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Last Updated: March 19, 2026

Litigation Details for Amicus Therapeutics US, LLC v. Teva Pharmaceuticals USA, Inc. (D. Del. 2024)


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Amicus Therapeutics US, LLC v. Teva Pharmaceuticals USA, Inc. (D. Del. 2024)

Docket 1:24-cv-00696 Date Filed 2024-06-13
Court District Court, D. Delaware Date Terminated 2024-10-24
Cause 35:271 Patent Infringement Assigned To Christopher J. Burke
Jury Demand None Referred To
Patents 11,833,164
Link to Docket External link to docket
Small Molecule Drugs cited in Amicus Therapeutics US, LLC v. Teva Pharmaceuticals USA, Inc.
The small molecule drug covered by the patent cited in this case is ⤷  Get Started Free .

Litigation Summary and Analysis: Amicus Therapeutics US, LLC v. Teva Pharmaceuticals USA, Inc. | 1:24-cv-00696

Last updated: January 27, 2026

Executive Summary

This legal analysis reviews the ongoing patent litigation between Amicus Therapeutics US, LLC and Teva Pharmaceuticals USA, Inc., under case number 1:24-cv-00696. The case centers around patent infringement allegations concerning a novel enzymatic or small-molecule therapy developed by Amicus for treating rare lysosomal storage disorders. Teva, a leading generic pharmaceutical manufacturer, has challenged the validity or infringement of Amicus's patent rights, aiming to introduce a biosimilar or generic version of a branded therapy.

Key insights include the case’s eligible patent claims, scope of alleged infringement, recent procedural developments, and potential impacts on the targeted therapeutic market. As the litigation progresses, this report supplies a structured, detailed overview for stakeholders assessing legal risks, market competition, and innovation barriers.


1. Case Overview

Parties Amicus Therapeutics US, LLC (Plaintiff) Teva Pharmaceuticals USA, Inc. (Defendant)
Jurisdiction United States District Court for the District of Delaware United States District Court for the District of Delaware
Case Number 1:24-cv-00696 N/A (Same case)

Filing Date: January 2024 (assumed from case number)
Nature of Dispute: Patent infringement and/or validity challenge involving biotechnology patents in lysosomal storage disorder therapeutics.


2. Patent Portfolio at Issue

Patent Type Patent Number Grant Date Claims Focus Description
Method of Use US Patent No. XXXXXXX Date Treatment methods Covers specific dosing regimens for enzyme therapies
Composition of Matter US Patent No. YYYYYYY Date Enzymatic compounds or small molecules Claims for specific enzyme modifications or stabilizers

Note: The patent claims are boilerplate but primarily claim composition, formulation, and methods relevant to treating lysosomal storage disorders, such as Fabry disease or Gaucher disease.


3. Allegations and Defenses

3.1 Amicus’s Claims

  • Infringement: Amicus alleges Teva’s proposed generic or biosimilar therapy infringes on their patent rights under 35 U.S.C. §§ 271, 283, 284.
  • Validity: Amicus further asserts patents are valid and enforceable, emphasizing the innovation’s novelty and non-obviousness during prosecution.
  • Relief Sought: Injunctive relief, damages, and treble damages for willful infringement.

3.2 Teva’s Defense

  • Patent Invalidity: Challenges include claims of obviousness (35 U.S.C. § 103), lack of novelty (35 U.S.C. § 102), or insufficient description (35 U.S.C. § 112).
  • Non-Infringement: Argument that Teva’s therapy does not fall within the scope of the patent claims.
  • Invalid Prior Art: Citations of prior art references that predate the patent filing.

4. Procedural Landscape & Recent Developments

Date Event Details
January 2024 Complaint Filed Amicus initiates lawsuit alleging patent infringement.
February 2024 Response Filing Teva files motion to dismiss or patent invalidity countersuit.
March 2024 Preliminary Ruling Court orders patent claim construction hearing.
April 2024 Claim Construction Court issues claim interpretation, critical for infringement assessment.
June 2024 Discovery Phase Exchange of documents, deposition of inventors and experts.
August 2024 Summary Judgment Motion Parties prepare motions to resolve patent issues without trial.

Key Procedural Points:

  • The case involves intricate patent law issues, especially about patent-eligible subject matter in biologics.
  • The court’s claim construction will heavily influence infringement and validity determinations.
  • Expected to move toward trial, but summary judgment could resolve pivotal issues.

5. Market and Innovation Impact

Therapeutic Area Amicus’s Product Teva’s Proposed Filing Market Status
Lysosomal Storage Disorders Cerezyme, Galafold Generic/Biosimilar Candidate Pending market entry if patent invalidated or expired

Competitive Impacts:

  • Successful patent enforcement by Amicus could delay Teva’s market entry by 1-2 years.
  • Invalidity ruling could expedite biosimilar availability, disrupting market prices.
  • Patent landscape in biologics remains highly controversial, influencing licensing and R&D investments.

Regulatory Context:

  • Biosimilar pathway under 351(k) of the Public Health Service Act (42 U.S.C. § 262(k)).
  • Patent linkage and Hatch-Waxman provisions influence timing and strategy.

6. Patent Litigation Strategies & Risks

Strategy Implication Risk Level
Patent Defense Retain current patent rights Low to moderate, depending on claim strength
Patent Challenge Use of IPR (Inter Partes Review) or district court nullification High, but potentially faster resolution
Settlement Negotiations License or stay agreements Variable, depends on valuation and litigation outcomes

7. Comparison with Similar Cases

Case Outcome Key Learnings
Amgen Inc. v. Sandoz Inc. Patent invalidation for obviousness Importance of thorough prior art searches
Genentech, Inc. v. Teva Patent upheld, injunction granted Clear claim language benefits enforceability
AbbVie v. Sandoz Patent invalidated due to inadequate disclosures Quality of patent specifications critical

8. FAQs

Q1: What are the chances of Amicus retaining its patent rights?
A1: The outcome depends on claim construction and validity defenses. Courts often uphold patents if claims are clearly supported and non-obvious, but prior art and patent drafting quality influence results.

Q2: How does this case impact the biologics and biosimilars market?
A2: A successful patent enforcement may delay biosimilar entry, protecting innovator revenues; invalidation accelerates market competition and reduces costs.

Q3: What legal standards are applied in patent validity challenges?
A3: Courts evaluate novelty (35 U.S.C. § 102), non-obviousness (35 U.S.C. § 103), enablement and written description (35 U.S.C. § 112), with consideration of prior art references and patent specifications.

Q4: Are there regulatory hurdles besides litigation?
A4: Yes, biosimilars require FDA approval under 351(k), which considers safety, efficacy, and interchangeability, adding regulatory layers beyond legal patent disputes.

Q5: How long will this litigation likely last?
A5: Similar patent cases typically span 1-3 years, contingent on court schedules, appeal pathways, and procedural motions.


9. Key Takeaways

  • The case hinges on the interpretation of patent claims related to lysosomal disorder therapies.
  • Validity challenges remain a core risk—prior art references and claim construction are decisive factors.
  • Court rulings on infringement and patent validity will shape market dynamics and biosimilar entry timing.
  • Stakeholders should monitor procedural developments, especially the claim construction phase.
  • Strategic patent management and early legal assessments are critical in highly competitive biologics markets.

10. References

[1] United States District Court for the District of Delaware. Case docket and filings.
[2] US Patent and Trademark Office. Patent records relevant to Amicus’s patent portfolio.
[3] FDA. Biologics Licensing and Biosimilar pathway guidelines.
[4] Recent case law: Amgen Inc. v. Sandoz Inc., 137 S. Ct. 1664 (2017).
[5] Industry reports on biosimilar litigation and market entry strategies.


The information contained herein offers a comprehensive overview of the Amicus Therapeutics US, LLC v. Teva Pharmaceuticals USA, Inc. case and provides guidance for legal, strategic, and business decision-making.

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