Amicus Therapeutics v. Aurobindo Pharma: Migalastat Patent Consent Judgment
Amicus Therapeutics filed suit in the District of Delaware against Aurobindo Pharma over three patents covering migalastat (GALAFOLD), a treatment for Fabry disease. The case resolved after 381 days via a consent judgment, permanent injunction, and a separate license agreement — with Aurobindo acknowledging patent validity and infringement.
ANDA Infringement Action Ends in Consent Judgment Favouring Amicus
On 6 December 2024, Amicus Therapeutics US, LLC filed suit in the District of Delaware against Aurobindo Pharma Ltd. under 35 U.S.C. § 271(e)(2), alleging that Aurobindo’s submission of ANDA No. 217786 — seeking FDA approval to commercialise generic 123 mg free base migalastat capsules — infringed three patents protecting its branded GALAFOLD product. The asserted patents are US12042489B2, US12109205B2, and US12042490B2, all covering aspects of migalastat formulations and their therapeutic use in Fabry disease.
The matter closed on 22 December 2025 via an unopposed consent judgment and permanent injunction. Under the judgment, Aurobindo acknowledged validity and enforceability of all three asserted patents, admitted infringement under § 271(e)(2), and accepted a permanent injunction barring commercial manufacture, sale, importation, or distribution of generic migalastat covered by ANDA No. 217786 — unless expressly licensed by Amicus. A contemporaneous, separately executed License Agreement governs any future authorised entry, the specific terms of which are not public record.
A resolution in just 381 days — before any substantive merits briefing appears on the public docket — is consistent with Hatch-Waxman cases that settle early once ANDA filers assess litigation risk against a multi-patent portfolio. The public record does not disclose the commercial terms of the license, including any market entry date or royalty structure, leaving open the question of when, if ever, generic migalastat may reach patients under the Aurobindo arrangement. The court retained jurisdiction to enforce both the consent judgment and the License Agreement.
Filing to Consent Judgment in 381 days
381 days from filing to consent judgment — faster than the median Hatch-Waxman trial in Delaware
Consent judgment and permanent injunction: what the resolution means for both parties
Consent judgment is more than a settlement — it binds Aurobindo permanently
A consent judgment under Hatch-Waxman carries significant weight beyond a typical settlement. Aurobindo formally acknowledged patent validity, enforceability, and infringement under 35 U.S.C. § 271(e)(2). The court entered a permanent injunction, not merely a contractual undertaking. This means violation could constitute civil contempt, and the admissions on validity may have downstream implications in any related ANDA litigation involving the same patents.
Consent judgment + permanent injunctionAmicus secures injunction and validity concession without going to trial
The outcome is strategically strong for Amicus. Aurobindo’s formal acknowledgment that the three asserted patents are valid and enforceable creates a public record that may deter or disadvantage other ANDA filers facing the same patents. The permanent injunction ensures Aurobindo cannot launch generic migalastat outside the License Agreement. The terms of the license — including any authorised generic launch date — remain confidential, preserving Amicus’s commercial flexibility.
Strong patent holder positionAurobindo is enjoined but retains a licensed path to market
While Aurobindo accepted an injunction and acknowledged infringement, it also secured a License Agreement that presumably grants a future right to market generic migalastat at some agreed date. The consent judgment notes that final FDA approval of ANDA No. 217786 may be granted as of the judgment date — a provision with regulatory significance under 21 U.S.C. § 355(j)(5)(B)(iii). Aurobindo therefore preserves an eventual commercial opportunity, though the specific launch window is not disclosed.
Injunction with licensed entry pathGALAFOLD patent wall strengthened ahead of likely further ANDA challenges
A consent judgment acknowledging validity of three migalastat patents sends a clear signal to other potential generic entrants. Any subsequent ANDA filer seeking to challenge the same patents faces the reputational weight of Aurobindo’s admissions, even if those admissions are not legally binding on third parties. Companies holding ANDA positions or monitoring generic migalastat entry should track the License Agreement’s undisclosed launch date as the operative market-entry trigger for this compound.
Strengthened exclusivity signalFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Amicus Therapeutics US, LLC | Company | Rare-disease biopharmaceutical company — holder of GALAFOLD (migalastat) patents for Fabry diseaseSearch in Eureka ↗ |
| Defendant | Aurobindo Pharma, Ltd. | Company | Indian generic pharmaceutical manufacturer seeking FDA ANDA approval for generic migalastat capsulesSearch in Eureka ↗ |
| Plaintiff counsel | Cameron Paul Clark | Attorney | Counsel for Amicus Therapeutics US, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Chad S.C. Stover | Attorney | Counsel for Amicus Therapeutics US, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Karen Jacobs | Attorney | Counsel for Amicus Therapeutics US, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Megan Elizabeth Dellinger | Attorney | Counsel for Amicus Therapeutics US, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Barnes & Thornburg LLP | Law Firm | Representing Amicus Therapeutics US, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Morris, Nichols, Arsht & Tunnell LLP | Law Firm | Representing Amicus Therapeutics US, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Christopher J. Burke | Judge | Delaware District CourtSearch in Eureka ↗ |
Official order — verbatim text
The consent judgment is notable for the breadth of Aurobindo’s concessions: explicit acknowledgment of patent validity, enforceability, and infringement — not merely an agreement to be bound by an injunction. The dismissal of all claims without prejudice, combined with a retained-jurisdiction clause, means the court can act swiftly on any future breach of the License Agreement or injunction without requiring a new filing. The without-prejudice dismissal does not signal weakness in Amicus’s claims; it is standard Hatch-Waxman practice where the license governs ongoing obligations.
US12042489B2, US12109205B2 & US12042490B2 — Migalastat Formulations for Fabry Disease
The three asserted patents — US12042489B2, US12109205B2, and US12042490B2 — protect aspects of migalastat, a pharmacological chaperone therapy approved as GALAFOLD for Fabry disease, a rare lysosomal storage disorder. The patents span formulation and method-of-use claims tied to 123 mg free base migalastat capsules. Their application numbers (US18/326279, US17/078840, and US18/326281) suggest continuation and divisional filing strategies, consistent with an evergreening approach designed to extend exclusivity beyond any single foundational patent.
For the Fabry disease treatment market — a segment with limited approved therapies and a small but high-value patient population — overlapping patents on the same active compound create a formidable barrier to generic entry. The consent judgment’s validation of all three patents reinforces Amicus’s exclusivity position. Any competitor considering an ANDA for migalastat must now design around or challenge this three-patent cluster, and the public record of Aurobindo’s validity concession raises the reputational stakes for any such challenge.
Should you run an FTO against the GALAFOLD migalastat patent portfolio?
Any company developing, manufacturing, or seeking to commercialise generic migalastat capsules — or investigating pharmacological chaperone therapies for lysosomal storage disorders more broadly — should conduct freedom-to-operate analysis against this three-patent cluster before submitting an ANDA or investing in formulation development. The consent judgment has reinforced the validity of all three patents on the public record, and the court retains jurisdiction for expedited enforcement.
PatSnap Eureka’s FTO Search Agent enables rapid landscaping of the migalastat patent family, identification of related continuations and divisionals, and claim-level analysis of the coverage of US12042489B2, US12109205B2, and US12042490B2. R&D and regulatory teams can use Eureka to map claim scope against proposed ANDA formulations and flag overlap before committing development resources, reducing the risk of replicating Aurobindo’s litigation exposure.
Run a freedom-to-operate analysis on US12042489B2 to assess your product’s exposure
Run FTO in Eureka →Similar Hatch-Waxman ANDA Infringement Cases in Delaware District Court
Cases involving ANDA-based patent infringement over rare-disease or small-molecule formulation patents litigated in Delaware District Court with comparable consent judgment or early settlement resolutions.
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 Aurobindo’s 123 mg free base migalastat capsules-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.
DecidedAmicus Therapeutics US, LLC’s broader IP enforcement history
Amicus Therapeutics US, LLC’s full litigation history covering prior enforcement, licensing activity, and inter partes review proceedings.
Portfolio viewWhat this case signals for the rare-disease generics IP landscape
Early consent judgments in Hatch-Waxman cases often reveal the relative strength of a branded company’s patent portfolio and its willingness to license on undisclosed terms.
Multi-patent portfolios accelerate Hatch-Waxman settlements
Amicus asserted three patents simultaneously, consistent with a layered IP strategy that raises the litigation risk and cost for any single ANDA filer. When a patent holder holds overlapping composition, formulation, and method-of-use patents on the same active, early settlement before claim construction becomes the rational path for a generic challenger of moderate scale.
Validity concessions in consent judgments have broad defensive value
Aurobindo’s formal acknowledgment of validity and enforceability is entered on the public court docket and cited in the FDA’s consent decree register. While not collateral estoppel against other ANDA filers, it creates reputational and practical weight. IP counsel advising subsequent ANDA applicants on these patents should account for the public record of this concession when assessing challenge viability.
License Agreement terms determine the real commercial outcome
The consent judgment’s commercial significance depends almost entirely on the undisclosed License Agreement — specifically, the authorised launch date and royalty structure. Patent teams monitoring GALAFOLD market exclusivity should track FDA Orange Book listing changes and any 30-month stay expirations for other pending ANDAs as proxies for the licensed entry window Amicus has granted Aurobindo.
Delaware consent decree triggers FDA approval pathway immediately
Paragraph 9 of the consent judgment explicitly invokes 21 U.S.C. § 355(j)(5)(B)(iii)(I)(bb), meaning FDA may grant final approval of Aurobindo’s ANDA immediately upon entry of the judgment. This regulatory trigger is a deliberate drafting choice — it suggests the License Agreement likely contains a specific launch date or condition precedent rather than leaving Aurobindo waiting on further regulatory action.
Amicus v Aurobindo — key questions answered
Amicus asserted three patents: US12042489B2, US12109205B2, and US12042490B2. All three cover aspects of migalastat (GALAFOLD), a pharmacological chaperone therapy for Fabry disease. Infringement was alleged under 35 U.S.C. § 271(e)(2) based on Aurobindo’s submission of ANDA No. 217786 to the FDA.
Aurobindo acknowledged that the three asserted patents are valid and enforceable and that it infringed them under 35 U.S.C. § 271(e)(2). Aurobindo accepted a permanent injunction barring it from manufacturing, selling, importing, or distributing generic migalastat under ANDA No. 217786 without a licence from Amicus. A separate, non-public License Agreement governs any authorised future market entry.
Not directly — Aurobindo’s validity acknowledgment is not legally binding (collateral estoppel) against other ANDA filers. However, it creates a public record that the patents were not challenged to a merits finding, which may inform other generic companies’ risk assessments and litigation strategy when evaluating challenges to the same migalastat patent portfolio.
Potentially yes, under the License Agreement executed alongside the consent judgment. Paragraph 9 of the consent judgment invokes a provision allowing FDA to grant final approval of ANDA No. 217786 immediately upon entry of the judgment. The specific commercial launch date and royalty terms are contained in the non-public License Agreement and are not disclosed on the court docket.
In this context, dismissal without prejudice does not reflect weakness or uncertainty in Amicus’s claims. It is standard Hatch-Waxman practice where the operative obligations — the injunction and license — are captured in the consent judgment itself rather than a merits ruling. The court retained jurisdiction, so Amicus can return to enforce the injunction or License Agreement without filing a new lawsuit.
Monitor the migalastat patent estate and ANDA pipeline in real time
Track new ANDA filings, continuation patent publications, and enforcement activity across the GALAFOLD migalastat portfolio with PatSnap Eureka. Run FTO analysis before committing development resources to Fabry disease generic entry.
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