Tag: patent litigation
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Constellation Designs v. LG: Federal Circuit Draws Section 101 Line Between Optimization Claims and Specific Signal Constellations
The Federal Circuit’s decision in Constellation Designs, LLC v. LG Electronics Inc., No. 24-1822 (Fed. Cir. Aug. 31, 2026), draws an unusually clear line under 35 U.S.C. § 101 between claiming a technological objective and claiming a particular technological implementation. The court held claims broadly covering signal constellations “optimized” for improved capacity patent ineligible, while…
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AML IP v. Bath & Body Works Direct: Federal Circuit Allows Section 101 Dismissal After Finding Patent Venue Improper
The Federal Circuit’s decision in AML IP, LLC v. Bath & Body Works Direct, Inc., Case No. 2025-1280 (Fed. Cir. Aug. 28, 2026), holds that a district court may, in appropriate circumstances, decide a fully briefed merits defense even after concluding that patent venue is improper. Because venue is a waivable protection belonging to the…
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T-Mobile US v. KAIFI: Patent Settlement Dispute Falls Outside Federal Circuit Jurisdiction
The Federal Circuit’s precedential decision in T-Mobile US, Inc. v. KAIFI LLC, Case No. 2025-1006 (Fed. Cir. Aug. 28, 2026), draws an important boundary between patent litigation and commercial disputes involving patents. A state-law contract claim does not fall within the Federal Circuit’s exclusive appellate jurisdiction merely because one party’s preferred interpretation would require deciding questions of prosecution…
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Socket Solutions v. Import Global: Federal Circuit Demands Doctrinal Discipline Before Granting Preliminary Patent Injunctions
The Federal Circuit’s decision in Socket Solutions, LLC v. Import Global, LLC, Case No. 2025-1121 (Fed. Cir. Aug. 4, 2026), illustrates that preliminary patent injunctions do not alter the governing standards of claim construction or equitable relief. Because a preliminary injunction can remove products from the marketplace long before infringement has been finally adjudicated, courts…
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Ridge Corp. v. Kirk NationaLease: Federal Circuit Rejects Preliminary Injunction Based on Claim Construction and Speculative Harm
The Federal Circuit’s decision in Ridge Corp. v. Kirk NationaLease Co., Case No. 25-1254 (Fed. Cir. July 13, 2026), reverses a preliminary injunction against competing manufacturers of roll-up truck doors, holding that substantial questions of noninfringement and an inadequately supported claim of irreparable harm prevented the patent owner and its licensee from obtaining extraordinary pretrial…
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Otsuka v. Hetero Labs: Federal Circuit Upholds Patent Injunction but Requires Rule 65(c) Bond
The Federal Circuit’s decision in Otsuka America Pharmaceutical, Inc. v. Hetero Labs Limited, Case No. 2025-2016 (Fed. Cir. July 1, 2026), upheld a preliminary injunction delaying the launch of a generic version of Nuedexta but vacated the district court’s decision allowing the patent owner to obtain that injunction without posting security under Federal Rule of…
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Enanta v. Pfizer: Federal Circuit Rejects Provisional Priority Based on an Alleged Typographical Error
The Federal Circuit’s decision in Enanta Pharmaceuticals, Inc. v. Pfizer Inc., Case No. 2025-1427 (Fed. Cir. June 23, 2026), holds that a later patent cannot claim the filing date of a provisional application when the provisional expressly discloses a different chemical range, even if the applicant contends that the difference resulted from a typographical error.…
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Ironburg v. Valve: Federal Circuit Clarifies How Parties Must Prove IPR Estoppel Under §315(e)
The Federal Circuit’s decision in Ironburg Inventions Ltd. v. Valve Corp., Case No. 2024-2088 (Fed. Cir. June 18, 2026), limits when a patent owner may use inter partes review estoppel to prevent an accused infringer from asserting prior-art invalidity grounds in district court. The court held that a reference is not necessarily discoverable merely because…
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Columbia University v. Gen Digital: $185M Cybersecurity Patent Verdict Reopened and Trial Counsel Sanctions Vacated
A pair of related decisions issued by the Federal Circuit in Trustees of Columbia University v. Gen Digital Inc. , Nos. 24-1243, -1244 (Fed. Cir. Mar 11, 2026), address two issues that often arise together in complex patent litigation: the evolving scope of patent eligibility under Alice, and the limits of sanctions imposed on litigation…
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Barry v. DePuy Synthes: Federal Circuit Limits Daubert Exclusion of Patent Experts
On January 20, 2026, the Federal Circuit issued a significant decision clarifying the boundary between judicial gatekeeping under Daubert and the jury’s role as factfinder in patent infringement trials. In Barry v. DePuy Synthes Companies, the court reversed the exclusion of two key experts and vacated a judgment as a matter of law entered after…