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American Regent v. Amneal Pharmaceuticals — Trace Elements Injection IP | PatSnap
Explore in Eureka
Case ID2:25-cv-02642
FiledApr 2025
ClosedAug 2025
Patent Litigation

American Regent v. Amneal Pharmaceuticals: Consent Judgment & Injunction in 112 Days

American Regent filed suit against Amneal in the District of New Jersey, asserting five patents covering its Tralement® trace elements injection 4* USP product. The case resolved in just 112 days via a consent judgment that permanently enjoins Amneal’s ANDA No. 219027 product from launch absent ARI authorisation — a swift and decisive outcome for the patent holder.

Resolution time
112days
112 days — well below the typical 2–4 year ANDA patent litigation timeline
Patents asserted
5
US11786548B2 and 4 further patents asserted covering trace elements injection formulations
Outcome
Consent Judgment
Dismissed without prejudice; injunction entered by agreement of the parties
Cost ruling
No Costs Awarded
Each party bears its own costs, disbursements, and attorneys’ fees per consent order
Published by PatSnap Insights Team · Verified by PatSnap Eureka Data
Case overview

A rapid ANDA settlement that locks Amneal out of the Tralement® market

On 11 April 2025, American Regent, Inc. (ARI) filed a Hatch-Waxman patent infringement action in the District of New Jersey (Case No. 2:25-cv-02642) against Amneal Pharmaceuticals of New York, LLC and Amneal EU, Limited. ARI asserted five US patents — ‘548, ‘022, ‘565, ‘956, and ‘957 — covering its Tralement® trace elements injection 4* USP product, a parenteral micronutrient formulation used in intravenous nutrition. Amneal’s challenge arose from its filing of ANDA No. 219027 seeking approval to market a generic version of that product.

The case closed on 1 August 2025 via a consent judgment and injunction entered with court approval. Under the order, all claims and counterclaims are dismissed without prejudice and without costs. Critically, Amneal and its affiliates are enjoined from making, using, selling, offering to sell, or importing the ANDA product in the United States unless specifically authorised by ARI under a separate settlement agreement. The court retains jurisdiction to enforce the consent judgment, and the FDA is expressly not precluded from granting final ANDA approval — signalling a potential future licensed entry pathway.

Resolution in 112 days is notably fast for ANDA litigation, which typically proceeds through claim construction, fact discovery, and trial over two to four years. The speed suggests the parties reached commercial terms — likely a negotiated market entry date — rather than litigating validity or infringement to judgment. The private settlement agreement governing the licensed entry date is not public, leaving the precise exclusion period unknown from the court record alone.

Case at a glance
Case no.2:25-cv-02642
CourtNew Jersey
JudgeN/A
FiledApril 11, 2025
ClosedAugust 1, 2025
Duration112 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 112 days

112 days — well below the typical 2–4 year ANDA patent litigation timeline

Case timeline: Complaint filed APR 11 2025, JUN–JUL — 112 days total Horizontal timeline showing the three key events in American Regent, Inc. v Amneal Pharmaceuticals, Inc. from filing to resolution. Source: PACER, New Jersey District Court. APR 11 2025 Complaint filed Pre-trial proceedings AUG 1 2025 Consent Judgment 112 DAYS TOTAL
Dismissal terms

Consent judgment entered: what the injunction and dismissal mean for both parties

Legal mechanism

Consent judgment combines settlement with court-enforceable injunction

A consent judgment is a negotiated order entered by the court at the parties’ request, carrying the full enforcement weight of a litigated judgment. Here, claims are dismissed without prejudice — preserving the ability to re-litigate if consent terms are breached — while the injunction is immediately binding. This structure is standard in Hatch-Waxman settlements where the innovator wants FDA approval to proceed but market entry to remain controlled.

Court-enforceable settlement
Patent holder outcome

ARI secures injunction protecting Tralement® exclusivity

American Regent obtained the commercially meaningful result: Amneal cannot launch its ANDA product without ARI’s authorisation. The five Licensed ARI Patents remain unchallenged on the merits — no invalidity finding, no narrowing of claims. The dismissal without prejudice means ARI can return to court if Amneal violates the settlement agreement. The express FDA carve-out suggests ARI negotiated a licensed entry date, converting a litigation risk into a controlled revenue arrangement.

Exclusivity maintained
Generic challenger outcome

Amneal’s ANDA survives — but launch gated by ARI authorisation

Amneal’s ANDA No. 219027 remains intact and FDA approval is not blocked by the consent order. Paragraph IV certification rights are also preserved, which is significant: Amneal may recertify or amend its ANDA in the future. However, any commercial launch in the US requires ARI’s explicit authorisation under the private settlement agreement. The terms of that agreement — including any negotiated market entry date — are not part of the public record.

Gated licensed entry
Commercial implications

Five-patent portfolio creates a high barrier for any follow-on ANDA filer

With five patents listed and an injunction obtained in under four months, ARI has demonstrated both portfolio depth and litigation agility in the parenteral micronutrient space. Any other generic manufacturer considering an ANDA referencing Tralement® faces the same five-patent gauntlet. The consent judgment, while not an admission on validity, signals that Amneal assessed litigation risk as commercially unfavourable — a signal that may deter near-term ANDA competition from other filers.

High ANDA entry barrier
Legal analysis based on PACER docket records for case 2:25-cv-02642 and PatSnap Eureka litigation intelligence Search PatSnap Eureka ↗
Parties and representation

Full party and counsel information

RoleNameTypeDetail
PlaintiffAmerican Regent, Inc.CompanyPharmaceutical innovator and IV nutrition specialist — holder of US11786548B2 and four related Tralement® patentsSearch in Eureka ↗
DefendantAmneal Pharmaceuticals, Inc.CompanyGeneric pharmaceutical manufacturer seeking ANDA approval for a trace elements injection productSearch in Eureka ↗
Plaintiff counselCharles H. ChevalierAttorneyCounsel for American Regent, Inc.Search in Eureka ↗
Plaintiff counselChristine A. GaddisAttorneyCounsel for American Regent, Inc.Search in Eureka ↗
Plaintiff law firmGibbons PCLaw FirmRepresenting American Regent, Inc.Search in Eureka ↗
Presiding judgeJudge N/AJudgeNew Jersey District CourtSearch in Eureka ↗
Official verdict

Official order — verbatim text

“American Regent, Inc. (“ARI”), and Amneal Pharmaceuticals of New York, LLC and Amneal EU, Limited (together “AMNEAL”), parties in the above-captioned Actions, specifically in the Action initiated by Plaintiff, ARI, against AMNEAL in Civil Action Nos. 2:25-cv-02642-BRM-CLW and 2:25-cv-12169-BRM-CLW, have resolved this litigation for good cause and valuable consideration recognized by ARI and AMNEAL. Now the parties, by their respective undersigned attorneys, hereby stipulate and consent to entry of judgment and an injunction in the Actions, as follows: IT IS this _____ day of ___________, 2025: ORDERED, ADJUDGED AND DECREED as follows: 1. This District Court has jurisdiction over the subject matter of the above Actions and has personal jurisdiction over the parties. 2. As used in this Consent Judgment, (i) the term “AMNEAL Product(s)” shall mean the drug product(s) manufactured, sold, offered for sale or distributed pursuant to Abbreviated New Drug Application No. 219027 (including any supplements, or modification or amendments thereto or replacements thereof) (“AMNEAL’s ANDA”); (ii) the term “Licensed ARI Patents” shall mean United States Patent United States Patent Nos.: AMERICAN REGENT, INC. v. AMNEAL PHARMACEUTICALS OF NEW YORK, LLC AND AMNEAL EU, LIMITED 1st August Case 2:25-cv-02642-BRM-CLW Document 18 Filed 08/01/25 Page 1 of 4 PageID: 535 11,786,548 (“the ‘548 Patent”); 11,975,022 (“the ‘022 Patent”); 11,998,565 (“the ’565 Patent”); 12,150,956 (“the ‘956 Patent”) and 12,150,957 (“the ’957 Patent”); and (iii) the term “Affiliate” shall mean any entity or person that, directly or indirectly through one or more intermediaries, controls, is controlled by, or is under common control with AMNEAL; for purposes of this definition, “control” means: (a) ownership, directly or through one or more intermediaries, of: (1) more than fifty percent (50%) of the shares of stock entitled to vote for the election of directors, in the case of a corporation, or (2) more than fifty percent (50%) of the equity interests in the case of any other type of legal entity or status as a general partner in any partnership; or (b) any other arrangement whereby an entity or person has the right to elect a majority of the Board of Directors or equivalent governing body of a corporation or other entity or the right to direct the management and policies of a corporation or other entity. 3. Unless otherwise specifically authorized by ARI pursuant to the Settlement Agreement or by 35 U.S.C. § 271(e)(1), AMNEAL, including any of its Affiliates, successors and assigns, is enjoined from infringing the Licensed ARI Patents, on its own part or through any Affiliate, by making, having made, using, selling, offering to sell, importing or distributing of the AMNEAL Product(s) in the United States. 4. Compliance with this Consent Judgment may be enforced by ARI, its successors in interest, or assigns, as permitted by the terms of the Settlement Agreement. 5. This District Court retains jurisdiction to enforce or supervise performance under this Consent Judgment and the Settlement Agreement. 6. All claims, counterclaims, affirmative defenses and demands in these Actions are hereby dismissed without prejudice and without costs, disbursements or attorneys’ fees to any party. Case 2:25-cv-02642-BRM-CLW Document 18 Filed 08/01/25 Page 2 of 4 PageID: 536 7. Nothing herein shall preclude the U.S. Food & Drug Administration from granting final approval to AMNEAL’s ANDA or shall preclude AMNEAL from filing, modifying, amending, recertifying or maintaining with the FDA any Paragraph IV Certification for the AMNEAL Product(s) pursuant to 21 U.S.C. § 355(j)(2)(A)(vii)(IV).”
Source: PACER Docket, Case 2:25-cv-02642, New Jersey District Court

The consent judgment combines a without-prejudice dismissal of all claims with an immediately enforceable injunction — an intentional structural choice. The without-prejudice language means neither party conceded validity or infringement on the merits, preserving litigation optionality if the private settlement agreement is breached. The injunction’s scope expressly covers Amneal’s affiliates, successors, and assigns, closing off any corporate restructuring workaround. The FDA carve-out in paragraph 7 is a standard Hatch-Waxman settlement feature confirming that patent and regulatory approval tracks remain legally independent.

PACER case 2:25-cv-02642 · Public docket record Explore in Eureka ↗
Patent at issue

US11786548B2 and four related patents — Tralement® trace elements injection 4* USP

Publication No.US12150956B2
Application No.US18/653608
Patent details
Producttrace elements injection 4* USP formulation — composition or method patent
Cited in actionApril 11, 2025

Publication No.US12150957B2
Application No.US18/672876
Patent details
Producttrace elements injection 4* USP formulation — composition or method patent
Cited in actionApril 11, 2025

Publication No.US11975022B2
Application No.US18/482612
Patent details
Producttrace elements injection 4* USP formulation — composition or method patent
Cited in actionApril 11, 2025

Publication No.US11998565B2
Application No.US18/124391
Patent details
Producttrace elements injection 4* USP formulation — composition or method patent
Cited in actionApril 11, 2025

Publication No.US11786548B2
Application No.US17/365695
Patent details
Producttrace elements injection 4* USP formulation — composition or method patent
Cited in actionApril 11, 2025

The five asserted patents — US11786548B2, US11975022B2, US11998565B2, US12150956B2, and US12150957B2 — constitute ARI’s listed patent estate for Tralement® (trace elements injection 4*, USP), a parenteral formulation delivering essential micronutrients intravenously to patients who cannot receive enteral nutrition. The US patent numbers in the 11–12 million series indicate issuance between approximately 2023 and 2024, placing these squarely within a lifecycle management or product-launch-stage patent strategy. The application numbers span filings from at least US17/365695 through US18/672876, suggesting a continuation or continuation-in-part family structure.

For competitors in the IV nutrition and parenteral micronutrient space, this five-patent cluster signals that ARI has constructed a layered exclusivity strategy around Tralement® that will require challengers to address all five patents in any ANDA Paragraph IV proceeding. The breadth of the injunction — covering making, using, selling, importing, and distributing — leaves no commercial pathway for Amneal absent ARI consent. Any generic manufacturer or biosimilar developer working in the trace elements injection category should treat this portfolio as an active and enforced barrier, and commission a freedom-to-operate analysis before ANDA filing.

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

Should your team run an FTO against ARI’s Tralement® patent estate?

If your organisation is developing, filing, or investing in a generic or follow-on trace elements injection product — particularly any ANDA referencing Tralement® (trace elements injection 4*, USP) — all five ARI patents are now confirmed as actively enforced in the District of New Jersey. The injunction obtained here demonstrates ARI’s willingness and capacity to seek immediate relief against ANDA filers. R&D and regulatory teams should not assume that design-around options exist without a thorough claim-by-claim FTO review of US11786548B2, US11975022B2, US11998565B2, US12150956B2, and US12150957B2.

PatSnap Eureka’s FTO Search Agent can map each of the five ARI patent claims against your proposed formulation parameters, flag continuation applications in the same family that may not yet be listed on the ANDA, and surface prior art relevant to any IPR or post-grant challenge strategy. Given the recently-issued dates of this portfolio, claim scope may still be evolving through continuation filings — Eureka’s real-time prosecution monitoring ensures your FTO remains current as the ARI patent family develops.

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Related litigation

Similar ANDA patent cases in parenteral nutrition and IV formulation IP

Explore Hatch-Waxman infringement actions in New Jersey and related districts involving parenteral formulation patents and ANDA consent judgments.

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American Regent, Inc. patent enforcement history, New Jersey case history, American Regent, Inc.’s full IP portfolio, and comparable case analysis
Comparable ANDA settlementsIV nutrition patent disputesNJ District consent judgmentsTrace elements ANDA filings
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Strategic implications

What this case signals for the parenteral nutrition IP landscape

A five-patent consent judgment in 112 days reshapes the competitive calculus for any ANDA filer targeting trace elements injection products.

Multi-patent ANDA listings compress litigation leverage for generics

ARI’s five-patent listing against a single ANDA forces any challenger to invalidate or design around all five claims simultaneously. The speed of settlement here — 112 days — is consistent with a generic filer concluding that litigation costs and risk outweigh a negotiated entry date. IP teams in pharma should audit their listed-patent portfolios against ANDA exposure to assess whether stacking provides comparable deterrence.

Consent judgments with injunctions offer innovators enforcement certainty

Unlike a simple dismissal, a consent judgment retains court jurisdiction for enforcement. ARI can return to the District of New Jersey to enforce the injunction without re-filing a new action. For pharmaceutical IP counsel, this structure is preferable to a stand-alone settlement agreement where enforcement requires a separate breach-of-contract suit — particularly where an ANDA launch could cause rapid, irreversible market harm.

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Unlock sector-specific analysis for parenteral nutrition patent strategy and District of New Jersey ANDA litigation trends.
Licensed entry date signalsARI continuation pipelineANDA No. 219027 FDA status
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Frequently asked questions

American v Amneal — key questions answered

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