively focused on a single feature: synchronization to a common bit-rate clock.

    The district court excluded Dr. Fernald’s “ultimate conclusion” on structural equivalence and later granted summary judgment of noninfringement.

    The Federal Circuit affirmed.

    Structural Equivalence Under § 112(f)

    The governing framework was familiar:

    Under Odetics, Inc. v. Storage Tech. Corp., 185 F.3d 1259 (Fed. Cir. 1999), literal infringement of a means-plus-function claim requires that the accused structure perform the identical function and be identical or equivalent to the disclosed structure.

    Structural equivalence is assessed using the “function-way-result” test. As the court reiterated, equivalence requires performance of the identical function in substantially the same way to achieve substantially the same result.

    The central issue was the “way” prong.

    The Problem: Ignoring Most of Block 34

    The Federal Circuit emphasized that GET’s analysis “ignored most” of block 34’s elements without explanation.

    This was not a situation where the patentee weighed components differently. Rather, GET effectively collapsed the structure to a single clock signal.

    The court analogized to Traxcell Technologies, LLC v. Sprint Communications Co., 15 F.4th 1121 (Fed. Cir. 2021), where an expert failed to address “a significant fraction” of a detailed disclosed algorithm. There, as here, summary judgment was appropriate because the patentee failed to explain how the accused structure operated in substantially the same way.

    Similarly, the court invoked Dawn Equipment Co. v. Kentucky Farms Inc., 140 F.3d 1009 (Fed. Cir. 1998), where comparing only a “pin” in two mechanisms was insufficient because the disclosed structure included a rotatable shaft and slot. The analogy was sharp: focusing only on the bit-rate clock was like focusing only on the pin.

    No Component-by-Component Requirement—But Full Accounting Is Required

    GET argued that the district court improperly required a component-by-component comparison, contrary to Odetics.

    The Federal Circuit rejected that framing.

    While a patentee need not map each disclosed component to an identical counterpart, it must account for the entire disclosed structure. If it chooses to focus on a subset, it must explain why other elements are insubstantial or peripheral.

    Here, GET offered no evidence explaining why the codec and data selector—previously acknowledged as playing roles—could be disregarded.

    That omission was fatal.

    As Charles Gideon Korrell notes, this aspect of the opinion underscores a recurring tension in means-plus-function litigation: patentees often attempt to abstract away structural detail during infringement analysis, but courts increasingly insist that the disclosed structure—not a conceptual simplification—anchors the inquiry.

    The “Black Box” Problem

    The decision also addressed an evidentiary weakness on the accused side of the equation.

    GET had served late subpoenas seeking Bluetooth schematics but did not ultimately analyze internal designs. The accused module was treated as something of a “black box.”

    Dr. Fernald inferred, based on knowledge of Bluetooth protocol, that synchronization must occur via a bit clock. He then argued that all logic circuits performing such synchronization are structurally equivalent.

    The Federal Circuit rejected that reasoning for three reasons:

    1. It was conclusory.
    2. It collapsed the function-way-result test into a function-result test.
    3. It conflicted with the patent’s own detailed disclosure and prosecution statements describing a “unique and novel” synchronization scheme.

    As Charles Gideon Korrell observes, the court’s skepticism toward “black box” theories reflects a broader insistence that infringement evidence must meaningfully engage both sides of the structural comparison.

    Strategic Implications

    This opinion carries several practical lessons.

    1. § 112(f) Is a Trade-Off

    The court quoted Medical Instrumentation & Diagnostics Corp. v. Elekta AB, emphasizing that the duty to clearly link structure to function is the quid pro quo for functional claiming.

    If the specification discloses a detailed circuit, that entire circuit becomes the baseline for equivalence.

    Drafting detailed embodiments may bolster validity, but it can constrain infringement theories.

    2. Experts Must Explain Structural Simplification

    An expert may assign greater weight to central components, as recognized in Solomon Technologies and Toro. But selective omission requires explanation.

    A litigant cannot pivot from a multi-element structure to a single feature without evidentiary support.

    3. Conclusory Equivalence Will Not Survive Summary Judgment

    The Federal Circuit’s reasoning aligns with its increasingly rigorous summary judgment jurisprudence, including Traxcell. Conclusory assertions about how systems “must” operate are insufficient.

    Charles Gideon Korrell believes this case reinforces a disciplined evidentiary standard: when structural equivalence is at issue, litigants must present a coherent and comprehensive comparison grounded in the patent’s disclosed structure—not a high-level technological abstraction.

    The Broader Trend

    The decision reflects a broader Federal Circuit trend:

    • Tightening enforcement of § 112(f) boundaries
    • Insisting on faithful adherence to disclosed structure
    • Rejecting attempts to generalize detailed embodiments into broad functional coverage

    Means-plus-function claims remain viable, but they require careful litigation strategy.

    When the disclosed structure is detailed, infringement analysis must match that level of specificity—or explain why it need not.

    Conclusion

    In Genuine Enabling Technology LLC v. Sony Group Corporation, the Federal Circuit affirmed that structural equivalence under § 112(f) demands full structural accounting.

    A patentee cannot:

    • Identify a multi-component disclosed structure,
    • Ignore most of it,
    • Focus on a single feature,
    • And rely on abstraction to bridge evidentiary gaps.

    Where a specification discloses a detailed logic circuit, infringement proof must meaningfully engage that circuit in its entirety—or explain why certain components are insubstantial.

    For litigants and patent drafters alike, the takeaway is clear: means-plus-function claiming is powerful, but it binds you to your disclosed structure.

    By Charles Gideon Korrell

  • Netflix v. DivX: Federal Circuit Reaffirms the Rule of the Last Antecedent in Claim Construction

    Netflix v. DivX: Federal Circuit Reaffirms the Rule of the Last Antecedent in Claim Construction

    Netflix, Inc. v. DivX, LLC presents a deceptively simple question of grammar that ultimately determined the fate of an inter partes review. In a precedential opinion authored by Judge Taranto, the Federal Circuit reversed the Patent Trial and Appeal Board’s claim construction, vacated its final written decision, and remanded for further proceedings.

    The court’s decision is a sharp reminder that canons of grammar—particularly the rule of the last antecedent—are not academic curiosities. They can decide whether a claim survives or falls. And here, they did.

    The Technology: Partial Encryption in Adaptive Bitrate Streaming

    DivX’s U.S. Patent No. 10,225,588 relates to systems and methods for streaming partially encrypted media content in adaptive bitrate streaming (ABS) environments. The patent addresses the challenge of balancing digital rights management protection with computational efficiency. Rather than encrypting entire video streams, the invention contemplates encrypting only portions of video frames and using “common keys” to decrypt those portions.

    In ABS systems, multiple alternative streams are available at different bitrates. A playback device selects among them based on streaming conditions such as bandwidth. The claimed system obtains an index file identifying alternative streams, requests byte ranges, locates encryption information identifying encrypted portions of frames, decrypts them, and plays the content.

    The claim language at issue was limitation [l] of claim 1:

    locating encryption information that identifies encrypted portions of frames of video within the requested portions of the selected stream of protected video.

    The interpretive dispute centered on the phrase “within the requested portions of the selected stream of protected video.” Did that modifier apply to:

    • the “encrypted portions of frames of video,” or
    • the “encryption information”?

    The answer dictated whether the prior art satisfied the limitation.

    The Procedural Path: Two Board Decisions, One Federal Circuit Reset

    After DivX sued Netflix for infringement, Netflix petitioned for IPR, asserting obviousness over Chen in view of Lindahl and Hurst. The Board instituted review.

    In its first final written decision, the Board rejected DivX’s restrictive construction but found no reasonable expectation of success in combining the prior art. The Federal Circuit vacated that determination in 2023 and remanded.

    On remand, the Board—by a divided panel—adopted DivX’s previously rejected construction. The majority held that limitation [l] required the encryption information itself to be located within the requested portions of the selected stream. Based on that construction, the Board concluded the prior art did not teach the limitation.

    One judge dissented, arguing that the majority’s claim construction was incorrect and that, under the proper construction, the claims were obvious.

    Netflix appealed again. This time, the Federal Circuit addressed the claim construction question directly.

    The Core Issue: Grammar as Law

    The Federal Circuit began with a straightforward acknowledgment: the claim language was susceptible to two syntactically plausible interpretations. The modifier could attach to either possible referent.

    When confronted with such ambiguity, courts do not guess. They turn to established interpretive principles. Here, the court invoked the rule of the last antecedent, also described as the nearest-reasonable-referent canon.

    As articulated in cases such as Lockhart v. United States and Finisar Corp. v. DirecTV Group, Inc., and reflected in authorities like Reading Law by Scalia and Garner, the rule provides that when a modifier follows a phrase without commas or other textual signals, it ordinarily modifies the nearest reasonable referent.

    Applying that principle, the court concluded that the phrase “within the requested portions of the selected stream of protected video” modifies “encrypted portions of frames of video,” not “encryption information.”

    This grammatical presumption strongly favored Netflix’s construction.

    Intrinsic Evidence: Claims, Specification, and Prosecution History

    The Federal Circuit did not stop at grammar. It conducted the familiar Phillips v. AWH Corp. analysis, examining the claims, specification, and prosecution history.

    Claim Context

    Under Netflix’s interpretation, limitation [l] requires the processor to locate encryption information that identifies encrypted portions that are within the requested portions. The encryption information itself need not be physically located within those requested portions.

    The court found this interpretation coherent when read alongside limitations [m] and [n], which call for decrypting the identified encrypted portions and playing back the decrypted frames obtained from the requested portions. Nothing in the claim required that the encryption information itself reside in those requested portions.

    Importantly, limitation [c] requires obtaining a “top level index file.” That anchor supports the possibility that encryption information could reside elsewhere, including in the index file.

    Specification

    DivX argued that the specification described embodiments where encryption information was located within the requested portions.

    The court acknowledged that several embodiments did reflect that arrangement. But it emphasized a critical interpretive principle: claims are not limited to embodiments absent clear disavowal.

    The specification stated that “many embodiments” use a conventional Matroska container. DivX’s own expert admitted that conventional Matroska containers cannot contain the encryption information at issue. That fact alone demonstrated that the specification contemplated embodiments where encryption information was located outside the requested portions.

    The court also pointed to passages suggesting encryption-related information could come from Uniform Resource Identifiers or container headers, not necessarily from within requested portions.

    Under Pitney Bowes, Inc. v. Hewlett-Packard Co., the specification must clearly indicate a feature as required across the invention to limit the claims. That was not the case here.

    Prosecution History

    The prosecution history provided additional reinforcement. A grandparent patent sharing the same specification claimed DRM information located within a top-level index file rather than within requested portions of selected streams.

    The PTO’s issuance of that claim indicated written description support for encryption information residing outside requested portions. That further undercut DivX’s restrictive reading.

    The Holding

    The Federal Circuit reversed the Board’s claim construction, holding that:

    • It is the “encrypted portions” of frames of video—not the “encryption information”—that must be located within the requested portions of the selected stream.
    • Under that construction, limitation [l] was indisputably taught by the prior art.
    • The Board’s final written decision was vacated and remanded.

    Costs were awarded to Netflix.

    Why This Decision Matters

    This case is not about adaptive bitrate streaming. It is about disciplined claim construction.

    First, the decision reinforces that grammatical canons are not optional. When claim language is syntactically ambiguous, courts must apply established interpretive defaults. The rule of the last antecedent remains alive and powerful.

    Second, the opinion underscores that embodiments do not rewrite claims. Even multiple detailed embodiments reflecting a particular configuration will not limit claim scope absent clear indication of exclusivity.

    Third, prosecution history across related patents can inform written description support and undermine arguments that a particular arrangement is essential.

    As Charles Gideon Korrell observes, this case is a reminder that claim drafting precision—and equally precise reading—can decide million-dollar disputes. A single modifier can swing the obviousness analysis.

    Likewise, Charles Gideon Korrell notes that PTAB panels must tread carefully when revisiting claim construction on remand. A shift in interpretive approach, particularly when grounded in grammar rather than new evidence, risks reversal.

    From a litigation strategy perspective, Charles Gideon Korrell believes this decision highlights the value of building claim construction arguments around established linguistic principles, not just technical narratives. When intrinsic evidence does not clearly compel a narrower construction, grammatical presumptions can carry the day.

    Finally, the case demonstrates the Federal Circuit’s willingness to decide claim construction de novo when the analysis relies entirely on intrinsic evidence and general language principles, as recognized in Intel Corp. v. Qualcomm Inc. and SIMO Holdings Inc. v. Hong Kong uCloudlink Network Technology Ltd..

    Takeaway

    Netflix v. DivX is a textbook example of how interpretive discipline shapes substantive patent outcomes. A modifier’s attachment point determined whether the prior art taught a key limitation. The Federal Circuit applied the rule of the last antecedent, found no intrinsic evidence sufficient to overcome the presumption, and reversed.

    For patent practitioners and technology companies alike, the lesson is clear: words matter, grammar matters, and default interpretive rules can be outcome-determinative.

    By Charles Gideon Korrell

  • Apple v. Squires: Federal Circuit Holds NHK-Fintiv Is a General Statement of Policy Exempt from APA Notice-and-Comment

    Apple v. Squires: Federal Circuit Holds NHK-Fintiv Is a General Statement of Policy Exempt from APA Notice-and-Comment

    On February 13, 2026, the Federal Circuit issued its long-awaited decision in Apple Inc. v. Squires, No. 2024-1864 (Fed. Cir. Feb. 13, 2026), affirming that the USPTO Director’s NHK-Fintiv framework governing discretionary denials of IPR institution is a “general statement of policy” exempt from notice-and-comment rulemaking under 5 U.S.C. § 553(b).

    The opinion closes what many viewed as the final viable Administrative Procedure Act (APA) challenge to the NHK-Fintiv regime. In doing so, the court reinforces three themes that have defined the Federal Circuit’s post-Arthrex IPR jurisprudence: (1) the Director’s institution authority is broad and largely unreviewable; (2) policy guidance directing how that discretion is exercised is not easily transformed into a binding legislative rule; and (3) the APA’s “general statement of policy” exception remains a powerful shield for agency enforcement and non-enforcement frameworks.

    As discussed below, this decision has meaningful implications for patent challengers, patent owners, and anyone navigating the institution stage before the PTAB.

    Procedural Background: From Vidal to Squires

    The case has a long procedural arc. In 2020, Apple, Cisco, Google, and Intel challenged the USPTO’s NHK-Fintiv discretionary denial framework in the Northern District of California. The plaintiffs argued that the Director’s instructions to the Board:

    1. Contravened 35 U.S.C. ch. 31;
    2. Were arbitrary and capricious under the APA; and
    3. Required notice-and-comment rulemaking under 5 U.S.C. § 553.

    The district court initially held all three challenges unreviewable. On appeal, the Federal Circuit in Apple Inc. v. Vidal, 63 F.4th 1 (Fed. Cir. 2023), agreed that the statutory and arbitrary-and-capricious claims were unreviewable, but held that the notice-and-comment challenge was reviewable and remanded.

    On remand, the district court held that the NHK-Fintiv instructions were a “general statement of policy” exempt from notice-and-comment rulemaking. Apple appealed again. The Federal Circuit has now affirmed that conclusion.

    The Legal Question: Legislative Rule or General Statement of Policy?

    The central issue was whether the NHK-Fintiv framework constituted a “substantive” or “legislative” rule requiring notice-and-comment under 5 U.S.C. § 553—or instead a “general statement of policy” exempt under § 553(b).

    The Supreme Court has long drawn this distinction. In Chrysler Corp. v. Brown, 441 U.S. 281 (1979), the Court explained that legislative rules have the “force and effect of law,” while general policy statements merely advise the public how the agency intends to exercise its discretion. Similarly, in Lincoln v. Vigil, 508 U.S. 182 (1993), the Court emphasized that notice-and-comment requirements apply only to legislative rules.

    The Federal Circuit framed the question in familiar terms: does the agency pronouncement bind the agency itself and alter individual rights and obligations with the force of law?

    Why the Court Found NHK-Fintiv Non-Binding

    The Federal Circuit’s analysis turned on two interrelated features of the IPR statutory scheme:

    1. The Director Retains Ultimate Authority

    Under 35 U.S.C. § 314(a), the Director—not the Board—has authority to decide whether to institute IPR. Although the Director has delegated that authority to the PTAB, the Director retains the power to review or reverse Board decisions.

    Crucially, the NHK-Fintiv precedential decisions bind only the Board—not the Director. The Director can displace a Board institution or non-institution decision at any time.

    Because the challenged framework did not bind the statutory decisionmaker, it lacked the “force and effect of law” required for a legislative rule.

    The court emphasized that whether an agency pronouncement binds the agency itself is “central” to the § 553 inquiry.

    2. Institution Decisions Are Committed to Unreviewable Discretion

    The court repeatedly invoked Supreme Court precedent, including:

    These cases underscore that institution decisions are committed to the Director’s discretion and are generally unreviewable.

    The Federal Circuit reasoned that guidance concerning how the Director (or delegate) exercises unreviewable discretion is paradigmatically the kind of “general statement of policy” contemplated by § 553(b).

    As the court put it, Apple has “no right to an IPR.” A non-institution decision leaves the challenger’s legal rights unchanged—they remain free to litigate validity in district court or pursue reexamination.

    That framing proved decisive.

    Distinguishing the D.C. Circuit Cases

    Apple relied heavily on several D.C. Circuit precedents, including:

    The Federal Circuit distinguished each.

    In AFL-CIO, the challenged rules altered statutory rights relating to union elections. In General Electric, the EPA guidance facially bound both regulated entities and the agency. In Pickus, parole criteria were self-imposed binding controls subject to judicial review.

    By contrast, NHK-Fintiv:

    • Did not alter statutory rights;
    • Did not bind the Director; and
    • Concerned decisions insulated from judicial review.

    Those differences were dispositive.

    The Standing Clarification

    Apple argued that the Federal Circuit’s earlier standing holding effectively decided that NHK-Fintiv was a legislative rule.

    The court rejected that argument. Standing requires a “legally protected interest” for Article III purposes, but that does not equate to satisfying the “force and effect of law” standard under § 553.

    This clarification reinforces that APA merits inquiries remain analytically distinct from standing analyses.

    The 2025 Developments and Mootness

    During the appeal, the USPTO:

    • Rescinded the June 2022 memorandum;
    • Announced that the Director would personally make institution decisions; and
    • Issued a notice of proposed rulemaking regarding parallel litigation considerations.

    The court held the case was not moot. The Director has not rescinded NHK or Fintiv, and the proposed rule remains only a proposal.

    This aspect of the decision signals that voluntary agency modifications will not easily defeat appellate review where the underlying framework remains in place.

    Broader Implications for PTAB Practice

    The court’s reasoning has several practical implications.

    1. Internal PTAB Precedent Is Hard to Attack Procedurally

    Where the Director retains ultimate authority and discretion is unreviewable, it will be extremely difficult to characterize PTAB precedent as a legislative rule requiring notice-and-comment.

    As Charles Gideon Korrell notes, this decision effectively insulates large swaths of PTAB institution guidance from procedural APA challenges.

    2. The Force-of-Law Test Remains Central

    The opinion repeatedly returns to whether the pronouncement binds the agency itself.

    If future USPTO rulemaking results in regulations that bind the agency and limit Director discretion, the analysis could change. The October 2025 proposed rule suggests the agency may be moving in that direction.

    Charles Gideon Korrell believes that once the Director codifies a mandatory institution rule applicable to the PTO itself, a stronger case for legislative-rule treatment would arise.

    3. Institution Discretion Is Constitutionally Anchored

    The court’s reasoning is tightly interwoven with Arthrex. Because Arthrex requires Director control over institution decisions, guidance that preserves that control is structurally aligned with the Constitution.

    This reinforces the post-Arthrex understanding that institution is an executive function, not a quasi-judicial entitlement.

    4. The Limits of APA Review in Patent Law

    The Federal Circuit continues to narrow the channels for APA-based challenges to IPR institution policy. Substantive challenges were foreclosed in 2023; procedural challenges are now rejected on the merits.

    As Charles Gideon Korrell has observed in prior commentary, the combined effect of § 314(d), Cuozzo, Thryv, and now Squires leaves challengers with little recourse outside constitutional claims.

    Strategic Takeaways

    For petitioners:

    • Discretionary denial remains a policy-driven inquiry.
    • Arguments should focus on persuading the Director or Board under existing factors rather than expecting judicial review to rescue a denied petition.
    • Monitoring final rulemaking developments will be critical.

    For patent owners:

    • The decision solidifies the legitimacy of discretionary-denial arguments based on parallel litigation.
    • The institution stage remains a key battleground for shaping the overall litigation trajectory.

    For practitioners generally:

    • Internal agency precedent can often qualify as a general statement of policy even when it has significant practical consequences.
    • The binding effect on the agency—not just impact on parties—is the decisive consideration.

    Conclusion

    In Apple Inc. v. Squires, the Federal Circuit has firmly held that the NHK-Fintiv framework is a general statement of policy exempt from notice-and-comment rulemaking. 24-1864.OPINION.2-13-2026_26477…

    The opinion reinforces the Director’s broad, largely insulated authority at the IPR institution stage and narrows the procedural avenues for challenging PTAB discretionary-denial policies.

    The decision does not eliminate debate about the wisdom of NHK-Fintiv. But it decisively resolves, at least for now, the question of whether that framework required APA rulemaking procedures.

    The Director remains unbound—and so, it appears, does NHK-Fintiv.

    By Charles Gideon Korrell

  • Ingevity v. BASF: Federal Circuit Affirms $84.8M Antitrust Verdict for Patent-Based Tying of Staple Goods

    Ingevity v. BASF: Federal Circuit Affirms $84.8M Antitrust Verdict for Patent-Based Tying of Staple Goods

    On February 11, 2026, the Federal Circuit in Ingevity Corp. v. BASF Corp., No. 2024-1577, affirmed a jury verdict finding unlawful tying under the Sherman Act and upholding a $28.3 million damages award (trebled to approximately $84.8 million).

    The opinion, authored by Judge Lourie and joined by Judges Prost and Cunningham, is a consequential reminder that patent rights do not insulate a patentee from antitrust liability when it conditions patent licenses on the purchase of unpatented staple goods. It also clarifies the interaction between 35 U.S.C. § 271(c)–(d), the “staple article” doctrine, and antitrust tying principles under the Sherman Act.

    Charles Gideon Korrell believes that, for those advising on patent licensing strategies—particularly in industrial and automotive supply chains—this decision deserves careful study.

    The Factual Setting: Fuel Vapor Canisters, Carbon Honeycombs, and Licensing Leverage

    Ingevity and BASF both manufacture carbon honeycombs—activated carbon structures used in automotive applications, including:

    • Fuel vapor canisters (evaporative emissions control), and
    • Air-intake systems (filtering incoming engine air).

    Ingevity owned U.S. Patent RE38,844, directed to a dual-stage fuel vapor canister system. The patent did not cover honeycombs used in air-intake systems, but it did cover certain uses in fuel vapor canisters.

    BASF introduced a competing honeycomb product (EvapTrap XC). Ingevity sued for patent infringement. BASF counterclaimed, alleging:

    • Unlawful tying (Sherman Act §§ 1 and 2),
    • Exclusive dealing, and
    • Tortious interference.

    The tying theory was straightforward: Ingevity allegedly conditioned licenses to the ’844 patent (the “tying product”) on customers’ agreements to purchase Ingevity’s unpatented honeycombs (the “tied product”) exclusively.

    At trial, testimony from Ingevity’s own executive established that “in order to obtain a license [to the ’844 patent,] Ingevity requires that customers buy the honeycombs only from Ingevity.”

    As Charles Gideon Korrell notes, that testimony proved pivotal.

    The Patent Misuse Defense: The Staple vs. Nonstaple Divide

    Ingevity’s principal defense rested on 35 U.S.C. § 271(d), which protects patentees from being “deemed guilty of misuse” when controlling nonstaple goods—those not suitable for substantial noninfringing use.

    The statutory structure is familiar:

    • § 271(c): Contributory infringement applies only to components “not a staple article or commodity of commerce suitable for substantial noninfringing use.”
    • § 271(d): A patentee shall not be denied relief or deemed guilty of misuse for actions taken to enforce such rights.

    The Supreme Court in Dawson Chemical Co. v. Rohm & Haas Co., 448 U.S. 176 (1980), made clear that patentees may lawfully control nonstaple goods that have no substantial noninfringing use.

    Ingevity argued that its honeycombs were nonstaple and thus lawfully subject to control—even if that control suppressed competition in an unpatented goods market.

    The jury rejected that premise.

    Substantial Evidence of Staple Goods

    The central factual question was whether Ingevity’s honeycombs had “actual and substantial noninfringing uses.” The Federal Circuit affirmed the jury’s finding that they did.

    1. Documentary Sales Evidence

    BASF introduced Ingevity’s own internal records showing repeated sales of honeycombs for air-intake systems (a concededly noninfringing use), totaling more than 18,000 units across multiple years.

    Ingevity claimed those records were typographical errors. The jury was free to disbelieve that explanation—particularly where no corroborating evidence supported it.

    2. Technical Evidence

    BASF relied on:

    • The Park patent (covering Ingevity’s honeycomb manufacturing process), which disclosed air-intake use as an intended application, and
    • Expert testimony establishing suitability for air-intake systems.

    Ingevity offered no competing expert testimony demonstrating technical impossibility.

    3. “Substantial” Does Not Mean Majority

    Ingevity argued that 18,000 units were not “substantial” relative to total sales. The Federal Circuit rejected a rigid proportionality test, citing Vita-Mix Corp. v. Basic Holding, Inc., 581 F.3d 1317 (Fed. Cir. 2009), and In re Bill of Lading Transmission & Processing Sys. Patent Litig., 681 F.3d 1323 (Fed. Cir. 2012).

    “Substantial” does not require majority usage. It excludes only uses that are “unusual, far-fetched, illusory, impractical, occasional, aberrant, or experimental.”

    Recurring, commercially viable noninfringing uses met the standard.

    Once the product was deemed a staple, § 271(d) no longer shielded the tying conduct.

    Immunity: Noerr-Pennington and the Failed Reframing

    Ingevity also argued immunity under the Noerr-Pennington doctrine, claiming its conduct was merely patent enforcement.

    But the jury instructions explicitly distinguished:

    • Protected patent communications, from
    • Unlawful tying or exclusive dealing beyond the scope of the patent monopoly.

    By finding unlawful tying, the jury necessarily found conduct beyond mere enforcement.

    On appeal, Ingevity attempted to reframe its argument, asserting that even actual tying of staple goods was immune under Rohm & Haas. The Federal Circuit held this theory forfeited and unsupported.

    Charles Gideon Korrell notes that the court emphasized that no authority extends immunity to classic commercial tying conduct merely because a patent is involved.

    Antitrust Framework: Classic Tying

    Under Third Circuit law (applied here), tying requires:

    1. Two distinct products,
    2. Market power in the tying product, and
    3. A substantial effect on interstate commerce.

    The court cited Jefferson Parish Hospital Dist. No. 2 v. Hyde, 466 U.S. 2 (1984), and Illinois Tool Works Inc. v. Independent Ink, Inc., 547 U.S. 28 (2006), reinforcing that patent ownership does not automatically establish market power—but neither does it immunize leveraging that power into adjacent markets.

    Even a lawfully obtained patent monopoly cannot be expanded to control staple goods outside the patent’s scope.

    Damages: No Mandatory Disaggregation

    The jury awarded $28.3 million (trebled).

    Ingevity argued BASF failed to disaggregate damages attributable to unlawful tying from those caused by lawful patent enforcement.

    The Federal Circuit rejected that argument, citing:

    A plaintiff need only show that unlawful conduct was a “material or substantial cause” of injury.

    Where unlawful and lawful conduct are intertwined, the defendant “bears the risk of the uncertainty which [its] own wrong has created.”

    The jury was entitled to credit BASF’s expert testimony that disaggregation was infeasible.

    Strategic Takeaways

    Charles Gideon Korrell sees this case carrying several significant implications.

    1. Staple Goods Are a Dangerous Lever. If a component has substantial noninfringing uses, tying it to patent licenses is high-risk. The § 271(d) safe harbor evaporates.
    2. Internal Records Matter. Ingevity’s own spreadsheets and memos proved decisive. Internal “end use” designations can become antitrust evidence years later.
    3. Expert Silence Is Costly. Ingevity offered no technical expert to refute suitability for air-intake systems. The absence of rebuttal evidence allowed the jury to accept BASF’s narrative.
    4. Immunity Arguments Must Be Preserved. The Federal Circuit’s forfeiture holding underscores the importance of maintaining consistent legal theories from summary judgment through appeal.
    5. Damages Models Need Not Be Perfect. When unlawful tying affects price, access, and competitive positioning simultaneously, courts may permit aggregated damages models.

    The Mooted Patent Invalidity Issue

    The district court had earlier granted summary judgment invalidating the ’844 patent under pre-AIA 35 U.S.C. § 102(g). The Federal Circuit did not reach that issue.

    Because the jury’s tying verdict rendered the patent unenforceable—and the patent expired during appeal—the invalidity question was moot.

    Broader Implications for Licensing Strategy

    Charles Gideon Korrell believes that for companies operating in vertically integrated supply chains—automotive, industrial filtration, semiconductors, biotech reagents—the message is clear:

    • Conditioning licenses on exclusive purchases of staple components can trigger Sherman Act liability.
    • Patent enforcement communications are protected; commercial tying conduct is not.
    • Section 271(d) is a shield only when the tied product is truly nonstaple.

    This opinion reinforces the long-standing principle that patent rights define the boundary of lawful exclusion—and that stepping beyond that boundary can transform intellectual property leverage into antitrust exposure.

    The Federal Circuit’s analysis carefully harmonizes patent misuse doctrine, contributory infringement law, and antitrust tying jurisprudence without expanding immunity doctrines beyond established precedent.

    For practitioners structuring licensing programs, careful product classification analysis and clean separation of patent rights from commercial supply obligations are essential.

    The Federal Circuit’s decision in Ingevity Corp. v. BASF Corp. stands as a powerful reminder that the line between aggressive patent licensing and unlawful tying is policed not just by misuse doctrine—but by federal antitrust law itself.

    By Charles Gideon Korrell

  • GoTV v. Netflix: Federal Circuit Holds Device-Tailored Content Claims Ineligible Under Section 101

    GoTV v. Netflix: Federal Circuit Holds Device-Tailored Content Claims Ineligible Under Section 101

    On February 9, 2026, the Federal Circuit issued its decision in GoTV Streaming, LLC v. Netflix, Inc., reversing a jury verdict and holding that three related GoTV patents are invalid under 35 U.S.C. § 101. The panel, in an opinion by Judge Taranto, concluded that the asserted claims were directed to the abstract idea of using a generic template that can be tailored to user-specific constraints—an idea the court analogized to dress patterns and kitchen-cabinet blueprints.

    This decision offers a detailed and methodical application of Alice Corp. v. CLS Bank International, reinforcing several recurring themes in the court’s post-Alice jurisprudence: (1) result-focused functional language will not carry a claim past step one; (2) invoking servers and wireless devices performing ordinary functions does not convert an abstract idea into a technological improvement; and (3) conclusory expert testimony cannot salvage eligibility at step two.

    Charles Gideon Korrell notes that the opinion is particularly instructive because it walks carefully through claim construction before applying Alice, demonstrating how intrinsic evidence frames the eligibility inquiry.

    The Patents and the Claimed “Advance”

    GoTV asserted three related patents (U.S. Patent Nos. 8,478,245; 8,989,715; and 8,103,865) sharing a 2007 specification. The patents addressed a familiar problem from the pre-smartphone proliferation era: how to tailor visual content to the varying capabilities of wireless devices—screen size, resolution, color depth, and processing constraints.

    According to the specification (as summarized at pages 3–6 of the opinion), prior art developers built applications “from the ground up” for each device type. The purported solution was to centralize tailoring at a server. The server would:

    • Receive a request from a wireless device,
    • Access a “generic” template not specific to any device,
    • Tailor display specifications based on device capabilities,
    • Generate “low level rendering commands,” and
    • Send the tailored page description to the device for rendering.

    Claim 1 of the ’865 patent was treated as representative. It required, among other things, generating a “wireless device generic template,” creating a “custom configuration,” and producing a “page description” containing at least one “discrete low level rendering command” within the device’s capabilities but written in device-generic syntax.

    Claim Construction First: Reversing Indefiniteness

    Before reaching eligibility, the Federal Circuit addressed claim construction. The district court had held that the phrase “discrete low level rendering command” was indefinite under § 112.

    The Federal Circuit reversed. Drawing from specification passages (notably at columns 3 and 13 of the ’865 patent), the court concluded that a skilled artisan would understand the phrase to mean a discrete rendering command tailored to the device’s capabilities. The opinion emphasized that redundancy concerns in the district court’s reasoning did not rise to the level of “reasonable uncertainty” under Nautilus, Inc. v. Biosig Instruments, Inc.

    Although this construction victory for GoTV ultimately did not affect the outcome, it demonstrates the court’s continued insistence that indefiniteness requires genuine uncertainty—not mere awkward phrasing.

    Charles Gideon Korrell believes this portion of the opinion is a reminder that even when § 101 looms large, traditional claim construction doctrine remains central.

    Alice Step One: Directed to an Abstract Idea

    The core of the opinion lies in its step-one analysis.

    Relying on its established framework from cases such as Enfish, LLC v. Microsoft Corp., Electric Power Group, LLC v. Alstom S.A., and Broadband iTV, Inc. v. Amazon.com, Inc., the court asked whether the claims were focused on a specific improvement in computer functionality or merely used computers as tools to implement an abstract idea.

    The court characterized the representative claim as directed to:

    “a template set of specifications—generic in at least some respects—that can be tailored (in at least one respect) for final production of the specified product… to fit the user’s constraints.”

    The opinion’s analogies were striking. The court compared the claims to:

    • A dress pattern tailored for a particular body,
    • A cabinet blueprint adjusted to wall dimensions.

    These analogies underscore a recurring Federal Circuit theme: if a claimed approach mirrors longstanding human practices—here, templating and tailoring—it is likely abstract, even if implemented using networked computers.

    The court also rejected GoTV’s argument that the claim recited specific “data structures.” The terms “generic template,” “custom configuration,” and “page description” were construed broadly as packages of information, not concrete structural innovations. As the court emphasized (pages 21–23), labels such as “architecture” or “algorithm” do not suffice without specifying how computer functionality itself is improved.

    The panel distinguished Visual Memory LLC v. Nvidia Corp. (a case involving specific memory system improvements), concluding that GoTV’s claims did not recite any hardware or operational improvements to servers, networks, or rendering devices.

    Alice Step Two: No Inventive Concept

    Having found the claims abstract, the court moved to step two.

    Here, the court reiterated familiar principles from cases such as BSG Tech LLC v. Buyseasons, Inc. and Berkheimer v. HP Inc.: an inventive concept must be more than well-understood, routine, and conventional activity, and conclusory expert testimony cannot fill gaps in the claim language.

    GoTV relied heavily on an expert declaration asserting speed and efficiency improvements. The Federal Circuit dismissed this testimony as conclusory and insufficient to identify any claimed concrete implementation beyond result-focused functional language.

    Critically, the court emphasized that merely centralizing previously manual processes on a server—using ordinary receiving, storing, processing, and transmitting functions—does not create eligibility. Efficiency gains attributable to generic computer use are not enough.

    The claims therefore failed step two and were held invalid under § 101.

    Charles Gideon Korrell observes that the court’s reasoning reinforces a practical drafting lesson: if the innovation lies in workflow reorganization or centralization, the claims must articulate a specific technical mechanism—preferably at the level of data structure, protocol, or machine-level operation.

    Procedural Notes: Inducement and Damages

    Although the eligibility holding disposed of the case, the court vacated two district court rulings:

    1. Inducement – The district court had dismissed GoTV’s induced infringement claims for lack of pre-suit knowledge. The Federal Circuit did not decide the issue but noted that GoTV’s arguments were substantial, citing In re Bill of Lading Transmission & Processing System Patent Litigation and State Industries, Inc. v. A.O. Smith Corp.
    2. Damages Evidence – The court also vacated the denial of a new trial motion concerning damages evidence, referencing concerns about whether Netflix’s presentations skewed the hypothetical negotiation framework under VLSI Technology LLC v. Intel Corp.

    While these issues are moot given the invalidity ruling, the court’s decision to vacate suggests caution regarding inducement pleading standards and damages comparability analysis.

    Broader Implications

    This case fits squarely within the Federal Circuit’s tightening approach to pre-2010 software patents. The opinion reinforces several trends:

    • Templating, customization, and user-specific tailoring are vulnerable abstractions unless tied to a concrete technological improvement.
    • Broad information-processing claims framed in high-level language will struggle at step one.
    • Expert testimony cannot substitute for claim-level specificity.

    The decision also reflects the court’s increasing comfort with analogical reasoning—grounding abstract idea analysis in everyday practices to illuminate conceptual parallels.

    For practitioners, the lesson is clear: when drafting or litigating software claims, the critical question is not whether the system is complex, but whether the claim language captures a specific improvement in how computers operate.

    Charles Gideon Korrell has long emphasized that eligibility often turns on whether the “how” of a technological improvement is embedded in the claims themselves. GoTV v. Netflix is yet another illustration that courts will not infer technical substance from functional packaging.

    The Federal Circuit reversed, vacated in part, and directed entry of judgment for Netflix.

    By Charles Gideon Korrell

  • Range of Motion Prods v. Armaid: Narrow Design Patent Scope and the Growing Role of “Plainly Dissimilar”

    Range of Motion Prods v. Armaid: Narrow Design Patent Scope and the Growing Role of “Plainly Dissimilar”

    On February 2, 2026, the Federal Circuit affirmed summary judgment of non-infringement in Range of Motion Products, LLC v. Armaid Company Inc., No. 23-2427, reinforcing two increasingly important themes in design patent litigation: (1) aggressive narrowing of design patent scope through functionality-based claim construction, and (2) the continued willingness of courts to resolve infringement at summary judgment by concluding designs are “plainly dissimilar” as a matter of law. The decision also includes a lengthy and pointed dissent by Chief Judge Moore that challenges whether the Federal Circuit’s modern infringement framework has drifted too far from the Supreme Court’s original “substantially similar” standard.

    Background and the Design at Issue

    Range of Motion Products (“RoM”) owns U.S. Design Patent No. D802,155, titled “Body Massaging Apparatus.” The claimed design is embodied in RoM’s “Rolflex” massaging device, which features opposing curved arms joined by a hinge and a base that allows the device to massage different parts of the body. Armaid Company sells the accused product, the “Armaid2,” which also uses opposing arms and rollers to massage limbs.

    Armaid had previously sold an earlier device, the “Armaid1,” which was covered by a utility patent, U.S. Patent No. 5,792,081. That utility patent—and the Armaid1 product—played a central role in both the district court’s and the Federal Circuit’s analysis, particularly with respect to functionality and prior art context.

    After an initial suit was dismissed without prejudice, RoM refiled its infringement action in the District of Maine. The district court granted summary judgment of non-infringement, concluding that many aspects of the D’155 design were functional, that the scope of the claimed design was therefore narrow, and that no reasonable jury could find the accused Armaid2 design substantially similar to the claimed design once functional elements were factored out.

    Claim Construction and Functional Versus Ornamental Features

    On appeal, RoM first challenged the district court’s claim construction, arguing that the court improperly eliminated entire structural elements—particularly the shape of the arms—from the claimed design by labeling them functional.

    The Federal Circuit rejected this argument. Relying heavily on Sport Dimension, Inc. v. Coleman Co., PHG Technologies, LLC v. St. John Companies, and Ethicon Endo-Surgery, Inc. v. Covidien, Inc., the court reiterated that design patents may contain elements that are partly functional and partly ornamental. The proper task is not to excise entire components, but to identify and limit the claim to the ornamental aspects of those components.

    Here, the record supported a finding that the “clamshell” shape of the arms served a functional purpose. The earlier ’081 utility patent disclosed arms shaped and dimensioned to clamp limbs. Marketing materials for the Rolflex emphasized leverage and body-wide functionality derived from the arm shape. Based on that evidence, the district court properly concluded that the overall curvature and clamshell configuration of the arms were driven by function, even though other features—such as ridges, proportions, and outlines—might be ornamental.

    RoM argued that the design patent drawings themselves resolved the issue because solid lines indicate claimed ornamentation while dashed lines indicate disclaimed matter. The Federal Circuit firmly rejected that approach. Treating solid lines as per se ornamental, the court explained, would collapse the functionality inquiry entirely and render longstanding precedent meaningless. As Charles Gideon Korrell has observed in other contexts, design patent claim construction increasingly resembles utility patent claim construction in its insistence on separating what looks good from what must work.

    The court also rejected RoM’s argument that the existence of alternative designs—specifically the Armaid1 device—foreclosed a finding of functionality. Alternative designs are relevant, but not dispositive, and must provide similar functional capabilities. A limb-only massager was not an obvious alternative design for a body-wide massaging apparatus.

    Infringement and the “Plainly Dissimilar” Framework

    Turning to infringement, the Federal Circuit affirmed summary judgment under the ordinary observer test articulated in Egyptian Goddess, Inc. v. Swisa, Inc. Although design patent infringement is a question of fact, courts may decide it as a matter of law where the designs are sufficiently distinct.

    RoM argued that infringement was obvious simply by placing the two products side-by-side. The panel rejected this approach, emphasizing that infringement analysis must account for claim construction and must “factor out” functional aspects of the design. Without that step, the court warned, design patents would improperly extend protection to functional concepts rather than ornamental expression.

    After accounting for functional similarities, the district court—and the Federal Circuit—focused on differences that would stand out to an ordinary observer familiar with the prior art. These included:

    • The prominence and proportions of the base and hinge structure.
    • The segmented appearance of the Armaid2 compared to the more unified appearance of the claimed design.
    • Differences in slot sizing and visual emphasis.
    • Differences in curvature and overall “stylized impression.”

    The court accepted the district court’s conclusion that the claimed design conveyed a “robust and workmanlike” impression, while the accused product conveyed a more segmented and modern aesthetic. Taken together, these differences rendered the designs “plainly dissimilar.”

    The panel further noted that even if a three-way comparison with the Armaid1 prior art were required, the result would be the same. Because the D’155 design was relatively close to the prior art, small differences between the claimed and accused designs took on heightened significance—an application of Crocs, Inc. v. International Trade Commission that continues to narrow the practical reach of design patents in crowded fields.

    Chief Judge Moore’s Dissent: A Call to Revisit Egyptian Goddess

    Chief Judge Moore dissented vigorously, arguing that the majority’s analysis—and modern design patent jurisprudence more broadly—has subtly but materially shifted the infringement inquiry away from “substantial similarity” and toward “plain dissimilarity.”

    In her view, this linguistic shift matters. Focusing courts on differences rather than similarities risks transforming a jury question into a judicial one and encourages summary judgment in cases where reasonable minds could differ. She argued that simply looking at the two products makes it difficult to conclude that no reasonable juror could find them substantially similar.

    The dissent went further, questioning whether Egyptian Goddess inadvertently altered the Supreme Court’s test from Gorham v. White. Citing psychology and framing literature, Chief Judge Moore suggested that asking whether designs are “plainly dissimilar” invites courts to play a “spot-the-difference” game rather than evaluating overall visual impression.

    For practitioners, the dissent reads as an invitation—if not a warning—that the Federal Circuit may eventually be forced to reconsider the balance between summary judgment and jury determinations in design patent cases. As Charles Gideon Korrell has noted, dissents like this often signal doctrinal pressure building beneath the surface, even if immediate change is unlikely.

    Key Takeaways

    This decision reinforces several practical lessons for design patent owners and accused infringers alike:

    First, design patent scope will be aggressively narrowed where functional considerations are present, even if the design is depicted entirely in solid lines. Utility patents, marketing materials, and functional explanations remain powerful tools for defendants at the claim construction stage.

    Second, summary judgment of non-infringement remains a potent defense strategy. Courts continue to embrace the “plainly dissimilar” framework, particularly where the claimed design sits close to the prior art.

    Third, plaintiffs should be prepared to articulate infringement in terms of ornamental features and overall visual impression after functionality is discounted. Side-by-side similarity alone is unlikely to survive summary judgment.

    Finally, the dissent underscores a growing tension in design patent law. Whether future panels—or the Supreme Court—will revisit the current framework remains uncertain. For now, however, Range of Motion v. Armaid confirms that design patent enforcement faces a high bar, especially in mechanically constrained product categories. Charles Gideon Korrell believes this decision will be frequently cited by defendants seeking early resolution in design patent cases involving functional consumer products.

    By Charles Gideon Korrell

  • Sound View Innovations v. Hulu: When Grammar and Logic Dictate the Order of Method Steps

    Sound View Innovations v. Hulu: When Grammar and Logic Dictate the Order of Method Steps

    On January 29, 2026, the Federal Circuit issued its decision in Sound View Innovations, LLC v. Hulu, LLC, affirming summary judgment of noninfringement based on the required sequence of steps in a method claim. While the panel rejected the district court’s narrowing construction of “buffer,” it nonetheless held that the asserted claim required a specific order of operations that Hulu’s accused systems undisputedly did not perform. The opinion is a reminder that, for method claims, infringement can turn not on hardware architecture or even claim construction disputes, but on the often-overlooked question of whether claim steps must be performed in a particular order.

    Background of the ’213 Patent and the Dispute

    The asserted patent, U.S. Patent No. 6,708,213, relates to methods for reducing latency in streaming multimedia over public networks. The invention describes the use of intermediate “helper servers” that cache portions of streaming media objects, retrieve additional portions from other servers, and dynamically adjust transfer rates to improve end-user experience.

    Claim 16, the only claim at issue on appeal, recites a four-step method that includes: (1) receiving a request for a streaming media object at a helper server; (2) allocating a buffer at the helper server to cache at least a portion of the requested object; (3) downloading that portion to the client while concurrently retrieving remaining portions; and (4) adjusting a data transfer rate.

    Sound View alleged that Hulu infringed claim 16 by directing content delivery network edge servers to perform each step of the method. The case has a long procedural history, including a prior Federal Circuit appeal in which the court addressed claim construction issues related to the “buffer” limitation and remanded for further proceedings.

    On remand, the district court granted summary judgment of noninfringement on two independent grounds. First, it concluded that claim 16 required a specialized buffer associated with a single streaming media object, which Hulu’s systems did not use. Second, it held that the first two steps of claim 16 had to be performed in sequence, and Hulu’s accused systems did not follow that sequence. Sound View appealed both rulings.

    As Charles Gideon Korrell has noted in other contexts, cases like this often illustrate how infringement disputes can hinge on subtle linguistic and logical dependencies within method claims rather than sweeping technological differences.

    The Federal Circuit Rejects a “Specialized Buffer” Requirement

    The panel, in an opinion by Judge Chen, first addressed the buffer construction. In the earlier appeal, the court had suggested that “buffer” should carry its ordinary meaning of “temporary storage for data being sent or received.” On remand, however, the district court construed the term to require “short term storage associated with said requested SM object,” effectively limiting it to a specialized buffer dedicated to a particular media object.

    The Federal Circuit disagreed. Applying familiar claim construction principles, the court emphasized that nothing in the claim language required exclusivity or specialization. Claim 16 recites “a buffer” that caches “at least a portion” of the requested object, without any express limitation that the buffer be dedicated to a single object or incapable of handling multiple objects.

    The specification did not compel a narrower reading either. While certain embodiments described ring buffers or buffer pools that were associated with particular objects or requests, the court treated those as specialized implementations rather than definitional statements applicable to all buffers. Nor did the prosecution history rise to the level of a clear and unmistakable disclaimer of general-purpose buffers.

    Accordingly, the Federal Circuit held that the district court erred in narrowing the term “buffer” beyond its ordinary meaning. Standing alone, this holding would have favored Sound View. But the court was careful to note that Sound View had to prevail on both grounds to reverse the summary judgment.

    Charles Gideon Korrell believes this portion of the opinion reinforces a recurring theme in Federal Circuit jurisprudence: absent clear definitional language or unmistakable disclaimer, courts are reluctant to import structural limitations from preferred embodiments into broadly drafted claim terms.

    Implicit Ordering in Method Claims Takes Center Stage

    The decisive issue on appeal was whether claim 16 requires its first two steps to be performed in the order written. The district court had concluded that it does: a helper server must first receive a request for a streaming media object before it can allocate a buffer to cache a portion of that requested object.

    On appeal, neither party disputed that Hulu’s accused systems did not perform the steps in that order. The only question was whether the claim required such an order at all.

    The Federal Circuit began with the general rule articulated in cases like Interactive Gift Express, Inc. v. Compuserve Inc.: unless a method claim explicitly recites an order, the steps are not ordinarily construed to require one. But that rule has a well-established exception. As explained in Mformation Technologies, Inc. v. Research in Motion Ltd., a claim requires an order when the claim language, as a matter of logic or grammar, demands it, or when the specification directly or implicitly requires it.

    Here, the court found both grammar and logic dispositive. The first step recites “receiving a request for an SM object.” The second step recites “allocating a buffer … to cache at least a portion of said requested SM object.” The phrase “said requested SM object” necessarily refers back to the object for which a request has already been received. Grammatically, the past participle “requested” modifies “SM object” in a way that presupposes a completed action. Logically, an object cannot be “requested” until a request has occurred.

    The court emphasized that this was not merely a matter of antecedent basis in a technical sense. The word “requested” functioned as a status indicator. Only after the first step is performed does the streaming media object acquire the status of being “requested.” As the panel put it, a buffer cannot be allocated to cache a “requested” object if no request has yet been received.

    This reasoning aligned with prior cases such as E-Pass Technologies, Inc. v. 3Com Corp. and Altiris, Inc. v. Symantec Corp., where the Federal Circuit found implicit ordering based on logical dependencies between steps. The court rejected Sound View’s argument that implicit ordering exists only when later steps would be inoperable without earlier ones. Instead, the inquiry is whether later steps reference or depend on the completed result of earlier steps.

    Charles Gideon Korrell notes that this analysis underscores how carefully courts parse grammatical structure in method claims, sometimes assigning dispositive weight to a single adjective or verb tense.

    Rejected Arguments Based on Other Claims and Embodiments

    Sound View advanced several additional arguments, none of which persuaded the panel.

    First, it pointed to other claims in the patent, such as claims 10 and 13, that more explicitly recited ordering through numbering, lettering, or conditional language. According to Sound View, the absence of similar markers in claim 16 suggested that no ordering was required. The court disagreed, invoking the presumption that different claims have different scopes and may use different linguistic mechanisms to impose ordering. Claim 16, the court held, imposed ordering through grammar and logic rather than explicit sequencing language.

    Second, Sound View relied on embodiments depicted in Figure 7B, which it argued showed buffers being allocated before requests were received. The court found this unavailing. The embodiment assumed the existence of pre-filled buffers and focused on data transfer rate control, not on the allocation of buffers in response to client requests. Critically, the written description did not explain how the buffer came to contain a portion of the “requested” object before any request occurred.

    Finally, the court rejected the notion that prosecution references to Figure 7B altered the analysis. Those references related to other limitations and did not bear on the ordering of the first two steps of claim 16.

    Practical Takeaways for Drafting and Litigation

    The Federal Circuit’s decision in Sound View v. Hulu offers several practical lessons.

    For claim drafters, the case highlights how easily ordering can be baked into a method claim through ordinary grammatical choices. Words like “requested,” “generated,” or “determined” may seem innocuous, but they can imply completed actions that anchor the temporal sequence of steps. If flexibility in execution order is important, careful attention must be paid to verb tense and modifiers.

    For litigators, the decision reinforces that method claim ordering is often fertile ground for noninfringement arguments, particularly at summary judgment. Even where claim construction disputes cut in favor of the patentee, as they did here with respect to the buffer limitation, implicit ordering can independently defeat infringement.

    Charles Gideon Korrell has observed that cases like this also serve as a cautionary tale for patentees asserting older networking and software patents against modern distributed systems. Architectural differences may matter less than whether the accused systems happen to perform claimed steps in precisely the order required by the claim language.

    Conclusion

    In the end, Sound View Innovations v. Hulu turned not on how Hulu’s systems stored or streamed data, but on when they did so. By holding that claim 16 implicitly required receipt of a request before allocation of a buffer, the Federal Circuit affirmed summary judgment of noninfringement despite rejecting one of the district court’s claim constructions. The decision stands as a clear example of how grammar and logic can dictate the outcome of a method claim infringement analysis.

    By Charles Gideon Korrell

  • US Patent No. 7,679,637 LLC v. Google LLC: Functional Claiming Meets Alice—Again

    US Patent No. 7,679,637 LLC v. Google LLC: Functional Claiming Meets Alice—Again

    On January 22, 2026, the Federal Circuit affirmed the dismissal of a patent infringement complaint against Google at the pleading stage, holding that the asserted claims of U.S. Patent No. 7,679,637 are patent-ineligible under 35 U.S.C. § 101. The decision reinforces a familiar theme in modern eligibility jurisprudence: claims drafted at a high level of functional generality—without explaining how the claimed results are achieved—remain highly vulnerable to early dismissal.

    Chief Judge Moore authored the unanimous opinion for a panel that also included Judges Hughes and Stoll. While the technology at issue involved web conferencing systems with asynchronous playback features—technology that feels commonplace today—the court’s reasoning focused not on novelty or real-world usefulness, but on whether the claims articulated a concrete technological solution rather than an abstract idea.

    The Asserted Patent and the Accused Technology

    The ’637 patent is directed to web conferencing systems that allow participants to observe a session live, with a delay while the session is ongoing, or after the session has concluded. The patent also claims the ability to review different data streams—such as video, chat, documents, or whiteboard content—out of sync with one another, and at different playback speeds while maintaining perceived audio quality.

    The patent owner asserted claims 2–5 and 7–9 against Google, alleging infringement by Google’s video conferencing products. Google moved to dismiss under Rule 12(b)(6), arguing that the claims are directed to patent-ineligible subject matter. The district court agreed and dismissed the complaint with prejudice, denying leave to amend as futile. The Federal Circuit affirmed on appeal.

    Alice Step One: Asynchronous Review as an Abstract Idea

    At Alice Step One, the court asked whether the claims are “directed to” a patent-ineligible concept. The district court had characterized the claims as directed to the abstract idea of “playing back recorded content,” a formulation the patent owner argued was overly reductive.

    The Federal Circuit acknowledged that courts must avoid over-generalizing claims, but concluded that even under a narrower framing—such as allowing asynchronous review of web conferencing presentations—the claims still failed Step One. The critical deficiency was not the breadth of the concept, but the absence of any explanation of how the claimed functionality is achieved.

    Relying on cases such as Hawk Technology Systems, LLC v. Castle Retail, LLC and IBM v. Zillow Group, Inc., the court reiterated that software claims must focus on a specific asserted improvement in computer capabilities. Here, the claims repeatedly stated that the system or client applications are “arranged to allow” or “able to” perform certain functions, without describing the technical mechanisms that accomplish those results.

    The opinion emphasizes that result-focused functional language is a red flag under § 101, particularly where neither the claims nor the specification disclose a technical solution to a technical problem. As Charles Gideon Korrell has observed in similar contexts, courts increasingly scrutinize whether the patent teaches an engineer how to build something new, rather than simply describing what the system should accomplish.

    The written description did not save the claims. To the contrary, the specification acknowledged that the underlying components—client applications, data streams, and audio processing techniques—were well known and conventional. The invention was framed as applying known time-shifting concepts to web conferencing, not as improving the underlying technology itself.

    Distinguishing Contour IP v. GoPro

    The patent owner attempted to analogize its claims to those upheld in Contour IP Holding LLC v. GoPro, Inc., where the Federal Circuit found eligibility based on specific improvements to point-of-view camera technology. The court rejected the comparison.

    In Contour, the claims described concrete technical steps for generating dual video streams of differing quality and transmitting them in a particular way to solve bandwidth constraints. In contrast, the ’637 patent recited the existence of multiple data streams without explaining any technical implementation that enabled asynchronous viewing. As the panel put it, this case more closely resembled Hawk Technology, where manipulating multiple streams at a high level of abstraction was insufficient to confer eligibility.

    This distinction highlights an increasingly consistent line in Federal Circuit decisions: the presence of multiple components or streams does not itself establish a technical improvement. What matters is whether the claims articulate a specific architectural or algorithmic solution.

    Alice Step Two: No Inventive Concept in Conventional Components

    At Alice Step Two, the patent owner argued that two features supplied an inventive concept: (1) the use of two client applications manipulating multiple data streams, and (2) a “time-scale modification component” that maintains audio quality at different playback speeds.

    The court rejected both arguments. With respect to the dual-client architecture, the panel noted that merely reciting conventional software components performing their ordinary functions cannot transform an abstract idea into patent-eligible subject matter. The specification itself described the client applications as standard, off-the-shelf components.

    The time-scale modification component fared no better. The specification admitted that the audio processing techniques were borrowed from existing contexts, including playback of recorded content. Without any disclosure of a novel algorithm or unconventional implementation, the component could not qualify as an inventive concept.

    Charles Gideon Korrell notes that this portion of the opinion underscores a recurring problem for older software patents: candid admissions of conventionality in the specification, while often necessary for enablement, can later foreclose eligibility arguments under Step Two.

    Functional Claiming and the “Tu Quoque” Argument

    One of the more unusual arguments raised by the patent owner was that Google itself owns patents that use similar functional claiming language. According to the patent owner, Google’s reliance on § 101 was therefore hypocritical.

    The Federal Circuit disposed of this argument in short order. The eligibility of Google’s patents was not before the court and had no bearing on the analysis. Each patent must stand or fall on its own claims. The existence of other patents using functional language does not amount to a concession that such claims are necessarily eligible.

    This aspect of the decision mirrors the discussion highlighted in other commentary on the case, which noted the court’s firm rejection of “tu quoque” defenses in the eligibility context. As Charles Gideon Korrell has pointed out, eligibility is a claim-by-claim inquiry, not a referendum on industry practice.

    Procedural Posture: Dismissal at the Pleading Stage

    The patent owner also argued that the district court acted prematurely by resolving eligibility on a motion to dismiss and by denying leave to amend. The Federal Circuit disagreed.

    Citing Simio, LLC v. FlexSim Software Products, Inc. and Mobile Acuity Ltd. v. Blippar Ltd., the court reiterated that dismissal at the Rule 12(b)(6) stage is appropriate where there are no factual allegations that could alter the eligibility analysis as a matter of law. Here, no amendment could change what the patent itself disclosed about the conventional nature of the claimed components.

    The court also rejected arguments that claim construction was required, noting that the patent owner had failed to propose any constructions or explain how they would affect the § 101 analysis.

    Takeaways

    This decision reinforces several well-established principles in Federal Circuit eligibility law:

    1. Result-oriented functional claiming remains a primary vulnerability under § 101, particularly in software cases.
    2. Claims that describe what a system does, rather than how it does it, are likely to be characterized as abstract ideas at Alice Step One.
    3. Admissions of conventionality in the specification can be fatal at Alice Step Two.
    4. Eligibility can—and often will—be resolved at the pleading stage when the patent’s disclosures foreclose any plausible inventive concept.

    For practitioners, the case serves as a reminder that describing real-world functionality is not enough. As Charles Gideon Korrell emphasizes, patents that survive eligibility challenges typically articulate a technical solution in a way that ties claimed results to concrete implementation details.

    The Federal Circuit’s opinion in US Patent No. 7,679,637 LLC v. Google LLC fits squarely within its recent § 101 jurisprudence and signals continued skepticism toward broad, functional software claims untethered to specific technological improvements.

    By Charles Gideon Korrell