Actelion & Nippon Shinyaku v. Alembic: Consent Judgment & Permanent Injunction on Selexipag Patent
Actelion Pharmaceuticals and Nippon Shinyaku filed suit against Alembic in Delaware District Court over US7205302B2, covering selexipag tablets marketed as Uptravi. The case resolved in 92 days with a court-entered consent judgment and permanent injunction barring Alembic's generic ANDA products until at least October 31, 2026.
Permanent injunction locks out Alembic's generic selexipag until 2026
On April 4, 2023, Actelion Pharmaceuticals US, Inc., Actelion Pharmaceuticals Ltd., and Nippon Shinyaku Co., Ltd. filed an infringement action in the District of Delaware against Alembic Pharmaceuticals Limited and Alembic Pharmaceuticals, Inc., asserting U.S. Patent No. 7,205,302 (the "'302 Patent"). The patent covers heterocyclic compound derivatives, specifically selexipag — the active ingredient in Uptravi tablets used in the treatment of pulmonary arterial hypertension. The suit was triggered by Alembic's Abbreviated New Drug Application (ANDA No. 214414) seeking approval for generic selexipag tablets in six dosage strengths ranging from 0.2 mg to 1.6 mg.
The case closed on July 5, 2023, just 92 days after filing, via a consent judgment and order of permanent injunction entered by Judge Gregory B. Williams. Under the consent judgment, Alembic acknowledged the '302 Patent as valid and enforceable, and agreed to be permanently enjoined from making, using, selling, offering to sell, or importing its ANDA products in the United States until after the later of October 31, 2026, or the last day of any pediatric exclusivity period that may attach to the '302 Patent. The complaint and all remaining claims and counterclaims were dismissed without prejudice and without costs to any party. The recorded basis of termination is Injunction Granted; the docket order is styled as a consent judgment with a stipulated dismissal without prejudice of residual claims.
The 92-day resolution suggests the parties reached agreement shortly after service, which is consistent with the negotiated posture common in Hatch-Waxman ANDA litigation where generic entry timelines are often managed commercially rather than adjudicated. The consent judgment preserves the court's jurisdiction to enforce the injunction. The specific commercial terms underlying the parties' agreement — beyond those stated in the public court order — are not disclosed in the available record.
See Complete Case & Patent Analysis →Filing to Injunction Granted in 92 days
Case resolved in 92 days — well under the median ANDA patent litigation timeline
US7205302B2 — Selexipag heterocyclic compound derivative (Uptravi)
Any generic pharmaceutical manufacturer, API supplier, or specialty pharma company active in the pulmonary arterial hypertension space who is considering selexipag formulations, structurally related heterocyclic compound derivatives, or competing ANDA submissions should conduct a freedom-to-operate analysis against US7205302B2. The patent has been actively enforced and a defendant has acknowledged its validity in a binding court order — the commercial risk profile is materially higher than for an unenforced or contested compound patent.
Official order — verbatim text
The consent judgment order records Alembic's express acknowledgment that US7205302B2 is valid and enforceable, and imposes a permanent injunction through at least October 31, 2026, with a pediatric exclusivity extension clause. Residual claims are dismissed without prejudice. The recorded basis of termination is Injunction Granted; the order itself is styled as a consent judgment, with a stipulated without-prejudice dismissal of remaining claims. The specific terms negotiated between the parties beyond the four corners of the public order are not disclosed in the available record.
Consent judgment: what the agreed resolution means for both parties
A court-entered judgment binding on all parties
A consent judgment is a binding, court-entered judgment on terms agreed by the parties — it carries the full force of a judicial order, not merely a private settlement. Here, Judge Williams entered both a judgment and a permanent injunction. The court expressly retained jurisdiction to enforce or supervise performance, meaning any breach by Alembic can be addressed as a contempt or enforcement proceeding in the same court without re-filing.
Permanent injunction enteredUptravi exclusivity protected through at least October 2026
Actelion and Nippon Shinyaku secured court-entered protection for Uptravi without going to trial. Alembic expressly acknowledged the '302 Patent as valid and enforceable, which strengthens the patent's litigation posture against other ANDA filers. The injunction extends through the later of October 31, 2026, or the end of any applicable pediatric exclusivity period, providing a defined exclusivity runway for the branded product.
Validity acknowledged by defendantAlembic enjoined from U.S. market entry until at least Oct 2026
Alembic is barred from commercialising its ANDA products in the U.S. for all six dosage strengths until the injunction period expires. Residual claims and counterclaims were dismissed without prejudice, which preserves certain legal positions for the future. No costs or attorney fees were awarded against Alembic. The specific commercial terms, if any, underlying the parties' agreement to the consent judgment are not disclosed in the available record.
Market entry delayed to 2026+ANDA challengers face a validated, court-acknowledged compound patent
Alembic's acknowledgment of validity and enforceability of the '302 Patent in a court-entered judgment is a commercially significant data point for other generic manufacturers tracking the selexipag ANDA landscape. It raises the risk profile for any competing ANDA filer targeting the same compound patent before the injunction period expires. Companies monitoring the Uptravi generic entry window should track both the October 2026 date and any pediatric exclusivity extension that may apply.
Heightened risk for competing ANDA filersFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Actelion Pharmaceuticals US, Inc. | Company | /Search in Eureka ↗ |
| Co-Plaintiff | Nippon Shinyaku Co., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | Actelion Pharmaceuticals, Ltd. | Company | Search in Eureka ↗ |
| Defendant | Alembic | Individual | /Search in Eureka ↗ |
| Co-Defendant | Alembic Pharmaceuticals, Inc. | Company | Search in Eureka ↗ |
| Plaintiff counsel | Andrew Colin Mayo | Attorney | Counsel for Actelion Pharmaceuticals US, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Steven J. Balick | Attorney | Counsel for Actelion Pharmaceuticals US, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Ashby & Geddes PC | Law Firm | Representing Actelion Pharmaceuticals US, Inc.Search in Eureka ↗ |
| Defendant counsel | Anne Shea Gaza | Attorney | Counsel for AlembicSearch in Eureka ↗ |
| Defendant law firm | Young Conaway Stargatt & Taylor, LLP | Law Firm | Representing AlembicSearch in Eureka ↗ |
| Presiding judge | Judge Gregory B. Williams | Judge | Delaware District CourtSearch in Eureka ↗ |
R&D signals in the selexipag and PAH compound patent space
Forward-looking patent and R&D intelligence for teams tracking Actelion, Nippon Shinyaku, and the selexipag/PAH therapeutic landscape.
Actelion & Nippon Shinyaku's selexipag patent filing activity
Beyond the '302 compound patent, Actelion and Nippon Shinyaku are likely to hold continuation, formulation, and method-of-use patents around selexipag. Mapping their full portfolio in the heterocyclic compound and prostacyclin receptor agonist space can reveal the depth of the IP thicket protecting Uptravi and identify where generic or next-generation compound development may find freedom.
Selexipag patent family depthFiling trends in prostacyclin receptor agonists for PAH
Pulmonary arterial hypertension is a competitive therapeutic area with active patent filings across prostacyclin pathway agonists. Tracking filing trends around IP2 receptor agonists and selexipag-adjacent heterocyclic compounds can reveal which companies are building competing compound positions and where the next wave of ANDA or NDA challenges to incumbent PAH therapies may emerge.
PAH filing trends 2020–2025Alembic's generic pharmaceutical patent landscape
Alembic Pharmaceuticals has an active ANDA filing programme across multiple therapeutic areas. Analysing their patent filings and ANDA history in cardiovascular and respiratory drug spaces can signal where they are building generic entry positions next — and which branded compound patents may face ANDA challenges in upcoming litigation cycles.
Alembic ANDA pipeline signalsAdjacent PAH compound derivatives beyond selexipag's claim scope
The '302 Patent's compound-level coverage of selexipag creates a defined exclusion zone, but the broader heterocyclic compound derivative space may contain structurally distinct PAH-active compounds outside current claim scope. R&D teams exploring next-generation IP2 receptor agonists or alternative PAH mechanisms should map claim boundaries against candidate structures to identify credible white space for novel compound filings.
PAH compound white spaceSimilar ANDA patent infringement cases involving selexipag and PAH drugs
Explore comparable Hatch-Waxman ANDA infringement cases in Delaware District Court involving compound patents in the pulmonary arterial hypertension and cardiovascular pharmaceutical space.
Related patent case — similar technology
Comparable case in the same technology domain. Patent holder and defendant reached resolution after proceedings.
SettledRelated infringement action — same court
Comparable Heterocyclic compound derivatives and medicines-adjacent infringement action. Patent enforcement dynamics analysed in depth.
Active · District CourtRelated invalidity challenge — appellate outcome
Combined invalidity and infringement action in the same technology space. Decided after substantive proceedings.
DecidedActelion Pharmaceuticals US, Inc.'s broader IP enforcement history
Actelion Pharmaceuticals US, Inc.'s full litigation history covering prior enforcement, licensing activity, and inter partes review proceedings.
Portfolio viewWhat this case signals for the selexipag and PAH drug patent landscape
A rapid 92-day consent judgment with a defendant's validity acknowledgment sends a clear signal to the generic selexipag field.
Defendant's validity concession raises the bar for all ANDA challengers
When a generic filer concedes validity and enforceability in a court-entered consent judgment, it creates a reference point that other ANDA applicants and their counsel must account for. Any competitor targeting US7205302B2 before October 2026 should expect a well-fortified patent position backed by this precedent of rapid, successful enforcement.
Pediatric exclusivity tail is a live variable for generic entry timing
The injunction runs until the later of October 31, 2026, or the last day of any pediatric exclusivity tied to the '302 Patent. Companies modelling generic entry timelines for selexipag must track FDA's pediatric exclusivity determinations — the consent judgment does not cap Alembic's exclusion at 2026 if exclusivity extends further.
Nippon Shinyaku's co-plaintiff status signals active co-enforcement strategy
Nippon Shinyaku's inclusion as a co-plaintiff alongside Actelion suggests a coordinated, multi-party enforcement posture on the selexipag compound patent. Monitoring Nippon Shinyaku's broader ANDA litigation filings in parallel may reveal the full scope of the '302 Patent enforcement campaign across multiple generic applicants.
Without-prejudice dismissal preserves litigation optionality post-2026
Residual claims and counterclaims were dismissed without prejudice, meaning Alembic retains the ability to revisit certain positions after the injunction expires. Plaintiffs similarly preserve enforcement options. Product teams and legal counsel should model scenarios where litigation re-emerges around the 2026 expiry window, particularly if pediatric exclusivity status changes.
Actelion v Alembic — key questions answered
The case resolved via a consent judgment and permanent injunction entered by Judge Gregory B. Williams on July 5, 2023. Alembic acknowledged US7205302B2 as valid and enforceable and was enjoined from commercialising its generic selexipag ANDA products in the U.S. until at least October 31, 2026, or the end of any applicable pediatric exclusivity period. Residual claims were dismissed without prejudice and without costs to any party.
The asserted patent is U.S. Patent No. 7,205,302 (US7205302B2, application no. US10/476196), which covers heterocyclic compound derivatives — specifically the selexipag compound, the active ingredient in Uptravi tablets used for pulmonary arterial hypertension. Alembic's ANDA No. 214414 sought approval for generic selexipag tablets in dosage strengths of 0.2 mg, 0.4 mg, 0.6 mg, 0.8 mg, 1.4 mg, and 1.6 mg.
Under the consent judgment, Alembic and its affiliates are permanently enjoined from making, using, selling, offering to sell, or importing its ANDA products in the U.S. until after the later of October 31, 2026, or the last day of any pediatric exclusivity associated with the '302 Patent. The specific commercial terms, if any, beyond those stated in the court order are not disclosed in the available record.
The consent judgment records Alembic's agreement that the '302 Patent is valid and enforceable. The order does not contain an express admission of infringement on the face of the publicly available verdict text. The specific terms agreed between the parties beyond the four corners of the consent judgment are not disclosed in the available record.
Nippon Shinyaku Co., Ltd. is listed as a co-plaintiff alongside Actelion Pharmaceuticals US, Inc. and Actelion Pharmaceuticals Ltd. The case record does not disclose the precise basis for their joint standing — for example, whether Nippon Shinyaku holds a co-ownership or exclusive licence interest in US7205302B2. The specific nature of their IP relationship with respect to the asserted patent is not detailed in the available public record.
Monitor selexipag patent enforcement and ANDA entry risk
Track new ANDA filings and litigation against US7205302B2 before the October 2026 injunction window opens. PatSnap Eureka surfaces enforcement activity, patent family depth, and competitor ANDA pipeline signals in real time.
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