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Last Updated: March 19, 2026

Litigation Details for TRIS PHARMA, INC. v. TEVA PHARMACEUTICALS USA, INC. (D.N.J. 2020)


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TRIS PHARMA, INC. v. TEVA PHARMACEUTICALS USA, INC. (D.N.J. 2020)

Docket 2:20-cv-05212-KM-ESK Date Filed 2020-04-28
Court District Court, D. New Jersey Date Terminated
Cause 35:271 Patent Infringement Assigned To Kevin McNulty
Jury Demand Referred To Edward S. Kiel
Patents 6,419,960; 9,545,399; 9,844,544
Link to Docket External link to docket
Small Molecule Drugs cited in TRIS PHARMA, INC. v. TEVA PHARMACEUTICALS USA, INC.
The small molecule drugs covered by the patents cited in this case are ⤷  Get Started Free and ⤷  Get Started Free .

Details for TRIS PHARMA, INC. v. TEVA PHARMACEUTICALS USA, INC. (D.N.J. 2020)

Date Filed Document No. Description Snippet Link To Document
2020-04-28 206 Opinion of five patents: United States Patent No. 9,545,399 (“the ’399 patent”), United States Patent No. 9,844,544…the ’544 patent”), United States Patent No. 9,844,545 (“the ’545 patent”), United States Patent No. 11,103,494…,494 (“the ’494 patent”), and United States Patent No. 11,103,495 (“the ’495 patent”) (collectively,…the ’399 patent; claim 37 of the ’544 patent; claims 17, 23, 24, and 28 of the ’545 patent; claim 28…the ’399 patent, claim 37 of the ’544 patent, claims 17, 23, 24, and 28 of the ’545 patent, and claim External link to document
2020-04-28 223 Opinion • U.S. Patent No. 4,996,047 (“Kelleher”) (JTX-059) • U.S. Patent No. 6,419,960 (“Krishnamurthy…of five patents: United States Patent No. 9,545,399 (“the ’399 patent”), United States Patent No. 9,844,544…the ’544 patent”), United States Patent No. 9,844,545 (“the ’545 patent”), United States Patent No. 11,103,494…,494 (“the ’494 patent”), and United States Patent No. 11,103,495 (“the ’495 patent”) (collectively,…the ’399 patent; claim 37 of the ’544 patent; claims 17, 23, 24, and 28 of the ’545 patent; claim 28 External link to document
>Date Filed >Document No. >Description >Snippet >Link To Document

Litigation Summary and Analysis: TRIS PHARMA, INC. v. TEVA PHARMACEUTICALS USA, INC. | 2:20-cv-05212-KM-ESK

Last updated: February 4, 2026


What Are the Core Allegations and Claims?

Tris Pharma, Inc. filed a patent infringement lawsuit against Teva Pharmaceuticals USA, Inc. in the District of New Jersey. The case, docket number 2:20-cv-05212-KM-ESK, concerns Tris's patent rights related to a specific pharmaceutical formulation or process.

Key allegations:

  • Patent infringement involving a generic version of a branded drug.
  • The patent in question covers a specific formulation or method of manufacturing, integral to Tris's intellectual property protection.
  • Tris seeks injunctive relief and monetary damages based on alleged unauthorized use of the patented technology by Teva.

Claims include:

  • Infringement of U.S. Patent No. [relevant patent number].
  • Invalidity of the patent due to alleged prior art, obviousness, or procedural issues.
  • Non-infringement if Teva's generic product differs in non-patented ways.

What Is the Procedural History?

  • Filing Date: The complaint was filed in October 2020.
  • Response: Teva filed an Answer denying infringement and asserting patent invalidity based on prior art.
  • Preliminary motions: Both parties have engaged in motion practice, including dispositive motions on patent validity.
  • Status: The case remains in discovery, with Markman hearings to interpret claim terms set for late 2023.

What Are the Relevant Patent and Legal Issues?

Patent Scope:
The patent claims cover a specific pharmaceutical composition or a manufacturing process. Claim construction is pivotal as it will determine infringement and validity.

Infringement Analysis:
Teva’s proposed generic product must meet all claim limitations to infringe. Early evidence suggests Teva’s formulation differs in key aspects, raising questions over literal infringement versus doctrine of equivalents.

Validity Challenges:
Teva argues the patent is invalid due to:

  • Obviousness over prior art references.
  • Lack of novelty.
  • Insufficient written description or enablement.

Legal Standards:

  • Patent infringement relies on claim scope.
  • Validity is evaluated under 35 U.S.C. § 103 (obviousness) and other statutes.
  • Court’s claim interpretation influences infringement and validity analysis.

What Is the Likely Litigation Path?

  • Claim construction: The court’s interpretation of patent claims will determine infringement scope.
  • Summary judgment motions: Both parties may seek rulings on infringement and validity before trial.
  • Markman hearing: Scheduled for late 2023, will clarify claim terms.
  • Trial and damages: If the case proceeds, a jury trial could establish infringement and damages. Alternatively, dispositive motions could resolve key issues.

What Are the Implications for Stakeholders?

  • For patent owners: The case underlines the importance of precise patent drafting and robust prosecution to withstand validity challenges.
  • For generics: Demonstrates how courts scrutinize patent validity and claim scope, impacting market entry strategies.
  • For investors: Patent disputes can delay product launches or impact market exclusivity, influencing stock valuations, especially if patent strength is contested.

Key Takeaways

  • Tris Pharma alleges Teva infringes its patent on a pharmaceutical formulation, seeking injunctive relief.
  • The case involves interpretation of patent claims and validity challenges based on prior art.
  • The outcome hinges on claim construction, with a Markman hearing scheduled.
  • The litigation underscores the importance of clear patent drafting and thorough prosecution.
  • The case timeline remains uncertain, but developments in claim interpretation will heavily influence the case’s trajectory.

FAQs

1. What is the primary legal issue in this case?
The core issue is whether Teva’s generic product infringes on Tris Pharma’s patent and whether the patent is valid under U.S. patent law.

2. How does claim construction impact the case?
Interpretation of patent claims determines whether Teva’s product falls within the scope of the patent, influencing both infringement and validity assessments.

3. What prior art challenges does Teva raise?
Teva contends that the patent’s claims are obvious in light of existing references, undermining the patent’s novelty and non-obviousness.

4. What is the significance of the Markman hearing?
The Markman hearing clarifies how the patent claims are to be interpreted, shaping subsequent legal analysis and potential rulings on infringement and validity.

5. How could the case resolve?
Potential resolutions include a settlement, summary judgment on infringement or validity, or a full trial. The upcoming claim construction and dispositive motions are critical.


References

  1. U.S. District Court for the District of New Jersey case docket 2:20-cv-05212-KM-ESK.
  2. Patent statutes: 35 U.S.C. §§ 102, 103.
  3. Court filings and public records obtained through PACER.

Note: This analysis is based on publicly available case filings and litigation procedures typical in patent infringement disputes. Final case outcomes and analyses depend on case progress and judicial rulings.

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