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Aragon Pharmaceuticals v. Hetero Labs — Apalutamide Patent Consent Judgment | PatSnap
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Case ID2:22-cv-03212
FiledMay 2022
ClosedOct 2024
Patent Litigation

Aragon Pharmaceuticals v. Hetero Labs: Apalutamide Consent Judgment After 872 Days

Aragon Pharmaceuticals, Janssen Biotech, Sloan-Kettering, and the UC Regents brought a six-patent infringement action against Hetero Labs and Hetero USA over generic apalutamide tablets referencing Erleada® (NDA 210951). After 872 days of litigation in the New Jersey District Court, Hetero conceded validity and infringement in a binding consent judgment, accepting a permanent injunction through patent expiry.

Resolution time
872days
872 days — above the median for ANDA infringement cases in D.N.J., consistent with multi-patent Hatch-Waxman complexity
Patents asserted
6
US8445507B2 and 5 further patents asserted — covering apalutamide (Erleada®) prostate cancer compound and formulations
Outcome
Consent Judgment
Hetero admitted validity and infringement; permanent injunction entered through patent expiry
Cost ruling
Each Side Bears Own Costs
Parties agreed to bear their own attorneys’ fees and costs; no fee-shifting ordered
Published by PatSnap Insights Team · Verified by PatSnap Eureka Data
Case overview

Six-Patent Apalutamide Blockade Ends in Hetero Concession

Filed on 27 May 2022 in the District of New Jersey, this Hatch-Waxman action was brought by Aragon Pharmaceuticals, Sloan-Kettering Institute for Cancer Research, the Regents of the University of California, and Janssen Biotech against Hetero Labs Ltd Unit V and Hetero USA, Inc. The plaintiffs asserted six patents — US8445507B2, US9884054B2, US9481663B2, US10849888B2, US10702508B2, and USRE049353E — covering the androgen receptor antagonist apalutamide, the active pharmaceutical ingredient in Erleada®, a prostate cancer therapy approved under NDA No. 210951.

The case closed on 15 October 2024 via a consent judgment rather than a contested trial. Hetero admitted that the asserted claims of all six patents-in-suit are valid and enforceable, and that commercial manufacture, sale, offer for sale, or importation of its ANDA product in the United States prior to patent expiry would constitute infringement. The court entered a permanent injunction barring Hetero and its affiliates from any such activity until expiry of the patents, including any patent term extensions, adjustments, and associated pediatric exclusivity periods. All affirmative defenses, counterclaims, and potential claims were dismissed with prejudice, and both parties waived any right of appeal.

The 872-day duration suggests the parties conducted meaningful litigation — including likely ANDA paragraph IV certification challenges — before reaching a negotiated resolution that avoided trial risk. The consent judgment’s inclusion of a prejudice dismissal of all counterclaims, combined with Hetero’s blanket admission of validity, represents an unusually complete concession for an ANDA defendant. The public record does not disclose whether any authorised generic arrangement or settlement payment was part of the broader commercial agreement between the parties, which is typical of confidential Hatch-Waxman resolutions.

Case at a glance
Case no.2:22-cv-03212
CourtNew Jersey
JudgeN/A
FiledMay 27, 2022
ClosedOctober 15, 2024
Duration872 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 872 days

872 days — above the median for ANDA infringement cases in D.N.J., consistent with multi-patent Hatch-Waxman complexity

Case timeline: Complaint filed MAY 27 2022, AUG–SEP — 872 days total Horizontal timeline showing the three key events in ARAGON PHARMACEUTICALS, INC. v Hetero Labs Ltd Unit V from filing to resolution. Source: PACER, New Jersey District Court. MAY 27 2022 Complaint filed Pre-trial proceedings OCT 15 2024 Consent Judgment 872 DAYS TOTAL
Dismissal terms

Consent judgment entered: what Hetero’s admission means for both sides

Legal mechanism

Consent judgment is not a settlement — it is a court order

A consent judgment is a binding judicial decree, not merely a private settlement agreement. By entering this order, the New Jersey District Court gave legal force to Hetero’s admissions of validity and infringement. Critically, both parties waived all appellate rights, making the outcome final and immediately enforceable. This forecloses any future attempt by Hetero to relitigate patent validity in this forum.

Permanent injunction through expiry
Patent holder outcome

Plaintiffs secure full injunctive protection through patent expiry

The consent judgment delivers near-complete relief for Aragon, Janssen, Sloan-Kettering, and the UC Regents. Hetero’s admission of validity and infringement across all six patents strengthens the patents’ public record standing. The injunction extends through any patent term extensions, adjustments, and pediatric exclusivity, maximising the exclusivity runway for Erleada®. All counterclaims — including any invalidity challenges — were dismissed with prejudice.

All six patents validated on record
Generic challenger outcome

Hetero’s ANDA product blocked; all invalidity defences surrendered

Hetero and its affiliates are permanently enjoined from commercialising their apalutamide ANDA product in the United States until every asserted patent expires, including exclusivity extensions. By dismissing all counterclaims with prejudice and admitting validity, Hetero surrendered every invalidity and non-infringement argument it had or could have raised. The waiver of appellate rights removes any further legal avenue to challenge the injunction’s scope.

Appellate rights waived
Commercial implications

Erleada® exclusivity reinforced; other ANDA filers face a stronger record

Hetero’s public, court-ordered admission that the six apalutamide patents are valid and enforceable creates an adverse precedent record for any other generic filer seeking to challenge these patents via paragraph IV certification or IPR. Competing ANDA applicants cannot rely on Hetero’s litigation as prior art for invalidity arguments. The scope of the injunction — covering manufacture, use, sale, offer for sale, and importation — is comprehensive, consistent with full Hatch-Waxman exclusivity protection.

Broader generic entry barrier raised
Legal analysis based on PACER docket records for case 2:22-cv-03212 and PatSnap Eureka litigation intelligence Search PatSnap Eureka ↗
Parties and representation

Full party and counsel information

RoleNameTypeDetail
PlaintiffARAGON PHARMACEUTICALS, INC.CompanyPharmaceutical patent holders — asserting six patents covering apalutamide (Erleada®)Search in Eureka ↗
Co-PlaintiffSloan-Kettering Institute for Cancer ResearchIndividualSearch in Eureka ↗
Co-PlaintiffThe Regents of the University of CaliforniaIndividualSearch in Eureka ↗
Co-PlaintiffJanssen Biotech, Inc.CompanySearch in Eureka ↗
DefendantHetero Labs Ltd Unit VCompanyIndian generic pharmaceutical manufacturer and its US affiliate seeking ANDA approval for apalutamide tabletsSearch in Eureka ↗
Co-DefendantHetero USA, Inc.CompanySearch in Eureka ↗
Plaintiff counselKeith J. MillerAttorneyCounsel for ARAGON PHARMACEUTICALS, INC.Search in Eureka ↗
Plaintiff counselMichael James GesualdoAttorneyCounsel for ARAGON PHARMACEUTICALS, INC.Search in Eureka ↗
Plaintiff law firmRobinson Miller LLCLaw FirmRepresenting ARAGON PHARMACEUTICALS, INC.Search in Eureka ↗
Defendant counselRebekah R. ConroyAttorneyCounsel for Hetero Labs Ltd Unit VSearch in Eureka ↗
Defendant counselSURINDER K. AGGARWALAttorneyCounsel for Hetero Labs Ltd Unit VSearch in Eureka ↗
Defendant law firmStone Conroy LLCLaw FirmRepresenting Hetero Labs Ltd Unit VSearch in Eureka ↗
Presiding judgeJudge N/AJudgeNew Jersey District CourtSearch in Eureka ↗
Official verdict

Official order — verbatim text

“IT IS ORDERED, ADJUDGED AND DECREED as follows: 1. This District Court has jurisdiction over the subject matter of the above action and has personal jurisdiction over the parties. 2. Hetero admits that the claims of the Patents-in-Suit are valid and enforceable with respect to products containing Apalutamide (the active pharmaceutical ingredient in the Hetero Product) as the sole active ingredient that are sold, offered for sale, or distributed under an Abbreviated New Drug Application that refers to the product sold pursuant to NDA No. 210951 as the reference-listed drug, and that the claims of the Patents-in-Suit would be infringed by the commercial manufacture, use, sale, offer for sale, or importation of the Hetero Product in the United States prior to the expiration of the Patents-in-Suit. Hetero and its affiliates are hereby enjoined from manufacturing, using, offering for sale, selling in the United States, or importing into the United States, the Hetero ANDA Product until the expiration of the Patents-in-Suit, including any patent term extensions and/or patent term adjustments and during the period of any associated pediatric exclusivity, other than as authorized by Plaintiffs. 4. All affirmative defenses, claims and counterclaims, which have been or could have been raised by Plaintiffs against Hetero and its affiliates, or by Hetero and its affiliates against Plaintiffs, in this litigation solely with respect to the Patents-in-Suit as asserted against the Hetero ANDA Product are hereby dismissed with prejudice. 5. Plaintiffs and Hetero shall bear their own fees and costs in connection with this litigation, including attorneys’ fees. 6. Plaintiffs and Hetero waive all right to appeal or otherwise move for relief from this Judgment and Order. 7. This Court shall retain jurisdiction of this litigation and over Plaintiffs and Hetero for purposes of enforcement of the provisions of this Judgment and Order.”
Source: PACER Docket, Case 2:22-cv-03212, New Jersey District Court

The consent judgment is notable for its explicit and comprehensive admission language: Hetero stipulated not merely that infringement would occur, but that the claims ‘are valid and enforceable’ — language that goes beyond what many ANDA consent decrees require. This formulation, combined with dismissal of all counterclaims with prejudice and a mutual appellate waiver, creates one of the strongest possible records for the patent holders short of a contested trial verdict. The court’s retained jurisdiction for enforcement purposes ensures ongoing judicial oversight of the injunction, a standard feature in Hatch-Waxman final orders.

PACER case 2:22-cv-03212 · Public docket record Explore in Eureka ↗
Patent at issue

US8445507B2 and five further patents — apalutamide androgen receptor antagonist

Publication No.US8445507B2
Application No.US12/294881
Patent details
ProductApalutamide androgen receptor antagonist compound
Cited in actionMay 27, 2022

Publication No.US9884054B2
Application No.US14/034460
Patent details
ProductApalutamide pharmaceutical formulations and methods of use
Cited in actionMay 27, 2022

Publication No.US9481663B2
Application No.US14/406520
Patent details
ProductApalutamide compositions for prostate cancer treatment
Cited in actionMay 27, 2022

Publication No.US10849888B2
Application No.US16/033432
Patent details
ProductApalutamide treatment methods and dosing regimens
Cited in actionMay 27, 2022

Publication No.US10702508B2
Application No.US15/967452
Patent details
ProductApalutamide oral tablet formulation and manufacturing
Cited in actionMay 27, 2022

Publication No.USRE049353E
Application No.US16/998683
Patent details
ProductReissued apalutamide androgen receptor antagonist claims
Cited in actionMay 27, 2022

The six asserted patents — US8445507B2, US9884054B2, US9481663B2, US10849888B2, US10702508B2, and USRE049353E — collectively cover apalutamide, a non-steroidal androgen receptor antagonist approved for metastatic castration-sensitive and non-metastatic castration-resistant prostate cancer. The inclusion of a reissue patent (USRE049353E) suggests the portfolio has been actively maintained and broadened post-grant. Application dates span from the underlying priority applications through continuations filed as recently as US16/033432, reflecting a layered continuation strategy designed to extend enforceability across multiple claim families.

Apalutamide (Erleada®) is a commercially significant oncology asset generating substantial revenues for Janssen. The multi-institution ownership structure — spanning Aragon Pharmaceuticals (now part of Johnson & Johnson), the UC Regents, Sloan-Kettering, and Janssen Biotech — is consistent with academic-originated drug discovery programmes where foundational chemistry patents are held by universities while commercialisation rights are licensed to industry. This distributed ownership complicates any IPR challenge, as petitioners must address a well-resourced patent owner consortium with strong reputational and commercial incentives to defend.

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

Should you run an FTO analysis against the apalutamide patent estate?

Any company developing, formulating, or seeking ANDA approval for androgen receptor antagonists — particularly apalutamide or structurally related diarylthiohydantoin compounds — should conduct a rigorous freedom-to-operate analysis against the six asserted patents and their family members before filing. The consent judgment’s validity admissions reinforce these patents’ enforceability status and signal that the patent holder coalition will actively litigate ANDA challenges. Drug delivery companies, CMOs handling apalutamide API, and oncology portfolio acquirers should similarly assess exposure.

PatSnap Eureka’s FTO Search Agent can map the full claim scope of each of the six apalutamide patents, identify related family members, and surface design-around opportunities based on prosecution history. Eureka’s AI-driven claim charting tools allow R&D teams to compare proposed apalutamide formulations or analogues against the broadest independent claims, prioritising freedom-to-operate risk before committing to costly ANDA filings or development programmes.

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Related litigation

Similar apalutamide and Hatch-Waxman ANDA patent cases in D.N.J.

Cases involving apalutamide ANDA challenges, androgen receptor antagonist patents, and multi-patent Hatch-Waxman consent judgments filed in the District of New Jersey.

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ARAGON PHARMACEUTICALS, INC. patent enforcement history, New Jersey case history, ARAGON PHARMACEUTICALS, INC.’s full IP portfolio, and comparable case analysis
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Strategic implications

What this case signals for the oncology pharmaceutical IP landscape

The Hetero consent judgment illustrates how multi-patent Hatch-Waxman stacks can deter generic competition well beyond initial ANDA filing.

Multi-patent stacking remains the dominant Hatch-Waxman defence strategy

By asserting six patents covering compound, formulation, and method-of-use claims, the plaintiffs created a litigation burden that proved commercially prohibitive for Hetero to contest through trial. Generic challengers evaluating apalutamide ANDA filings should assess the full breadth of the patent estate, not merely the Orange Book-listed patents, before committing litigation resources.

Consent judgments with validity admissions raise the bar for successor challengers

While a consent judgment technically binds only the parties, Hetero’s court-ordered admission of validity across all six patents creates a public record that future IPR petitioners and ANDA paragraph IV filers must address. Patent offices and courts may treat such admissions as commercially significant signals, even if not legally preclusive against third parties.

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Frequently asked questions

ARAGON v Hetero — key questions answered

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PatSnap Eureka tracks the full apalutamide patent estate, ANDA litigation activity, and expiry timelines in real time. Run a freedom-to-operate search or set up enforcement alerts to stay ahead of new paragraph IV certifications targeting Erleada®.

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