Allergan & AbbVie v. Amneal: LUMIGAN® 0.01% Patent Battle Ends in Consent Injunction
Allergan and AbbVie filed suit in the Eastern District of New York against Amneal Pharmaceuticals asserting 12 patents covering bimatoprost ophthalmic solution 0.01% (LUMIGAN®) in response to Amneal’s ANDA 217289. After 759 days, the case closed via a stipulated consent order — blocking Amneal from the U.S. market for the life of the ‘504 Patent.
12-Patent ANDA Battle Over LUMIGAN® Ends in Permanent Market Block
Allergan and AbbVie, Inc. filed suit on August 17, 2023 in the U.S. District Court for the Eastern District of New York against Amneal Pharmaceuticals, Inc., Amneal Pharmaceuticals Private Limited, and Amneal EU, Limited. The complaint asserted 12 U.S. patents covering bimatoprost ophthalmic solution 0.01% — marketed as LUMIGAN® — in direct response to Amneal’s filing of ANDA 217289 seeking FDA approval to market a generic version of the product before patent expiry.
The case resolved on September 11, 2025 via a stipulated consent order entered by the court three days before the formal closure date. The order established that Amneal’s ANDA filing constituted an act of infringement of the ‘504 Patent (US7851504B2) under 35 U.S.C. § 271(e)(2)(A). Amneal is permanently enjoined from manufacturing, using, selling, or importing the ANDA 217289 product in the United States for the life of the ‘504 Patent, including any extensions and pediatric exclusivities — absent a license from Allergan or AbbVie.
At 759 days, the case ran longer than many ANDA matters that settle early, suggesting substantive litigation activity before the parties reached agreement. The stipulation preserves Amneal’s right to challenge the ‘504 Patent in future actions involving different products, and all remaining claims and counterclaims were dismissed without prejudice — leaving the door open to future disputes. The financial terms of any underlying commercial arrangement are not disclosed in the public record.
Filing to Dismissed without Prejudice in 759 days
759 days — above the median ANDA litigation duration before resolution
Consent injunction entered: what the stipulated order means for both parties
ANDA filing deemed infringement under § 271(e)(2)(A)
Under 35 U.S.C. § 271(e)(2)(A), the mere act of filing an ANDA seeking approval to market a patented drug before patent expiry constitutes a defined act of infringement. Here, the stipulated order explicitly adjudicates that Amneal’s filing of ANDA 217289 infringed the ‘504 Patent. This is a negotiated concession — Amneal accepted infringement liability on that patent in exchange for resolution of all remaining claims without prejudice.
§ 271(e)(2)(A) ANDA infringementAllergan and AbbVie secure market exclusivity for LUMIGAN® 0.01%
Allergan and AbbVie secured a permanent injunction blocking Amneal’s ANDA 217289 product from the U.S. market for the full life of the ‘504 Patent, including extensions and pediatric exclusivities. This effectively preserves LUMIGAN® 0.01% market exclusivity against this particular generic entry. The without-prejudice dismissal of other claims means plaintiffs retain the right to assert remaining patents if Amneal pursues a different generic product or modified ANDA.
Permanent injunction grantedAmneal blocked from ANDA 217289 product — but future challenges preserved
Amneal is enjoined from commercializing its ANDA 217289 bimatoprost 0.01% product in the United States for the patent term. However, the stipulation was carefully structured: all other claims and defenses are dismissed without prejudice, and the order explicitly preserves Amneal’s right to challenge the ‘504 Patent in future actions involving different products. Amneal and both plaintiffs expressly waived any right to appeal this order.
Market entry blocked; appeal waived12-patent fortress signals durable protection for branded ophthalmic drugs
The layering of 12 patents across a single ophthalmic formulation — spanning composition, method, and formulation claims — illustrates the depth of IP protection major pharma companies build around blockbuster ophthalmology products. Generic entrants face compounding litigation risk when each ANDA triggers potential infringement across multiple patent families. The consent injunction outcome, without any disclosed royalty or settlement payment, suggests Amneal calculated the litigation risk as not worth pursuing to trial.
Ophthalmic patent fortress strategyFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Allergan | Individual | Pharmaceutical patent holder — holder of US7851504B2 and 11 further bimatoprost patentsSearch in Eureka ↗ |
| Co-Plaintiff | AbbVie, Inc. | Company | Search in Eureka ↗ |
| Defendant | Amneal Pharmaceuticals, Inc. | Company | Generic pharmaceutical manufacturer that filed ANDA 217289 for bimatoprost ophthalmic solution 0.01%Search in Eureka ↗ |
| Co-Defendant | Amneal Pharmaceuticals Private Limited | Individual | Search in Eureka ↗ |
| Co-Defendant | Amneal EU, Limited | Individual | Search in Eureka ↗ |
| Plaintiff counsel | Alan Mark Vinegrad | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Brianne Bharkhda Sullivan | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Christopher N. Sipes | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Douglas Behrens | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Erica Nicole Andersen | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Jia Hui Jiang | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Justin Warren Burnam | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Kevin Patrick Mulry | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Michael N. Kennedy | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff counsel | Tobias Ma | Attorney | Counsel for AllerganSearch in Eureka ↗ |
| Plaintiff law firm | Covington & Burling LLP | Law Firm | Representing AllerganSearch in Eureka ↗ |
| Plaintiff law firm | Covington & Burling LLP, Washington DC | Law Firm | Representing AllerganSearch in Eureka ↗ |
| Defendant counsel | Ben Witte | Attorney | Counsel for Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant counsel | Giancarlo Scaccia | Attorney | Counsel for Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant counsel | Jonathan Richard Wise | Attorney | Counsel for Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant counsel | Julie P. Bookbinder | Attorney | Counsel for Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant counsel | Kathryn Albanese | Attorney | Counsel for Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant counsel | Mark Lesko | Attorney | Counsel for Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant counsel | Richard Pettus | Attorney | Counsel for Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant counsel | Scott Joseph Bornstein | Attorney | Counsel for Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant law firm | Greenberg Traurig PA | Law Firm | Representing Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Defendant law firm | LaPinta Lesko | Law Firm | Representing Amneal Pharmaceuticals, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | New York Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The stipulated order is notable for its precision: it adjudicates infringement of the ‘504 Patent (US7851504B2) only, while dismissing all remaining claims without prejudice. This structure protects both parties — Allergan and AbbVie secure an enforceable injunction, while Amneal avoids a broader merits judgment on the other 11 patents. The explicit waiver of appeal rights by both sides signals a fully negotiated resolution with no remaining litigation exposure under the current ANDA. The court retains jurisdiction solely for enforcement purposes.
US7851504B2 — Bimatoprost ophthalmic solution, the ‘504 Patent anchor
US7851504B2 — the ‘504 Patent — covers bimatoprost, a prostaglandin analogue used in LUMIGAN® 0.01% ophthalmic solution for reduction of intraocular pressure in glaucoma and ocular hypertension. The patent, filed via application US11/083261, is the anchor of a 12-patent portfolio that collectively protects formulation, composition, and method-of-use aspects of the product. The breadth of the portfolio — spanning application filings from the early 2010s — reflects a layered exclusivity strategy designed to extend effective market protection well beyond any single patent’s expiry.
LUMIGAN® 0.01% is a commercially significant ophthalmology product for Allergan and AbbVie, competing in the crowded but high-value glaucoma treatment segment. The 12-patent portfolio surrounding this single drug product is consistent with innovator pharma strategy of building overlapping IP coverage across formulation variants, concentrations, and delivery methods. Generic challengers must navigate all layers simultaneously, and the adjudicated infringement of the ‘504 Patent — the foundational composition patent — in this consent order signals the central importance of that patent to the portfolio’s defensive value.
Should you run an FTO against US7851504B2 and the LUMIGAN® patent portfolio?
Any company developing a bimatoprost ophthalmic solution, prostaglandin analogue eye drop, or formulation targeting intraocular pressure reduction should treat this 12-patent portfolio as a primary FTO priority. The consent order confirms that ANDA 217289 — a product aimed directly at LUMIGAN® 0.01% — was found to infringe the ‘504 Patent. Formulation scientists and regulatory teams should assess not just the ‘504 Patent but all 12 asserted patents before committing to ANDA filing or product development timelines.
PatSnap Eureka’s FTO Search Agent allows R&D and IP teams to map claim scope across all 12 asserted patents simultaneously, identify design-around opportunities, and flag pediatric exclusivity extensions that affect market entry windows. With the ‘504 Patent injunction extending through all extensions and exclusivities, understanding the precise expiry landscape is commercially critical for any generic or biosimilar entrant targeting this product segment.
Run a freedom-to-operate analysis on US8299118B2 to assess your product’s exposure
Run FTO in Eureka →Similar ANDA Patent Cases: Ophthalmic Drug Formulation Disputes
Explore comparable ANDA infringement actions in ophthalmic pharmaceutical formulations litigated in U.S. district courts, including multi-patent consent orders and injunctions.
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 LUMIGAN® 0.01%-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.
DecidedAllergan’s broader IP enforcement history
Allergan’s full litigation history covering prior enforcement, licensing activity, and inter partes review proceedings.
Portfolio viewWhat this case signals for the ophthalmic pharmaceutical IP landscape
This consent injunction reinforces how multi-patent portfolios deter generic market entry in high-value ophthalmology drug segments.
Multi-patent ANDA stacking creates compounding litigation risk for generics
Asserting 12 patents against a single ANDA forces generic challengers to invalidate or design around every family simultaneously. Even if a challenger is confident on some patents, the cost and risk of full litigation across a 12-patent portfolio often tips the commercial calculus toward settlement — as this case suggests.
Without-prejudice dismissal preserves future enforcement optionality for plaintiffs
By dismissing all non-‘504 claims without prejudice, Allergan and AbbVie retained the ability to assert the remaining 11 patents if Amneal modifies its formulation or files a new ANDA. This is a standard strategic preservation move in ANDA litigation — innovators avoid giving up IP coverage they may need later.
Pediatric exclusivity extensions extend the effective injunction window beyond base patent term
The consent order specifically extends the injunction through any pediatric exclusivities on the ‘504 Patent, suggesting Allergan or AbbVie may hold or anticipate a pediatric exclusivity grant. This can add six months beyond the patent expiry date — a commercially significant extension that generic entrants must model into their market timing strategy.
Eastern District of New York is an increasingly active venue for ANDA patent battles
This case joins a growing docket of pharmaceutical ANDA disputes filed in E.D.N.Y., driven in part by where generic manufacturers are incorporated or operate. IP teams tracking branded ophthalmology or specialty pharma patents should monitor E.D.N.Y. consent orders as leading indicators of settlement norms in multi-patent ANDA cases.
Allergan v Amneal — key questions answered
The case was resolved by a stipulated consent order entered September 11, 2025. Amneal’s filing of ANDA 217289 was adjudicated as infringement of US7851504B2 (the ‘504 Patent). Amneal was permanently enjoined from marketing its generic bimatoprost 0.01% product in the U.S. for the life of the ‘504 Patent. All other claims were dismissed without prejudice.
Allergan and AbbVie asserted 12 U.S. patents, including US7851504B2, US8299118B2, US8772338B2, US9155716B2, US8933127B2, US8278353B2, US8524777B2, US8586630B2, US8933120B2, US9241918B2, US8309605B2, and US8338479B2. Only US7851504B2 (the ‘504 Patent) was adjudicated in the consent order; remaining patent claims were dismissed without prejudice.
Dismissal without prejudice means Allergan and AbbVie can reassert those 11 patents in future litigation against Amneal if Amneal files a new or modified ANDA or pursues a different product. The patents are not extinguished and no validity or non-infringement determination was made — the public record is silent on the merits of those claims.
No. The consent order expressly states that both Plaintiffs and Amneal waived any right to appeal or otherwise move for relief from the stipulation and order. This makes the injunction final and non-appealable by either party as between them in relation to ANDA 217289.
The injunction is limited to the specific product described by ANDA 217289 — generic bimatoprost ophthalmic solution 0.01%. The consent order explicitly states it is without prejudice to any claims, defenses, or counterclaims in any possible future action involving Amneal and the ‘504 Patent regarding a product other than the ANDA 217289 product. Future products would require separate litigation.
Track bimatoprost patent risk before your next ANDA filing
The 12-patent LUMIGAN® portfolio remains a live enforcement threat for any generic entrant. Use PatSnap Eureka to run FTO searches, monitor patent expiries including pediatric exclusivity windows, and track new ANDA-related litigation in this drug class.
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