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Amgen v. Accord BioPharma: Denosumab Biosimilar Patent Litigation | PatSnap
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Case ID1:25-cv-01305
FiledFeb 2025
ClosedJul 2025
Patent Litigation

Amgen v. Accord BioPharma: Denosumab Biosimilar Consent Judgment in 148 Days

Amgen filed suit in the District of New Jersey against Accord BioPharma asserting 34 patents covering its denosumab antibody, Prolia® and XGEVA® formulations, and manufacturing methods. The parties reached a confidential settlement resolving the case in 148 days, with a court-entered injunction blocking Accord’s biosimilar launch until at least October 1, 2025.

Resolution time
148days
148-day resolution — notably swift for a 34-patent BPCIA biologics case
Patents asserted
33
US7364736B2 and 33 further denosumab antibody, composition, and manufacturing patents asserted
Outcome
Consent Judgment
Settled with prejudice; injunction entered by consent; October 2025 expiry
Cost ruling
Each Party Bears
Court ordered each party to bear its own costs under the consent judgment
Published by PatSnap Insights Team · Verified by PatSnap Eureka Data
Case overview

Amgen locks in biosimilar injunction via rapid denosumab settlement

On February 18, 2025, Amgen, Inc. and Amgen Manufacturing Limited filed suit in the U.S. District Court for the District of New Jersey against Accord BioPharma, Inc., Accord Healthcare, Inc., and Intas Pharmaceuticals, Ltd., asserting 34 patents covering denosumab — the active ingredient in Prolia® and XGEVA®. The action arose from Accord’s filing of a Biologics License Application (BLA) seeking FDA approval of Accord’s denosumab biosimilar products, triggering the patent dance mechanism under the BPCIA.

The case closed on July 16, 2025, via a consent judgment and injunction entered by the court. Under the agreed terms, the asserted patents were declared valid, enforceable, and infringed by Accord’s biosimilar products. Accord and its affiliates were enjoined from commercialising their biosimilar in the United States, with that injunction running until October 1, 2025. Remaining claims and counterclaims were dismissed with prejudice, and each party bore its own costs. The confidential settlement agreement, executed July 9, 2025, governs the parties’ commercial arrangement beyond the public record.

A 148-day resolution is notably compressed for a case involving 34 asserted patents across a major BPCIA biosimilar dispute — the breadth of Amgen’s portfolio likely exerted significant settlement pressure on Accord. The injunction’s specific October 1, 2025 expiry date suggests the parties negotiated a defined launch window as part of their confidential commercial terms, consistent with biosimilar settlement patterns in which a licensed entry date is agreed privately. The full economic terms — including any royalty or revenue-sharing arrangement — remain undisclosed.

Case at a glance
Case no.1:25-cv-01305
PlaintiffAmgen, Inc.
CourtNew Jersey
JudgeN/A
FiledFebruary 18, 2025
ClosedJuly 16, 2025
Duration148 days
OutcomeConsent Judgment
Verdict causeInfringement Action
BasisConsent Judgment
Prior Art Intelligence
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Case data sourced from PACER / New Jersey District Court via PatSnap Eureka Litigation Intelligence Explore similar cases ↗
Case timeline

Filing to Consent Judgment in 148 days

148-day resolution — notably swift for a 34-patent BPCIA biologics case

Case timeline: Complaint filed FEB 18 2025, MAY–JUN — 148 days total Horizontal timeline showing the three key events in Amgen, Inc. v Accord BioPharma, Inc. from filing to resolution. Source: PACER, New Jersey District Court. FEB 18 2025 Complaint filed Pre-trial proceedings JUL 16 2025 Consent Judgment 148 DAYS TOTAL
Settlement terms

Consent judgment entered: what the agreed injunction means for both parties

Legal mechanism

Consent judgment locks in validity and infringement findings

A consent judgment is a court order entered with the agreement of both parties. Here, the court formally adjudged all 34 asserted patents valid, enforceable, and infringed — creating a judicial record that is more durable than a private settlement alone. Accord waived findings of fact and conclusions of law under Rule 65, and the court retained jurisdiction to enforce the injunction and the underlying confidential agreement.

Dismissed with prejudice
Patent holder outcome

Amgen secures injunction and preserves its 34-patent denosumab wall

Amgen obtained a court-entered injunction blocking Accord’s biosimilar from the U.S. market, with all 34 patents formally adjudged valid and infringed. The consent judgment strengthens Amgen’s negotiating position in parallel BPCIA disputes against other denosumab biosimilar filers. The confidential agreement likely grants Accord a licensed entry date — effectively monetising the portfolio while maintaining market exclusivity until at least October 2025.

Injunction until Oct 2025
Challenger outcome

Accord accepts infringement findings in exchange for defined market entry

By consenting to a judgment of validity and infringement, Accord forecloses future invalidity challenges to these 34 patents in this district on the same products, consistent with a dismissal with prejudice. In exchange, the October 1, 2025 injunction expiry — and the confidential agreement behind it — strongly suggests Accord secured a negotiated U.S. launch date. The cost-neutral order avoids further litigation expense for both sides.

Agreed launch window likely
Commercial implications

Settlement pattern signals Amgen’s portfolio dominance in denosumab biosimilars

The rapid resolution of a 34-patent BPCIA case within 148 days is consistent with Amgen using its deep denosumab patent estate to negotiate settlements that delay and license biosimilar entry on favourable terms. Other denosumab BLA filers facing the same MDL (1:25-md-03138) should note the breadth of the asserted portfolio and the willingness to accept consent-based validity findings as a template for settlement leverage across the biosimilar competitive landscape.

MDL No. 1:25-md-03138
Legal analysis based on PACER docket records for case 1:25-cv-01305 and PatSnap Eureka litigation intelligence Search PatSnap Eureka ↗
Parties and representation

Full party and counsel information

RoleNameTypeDetail
PlaintiffAmgen, Inc.CompanyBiopharmaceutical innovator — holder of 34 denosumab antibody and formulation patentsSearch in Eureka ↗
DefendantAccord BioPharma, Inc.CompanyBiosimilar developer seeking FDA approval of denosumab products via BLA filingSearch in Eureka ↗
Plaintiff counselJessica K. FormichellaAttorneyCounsel for Amgen, Inc.Search in Eureka ↗
Plaintiff counselLiza M. WalshAttorneyCounsel for Amgen, Inc.Search in Eureka ↗
Plaintiff counselMarc D. HaefnerAttorneyCounsel for Amgen, Inc.Search in Eureka ↗
Plaintiff law firmWalsh Pizzi O’Reilly Falanga LLPLaw FirmRepresenting Amgen, Inc.Search in Eureka ↗
Presiding judgeJudge N/AJudgeNew Jersey District CourtSearch in Eureka ↗
Official verdict

Official order — verbatim text

“WHEREAS Amgen Inc. and Amgen Manufacturing Limited (collectively, “Amgen” or “Plaintiffs”), and Accord BioPharma, Inc., Accord Healthcare, Inc., and Intas Pharmaceuticals, Ltd. (collectively, “Accord” or “Defendants”) were involved in litigation in the United States District Court for the District of New Jersey, MDL Case No. 1:25-md-03138, associated Case No. 1:25-cv-01305 (CPO) (EAP) (the “Accord U.S. District Court Litigation”) involving Amgen’s patents covering its denosumab antibody, pharmaceutical compositions containing denosumab, and methods of manufacture, stemming from Accord’s filing of a BLA seeking FDA approval of Accord Biosimilar Products; WHEREAS Amgen and Accord have reached an agreement to resolve the Accord U.S. District Court Litigation, executing a Confidential Settlement Agreement (“the Agreement”); WHEREAS, as a part of the Agreement, the parties agreed that the Court would enter judgment and the injunction set forth below; WHEREAS the parties have waived the entry of findings of fact and conclusions of law under Rule 65 of the Federal Rules of Civil Procedure. Case 1:25-cv-01305-CPO-EAP Document 42 Filed 07/16/25 Page 1 of 3 PageID: 12 2 THEREFORE based on the parties’ stipulation and consent, it is ORDERED, ADJUDGED, and DECREED as follows: 1. The Court has jurisdiction over the subject matter of the above-captioned case pursuant to 28 U.S.C. §§ 1331 and 1338(a). 2. The Court has personal jurisdiction over the parties, and venue is proper as to all parties pursuant to 28 U.S.C. §§ 1391(b), (c), and 1400(b). 3. The Court retains jurisdiction to enforce or supervise performance under this Order and Injunction and the parties’ Agreement dated July 9, 2025. 4. Subject to and pursuant to the terms of the Agreement and as to the Accord Biosimilar Products, the asserted claims of United States Patent Nos. 7,364,736; 7,662,930; 7,888,101; 7,928,205; 8,053,236; 8,058,418; 8,460,896; 8,680,248; 9,012,178; 9,133,493; 9,228,168; 9,320,816; 9,328,134; 9,359,435; 9,388,447; 10,106,829; 10,167,492; 10,227,627; 10,513,723; 10,583,397; 10,655,156; 10,822,630; 10,894,972; 11,077,404; 11,098,079; 11,130,980; 11,254,963; 11,299,760; 11,319,568; 11,434,514; 11,459,595; 11,946,085; 11,952,605; and 12,084,686 (“Asserted Patents”) are valid, enforceable and infringed by the making, using, selling, or offering to sell Accord Biosimilar Products in the United States of America, its territories, possessions, protectorates and the Commonwealth of Puerto Rico (“United States Territory”), or by the import of Accord Biosimilar Products into the United States Territory. 5. Subject to and pursuant to the terms of the Agreement, Accord, including any entity directly or indirectly controlled by, controlling, or under common control with it, its officers, agents and employees, and any third party acting on behalf of or in active concert with Accord is hereby enjoined from making, using, offering to sell, or selling the Accord Biosimilar Products in the Territory, or importing the Accord Biosimilar Products into the Territory, except as permitted Case 1:25-cv-01305-CPO-EAP Document 42 Filed 07/16/25 Page 2 of 3 PageID: 13 3 under the Agreement, or by 35 U.S.C. § 271(e)(1). The foregoing injunction expires on October 1, 2025. 6. Subject to the terms of the Agreement, the parties’ remaining claims and counterclaims in the above-captioned matter are dismissed with prejudice. 7. Judgment is entered with respect to the Asserted Patents, and this order fully resolves the remaining claims and counterclaims. 8. Each party shall bear its own costs.”
Source: PACER Docket, Case 1:25-cv-01305, New Jersey District Court

The consent judgment is unusually explicit: it formally adjudges all 34 asserted patents valid, enforceable, and infringed — language that goes beyond a typical settlement dismissal. This creates a judicially recorded finding that, while not binding on third parties, meaningfully strengthens Amgen’s hand in parallel BPCIA disputes. The court’s retained jurisdiction over the confidential agreement signals ongoing post-judgment obligations, likely including a licensed launch date, royalty terms, or supply conditions not visible in the public record.

PACER case 1:25-cv-01305 · Public docket record Explore in Eureka ↗
Patent at issue

US7364736B2 — denosumab antibody, compositions, and manufacturing methods

Publication No.US10167492B2
Application No.US15/529950
Patent details
Productdenosumab antibody formulations — Prolia/XGEVA compositions
Cited in actionFebruary 18, 2025

Publication No.US11459595B2
Application No.US17/554836
Patent details
Productdenosumab biosimilar composition and method of use
Cited in actionFebruary 18, 2025

Publication No.US11299760B2
Application No.US17/464115
Patent details
Productanti-RANKL antibody composition for bone disease treatment
Cited in actionFebruary 18, 2025

Publication No.US10227627B2
Application No.US16/130879
Patent details
Productdenosumab nucleic acid and expression constructs
Cited in actionFebruary 18, 2025

Publication No.US8460896B2
Application No.US13/476959
Patent details
Productisolated anti-RANKL antibody and binding fragments
Cited in actionFebruary 18, 2025

Publication No.US7888101B2
Application No.US11/634757
Patent details
Productdenosumab antibody pharmaceutical formulations
Cited in actionFebruary 18, 2025

Publication No.US8053236B2
Application No.US12/118459
Patent details
Productrecombinant anti-RANKL antibody production methods
Cited in actionFebruary 18, 2025

Publication No.US9228168B2
Application No.US13/245600
Patent details
Productdenosumab antibody composition with bone loss indication
Cited in actionFebruary 18, 2025

Publication No.US8058418B2
Application No.US11/981664
Patent details
Productanti-RANKL antibody formulation with excipient systems
Cited in actionFebruary 18, 2025

Publication No.US10822630B2
Application No.US16/783117
Patent details
Productdenosumab pharmaceutical composition manufacturing
Cited in actionFebruary 18, 2025

Publication No.US9012178B2
Application No.US13/814397
Patent details
Productanti-RANKL antibody host cell expression methods
Cited in actionFebruary 18, 2025

Publication No.US11952605B2
Application No.US18/172670
Patent details
Productdenosumab antibody variant compositions
Cited in actionFebruary 18, 2025

Publication No.US7928205B2
Application No.US11/255528
Patent details
Productanti-RANKL antibody nucleotide sequence and expression
Cited in actionFebruary 18, 2025

Publication No.US9320816B2
Application No.US12/663837
Patent details
Productdenosumab drug product lyophilisation and formulation
Cited in actionFebruary 18, 2025

Publication No.US7364736B2
Application No.US10/180648
Patent details
Productanti-RANKL monoclonal antibody composition and use
Cited in actionFebruary 18, 2025

Publication No.US11098079B2
Application No.US15/751231
Patent details
Productdenosumab biosimilar upstream manufacturing process
Cited in actionFebruary 18, 2025

Publication No.US11786866B2
Application No.US17/362282
Patent details
Productanti-RANKL antibody purification and downstream processing
Cited in actionFebruary 18, 2025

Publication No.US8680248B2
Application No.US13/905466
Patent details
Productdenosumab antibody formulation with stabiliser composition
Cited in actionFebruary 18, 2025

Publication No.US11946085B2
Application No.US18/134291
Patent details
Productdenosumab antibody cell culture manufacturing method
Cited in actionFebruary 18, 2025

Publication No.US9359435B2
Application No.US13/741280
Patent details
Productanti-RANKL antibody composition for oncology use
Cited in actionFebruary 18, 2025

Publication No.US11254963B2
Application No.US16/676340
Patent details
Productdenosumab antibody glycosylation and post-translational methods
Cited in actionFebruary 18, 2025

Publication No.US11744950B2
Application No.US16/969691
Patent details
Productanti-RANKL antibody administration and dosing method
Cited in actionFebruary 18, 2025

Publication No.US10513723B2
Application No.US15/111470
Patent details
Productdenosumab fermentation and bioreactor process
Cited in actionFebruary 18, 2025

Publication No.US10894972B2
Application No.US16/537490
Patent details
Productanti-RANKL antibody purification chromatography method
Cited in actionFebruary 18, 2025

Publication No.US10655156B2
Application No.US16/261311
Patent details
Productdenosumab antibody formulation stability method
Cited in actionFebruary 18, 2025

Publication No.US12084686B2
Application No.US17/051528
Patent details
Productdenosumab drug substance manufacturing process
Cited in actionFebruary 18, 2025

Publication No.US11319568B2
Application No.US16/654933
Patent details
Productdenosumab biosimilar fill-finish and packaging method
Cited in actionFebruary 18, 2025

Publication No.US10583397B2
Application No.US15/302762
Patent details
Productanti-RANKL antibody downstream concentration method
Cited in actionFebruary 18, 2025

Publication No.US9328134B2
Application No.US14/767737
Patent details
Productdenosumab antibody sequence and CDR composition
Cited in actionFebruary 18, 2025

Publication No.US10106829B2
Application No.US15/115615
Patent details
Productanti-RANKL antibody host cell line and expression vector
Cited in actionFebruary 18, 2025

Publication No.US11077404B2
Application No.US16/743728
Patent details
Productdenosumab antibody composition with bone metastasis indication
Cited in actionFebruary 18, 2025

Publication No.US11130980B2
Application No.US15/033559
Patent details
Productanti-RANKL antibody manufacturing quality control method
Cited in actionFebruary 18, 2025

Publication No.US11434514B2
Application No.US17/533004
Patent details
Productdenosumab antibody conjugate and combination composition
Cited in actionFebruary 18, 2025

The lead patent, US7364736B2, covers isolated anti-RANKL antibody compositions — the foundational biological mechanism underlying denosumab, Amgen’s fully human monoclonal antibody that inhibits RANK Ligand to reduce osteoclast activity. The 34-patent portfolio spans antibody compositions, pharmaceutical formulations, methods of manufacture, and host cell expression systems, reflecting Amgen’s layered IP strategy across the entire denosumab value chain from discovery through commercial manufacture.

The depth of this portfolio — covering antibody sequences, formulation excipients, bioreactor processes, and downstream purification — means any denosumab biosimilar developer faces FTO exposure at every stage of development and commercialisation. Amgen’s willingness to assert all 34 patents simultaneously in a single BPCIA action, and to secure a consent judgment affirming their validity and infringement, signals that this portfolio is built for sustained exclusivity and will likely be deployed against each remaining BLA filer in the MDL.

Patent data sourced from USPTO via PatSnap Eureka patent database Search patent records in Eureka ↗
Freedom to operate

Should you run an FTO against Amgen’s 34 denosumab patents?

Any biosimilar developer, contract development and manufacturing organisation (CDMO), or distributor working with denosumab in the U.S. market faces direct exposure to the 34-patent estate confirmed in this consent judgment. The asserted claims span antibody compositions, formulation chemistry, and manufacturing methods — meaning FTO analysis cannot be limited to the antibody sequence alone. A gap at any layer of the value chain creates litigation risk.

PatSnap Eureka’s FTO Search Agent allows R&D and IP teams to map claim scope across all 34 asserted patents simultaneously, identify prosecution history estoppel, and surface prior art relevant to invalidity arguments. Given the consent judgment’s explicit validity findings, proactive FTO and claim-by-claim risk stratification is essential before any denosumab biosimilar enters U.S. development or commercial planning.

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Related litigation

Similar BPCIA denosumab biosimilar cases in the District of New Jersey

Cases involving Amgen’s denosumab patent portfolio and biosimilar BLA filers in the New Jersey MDL 1:25-md-03138 follow closely watched BPCIA enforcement patterns.

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Amgen, Inc. patent enforcement history, New Jersey case history, Amgen, Inc.’s full IP portfolio, and comparable case analysis
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Strategic implications

What this case signals for the denosumab biosimilar IP landscape

Amgen’s 34-patent consent judgment sets a high-stakes template for remaining denosumab biosimilar challengers in the New Jersey MDL.

A 34-patent consent judgment raises the bar for all remaining biosimilar challengers

With Accord conceding validity and infringement across 34 patents by court order, Amgen holds a strengthened precedent in the active MDL. Other BLA filers facing the same portfolio will find it harder to negotiate without conceding the same — or to argue invalidity without clearing a now-judicially-confirmed patent wall.

The October 2025 injunction expiry is the number to watch for market entry timing

The injunction’s precise October 1, 2025 expiry strongly suggests a negotiated licensed entry date in the confidential agreement. Payers, competitors, and market analysts tracking denosumab biosimilar competition should treat that date as a likely first-entry signal — subject to FDA approval milestones and any additional confidential conditions.

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MDL sequencing tacticsPost-injunction entry riskFTO across 34 patents
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Frequently asked questions

Amgen v Accord — key questions answered

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Track Amgen’s denosumab biosimilar enforcement across the full MDL

With 34 patents confirmed valid by consent judgment and additional BLA filers pending in the MDL, proactive FTO monitoring is critical. PatSnap Eureka maps claim scope, tracks BPCIA case developments, and surfaces prior art in real time.

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