The Federal Circuit’s recent decision in A.L.M. Holding Company v. Zydex Industries Private Ltd., Case No. 25-1317 (Fed. Cir. May 19, 2026), provides important clarification regarding constitutional standing in patent infringement suits where a patent owner has granted broad exclusive rights to a licensee but retained certain enforcement and economic interests.
The opinion addresses a recurring issue in modern patent licensing structures: when does a patent owner retain enough rights to sue after entering into an exclusive license agreement? The Federal Circuit’s answer reinforces a distinction that district courts have sometimes blurred in recent years: Article III standing is not the same thing as statutory standing under 35 U.S.C. § 281.
For patent owners, licensors, litigation funders, and companies structuring exclusive technology licenses, the case offers a roadmap for preserving enforceable rights while still granting substantial commercial authority to a licensee.
The decision also continues the Federal Circuit’s recent effort to clean up years of confusion in standing doctrine following cases such as Morrow v. Microsoft, Lone Star Silicon Innovations v. Nanya, and Intellectual Tech LLC v. Zebra Technologies.
The License Structure at Issue
The patents involved related to warm-mix asphalt paving technologies (U.S. Patent Nos. 7,815,725;
7,981,466; 9,394,652; 10,214,646; 8,734,581; and 9,175,446). A.L.M. Holding Company and Ergon Asphalt jointly owned the asserted patents and entered into an agreement granting Ingevity Corporation an “exclusive,” worldwide, royalty-bearing license to commercialize products under the patents.
The agreement granted Ingevity broad commercial rights, including the right to manufacture, use, sell, and sublicense products practicing the patents. But the patent owners retained several important rights:
- the right to sue infringers;
- shared control over infringement litigation;
- veto authority over sublicenses;
- ongoing royalty interests;
- patent prosecution control;
- termination rights for material breach; and
- limited retained practice rights.
When A.L.M. and Ergon later sued Zydex for infringement, the district court dismissed the case for lack of Article III standing, concluding that the retained rights were insufficiently “exclusionary.”
The Federal Circuit reversed.
The Court Reemphasizes the Difference Between Constitutional and Statutory Standing
One of the most significant aspects of the opinion is its careful separation of constitutional standing from statutory standing.
The Federal Circuit explained that Article III standing concerns whether the plaintiff has suffered a constitutionally cognizable injury-in-fact. By contrast, statutory standing under § 281 asks whether the plaintiff qualifies as a “patentee” entitled to sue.
That distinction matters because statutory defects are often curable through joinder, while constitutional standing defects are jurisdictional and fatal if absent at the outset.
The court acknowledged that prior Federal Circuit decisions had sometimes “melded” these inquiries together, creating confusion for district courts attempting to evaluate standing in complicated licensing arrangements.
Charles Gideon Korrell notes that this portion of the opinion may become one of its most cited sections because district courts frequently collapse the “all substantial rights” analysis into the Article III inquiry without adequately distinguishing the separate legal questions involved.
The panel emphasized that a patent owner can retain constitutional standing even if it transferred away enough rights that it might no longer independently satisfy the “all substantial rights” test for statutory standing.
That clarification alone likely narrows a line of increasingly aggressive standing challenges that defendants have used in patent cases involving complex licensing structures.
Why the Retained Rights Were Enough
The Federal Circuit ultimately concluded that the licensors retained a sufficient “exclusionary right” to establish Article III standing.
The court focused on three interconnected retained rights:
- the retained right to sue;
- veto authority over sublicenses; and
- continuing royalty interests.
The sublicensing veto proved particularly important. Ingevity could not freely sublicense the patents without the patent owners’ consent, and any sublicense remained subject to royalty obligations flowing back to the patent owners.
That structure prevented the licensee from unilaterally extinguishing the patent owners’ enforcement rights through royalty-free sublicenses to accused infringers.
The Federal Circuit characterized this as preserving a genuine exclusionary interest rather than a merely theoretical or “illusory” right.
The court repeatedly returned to the idea that the retained enforcement rights had real economic and practical substance. Because infringement deprived the patent owners of royalties and because the licensors maintained meaningful control over sublicensing and enforcement, they retained a concrete stake sufficient for constitutional standing.
The Court’s Reliance on Alfred E. Mann
The opinion heavily relies on Alfred E. Mann Foundation for Scientific Research v. Cochlear Corp., a case often associated with statutory standing rather than constitutional standing.
That reliance is important.
The district court had treated Mann as largely irrelevant because it involved the “all substantial rights” doctrine under § 281. The Federal Circuit rejected that approach and explained that factual analyses underlying statutory standing cases may still inform the constitutional inquiry.
Specifically, the panel emphasized Mann’s discussion regarding whether a retained right to sue is “illusory.”
Under Mann, a patent owner’s retained enforcement rights are not illusory where:
- the licensee cannot freely sublicense accused infringers;
- royalty interests remain protected; and
- the patent owner maintains meaningful enforcement participation.
Those same features existed here.
Charles Gideon Korrell believes the opinion significantly strengthens the continuing vitality of Mann in modern standing disputes, particularly in cases involving sophisticated licensing arrangements common in the pharmaceutical, semiconductor, and industrial technology sectors.
Distinguishing Morrow v. Microsoft
The panel also carefully distinguished Morrow v. Microsoft, which defendants frequently cite in standing disputes.
In Morrow, the plaintiff possessed only a bare contractual right to sue, divorced from ownership and stripped of meaningful exclusionary interests.
That was not the situation here.
Unlike the plaintiff in Morrow, A.L.M. and Ergon:
- still owned the patents;
- retained royalty interests;
- maintained control over sublicensing;
- preserved litigation participation rights; and
- could prevent royalty-free sublicenses to accused infringers.
The Federal Circuit emphasized that Morrow involved a “bare right to sue,” whereas the patent owners here retained multiple interlocking economic and enforcement interests tied directly to the patents themselves.
That distinction may prove highly consequential in future standing challenges.
Broader Implications for Patent Licensing
The decision provides practical drafting guidance for licensors who want to preserve standing after granting broad exclusive rights.
Several retained rights appear especially significant after this opinion:
- retained approval authority over sublicenses;
- continuing royalty participation;
- meaningful enforcement participation rights;
- retained ability to initiate litigation; and
- restrictions preventing royalty-free sublicensing.
The court repeatedly suggested that these provisions collectively preserved a real exclusionary interest rather than a merely symbolic one.
By contrast, the opinion implies that standing risks increase when:
- the licensee can freely sublicense accused infringers;
- the patent owner lacks royalty participation;
- enforcement authority is entirely transferred; or
- the retained rights exist only nominally.
Charles Gideon Korrell notes that many older license agreements were drafted primarily around the “all substantial rights” framework without carefully considering the separate constitutional standing inquiry. This decision may prompt companies to revisit existing agreements, particularly where litigation is anticipated.
The Decision’s Impact on Litigation Strategy
The opinion may also affect litigation tactics.
Over the last decade, accused infringers increasingly used standing challenges as an early procedural weapon, particularly after Lone Star and Lexmark reshaped portions of the standing analysis.
Some defendants pushed for highly restrictive interpretations of constitutional standing, especially where patent ownership structures involved layered licenses, enforcement entities, or field-of-use arrangements.
This decision pushes back against that trend.
The Federal Circuit rejected an overly rigid approach that would have required patent owners to retain near-complete control in order to satisfy Article III. Instead, the court reaffirmed that the constitutional inquiry focuses on whether the plaintiff retains a concrete exclusionary interest, not whether it retained every commercially significant patent right.
That distinction is likely to matter in:
- technology transfer agreements;
- university licensing structures;
- private equity-backed patent monetization programs;
- cross-licensing arrangements;
- joint venture commercialization models; and
- field-restricted exclusive licenses.
The opinion may be especially important in industries where commercialization and enforcement responsibilities are intentionally separated between operating companies and patent-holding entities.
A Continuing Cleanup of Federal Circuit Standing Doctrine
Viewed more broadly, the case represents another step in the Federal Circuit’s continuing effort to rationalize patent standing doctrine after years of doctrinal overlap.
The court openly acknowledged that its own precedents contributed to confusion by “melding” constitutional and statutory analyses together.
This opinion attempts to restore analytical discipline by:
- distinguishing Article III injury from § 281 entitlement;
- clarifying that factual overlap does not collapse the doctrines;
- reaffirming the importance of retained exclusionary rights; and
- rejecting bright-line rules based solely on exclusive licensing status.
For patent litigators, the opinion will likely become a frequently cited authority in future standing disputes involving exclusive licenses.
For transactional lawyers, it offers a useful blueprint for preserving enforcement flexibility without undermining commercial exclusivity.
And for district courts, the decision provides clearer direction on how to analyze retained patent rights without conflating constitutional standing with statutory standing doctrine.
