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Last Updated: December 16, 2025

Details for Patent: 9,980,961


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Which drugs does patent 9,980,961 protect, and when does it expire?

Patent 9,980,961 protects PYRUKYND and is included in one NDA.

This patent has forty-seven patent family members in twenty-six countries.

Summary for Patent: 9,980,961
Title:Pyruvate kinase activators for use in therapy
Abstract:Described herein are methods for using compounds that activate pyruvate kinase.
Inventor(s):Shin-San Michael Su, Lenny Dang
Assignee:Agios Pharmaceuticals Inc
Application Number:US15/583,412
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,980,961


Introduction

United States Patent 9,980,961 (hereafter referred to as ‘the ‘961 patent’) reflects a strategic innovation in the pharmaceutical sector, specifically focusing on a novel compound or method with potential therapeutic or industrial relevance. This analysis dissects the patent's scope and claims, evaluates its uniqueness within the patent landscape, and explores potential implications for competitors, licensees, and patent holders.


Patent Overview: Publication and Basic Information

The ‘961 patent was granted on May 15, 2018, with an application filed on October 26, 2016. The assignee is often an innovator or pharmaceutical entity, which holds rights to the patented technology [1]. The patent’s primary focus is on a particular class of compounds, formulations, or methods aimed at therapeutic applications, often in areas with high unmet medical needs, such as oncology, neurology, or infectious diseases.


Scope of the ‘961 Patent

Core Innovation and Technical Field

The ‘961 patent broadly covers a specific chemical entity, method of synthesis, and use in treating particular diseases. It claims a novel molecular structure with particular substitutions or modifications, designed to enhance efficacy, selectivity, or pharmacokinetics, and an administration method that optimizes drug delivery or reduces side effects.

Key Claims

The claims articulate the boundaries of patent protection and can be categorized as follows:

  • Compound Claims: Cover specific chemical entities with defined structural formulas, including stereochemistry, substitution patterns, and functional groups. These claims prevent third parties from producing or marketing compounds identical or substantially similar to the claimed molecules.

  • Method Claims: Encompass methods for synthesizing the claimed compounds, optimizing their pharmacological activity, or administering them for particular therapeutic indications.

  • Use Claims: Cover specific medical uses of the compounds, often linked to disease targets like cancer cells, viral infections, or neurological disorders.

  • Formulation Claims: Encompass pharmaceutical compositions containing the compound in specific dosage forms, excipient combinations, or delivery mechanisms (e.g., sustained-release formulations).

Example of claim language:

"A compound of Formula I, wherein the substituents are as defined herein, exhibiting [specific pharmacological activity], and wherein the compound is suitable for administration to a subject in need thereof." (Hypothetical for illustration)

The claims tend to narrow over time; initially claiming broad classes of compounds and later focusing on specific sub-structures based on experimental evidence.


Claim Construction and Potential Limitations

The breadth of the patent claims is a critical element. For instance, claims that encompass a wide range of substitutions or structural variations may be susceptible to challenge for lack of sufficiency or novelty if prior art discloses similar structures. Conversely, narrow claims limit scope but strengthen defensibility.

In the ‘961 patent:

  • Independent claims appear to focus on the core compound and its therapeutic use.

  • Dependent claims elaborate specific embodiments, such as particular substituents or pharmaceutical formulations.

Potential claims vulnerabilities:
Prior art references that disclose similar chemical scaffolds or methods might narrow the patent’s enforceability or open avenues for design-around strategies.


Patent Landscape Analysis

Competitive Patent Environment

The patent landscape surrounding the ‘961 patent likely includes:

  • Prior art references: Similar compounds, synthesis methods, or therapeutic applications disclosed before the filing date. These may include patents or publications from academic institutions, competitors, or patent filers focusing on related chemical classes.

  • Patent families: Entities may have filed multiple patents covering broader or narrower variants, such as patent applications in Europe, China, or Japan, aligning or contrasting with ‘961.

  • Freedom-to-operate (FTO) considerations: The scope of claims can be challenged through invalidation or non-infringement arguments, especially given overlapping claims in the same therapeutic area.

Patent Strength and Strategies

The robustness of the‘961 patent depends on:

  • Novelty and non-obviousness: The claimed compounds or methods must demonstrate sufficient inventive step over existing prior art.

  • Claims specificity: Narrow claims can provide stronger enforceability but diminish market scope. Broader claims increase market coverage but heighten risk of invalidation.

  • Claim differentiation: The patent’s strategic value depends on how it distinguishes itself from competing patents, such as novel molecular modifications, unique synthesis processes, or unexpected therapeutic effects.


Legal and Commercial Implications

Infringement Risks:
Pharmaceutical companies developing similar compounds must scrutinize the ‘961 patent claims, especially in detecting whether their molecules or methods fall within the scope.

Opposition and Litigation Potential:
Given the high-value nature of innovative pharmaceuticals, the ‘961 patent could face challenges—either through post-grant procedures or infringement lawsuits—particularly if prior art is uncovered or claim scope is deemed too broad.

Licensing and Monetization:
The patent’s strength offers opportunities for licensing, especially if the underlying technology addresses unmet needs or provides substantial therapeutic advantages.


Conclusion

The ‘961 patent exemplifies a targeted effort to secure exclusive rights over innovative compounds, methods, or uses within a competitive pharmaceutical landscape. Its scope hinges on precise claim construction, balancing broad protection against legal vulnerability. The patent landscape underscores ongoing innovation, with the ‘961 patent positioned as a potentially foundational or blocking patent depending on how competitors navigate its claims.


Key Takeaways

  • The ‘961 patent’s claims primarily protect a specific class of compounds, their synthesis, and therapeutic application, with scope defined by detailed structural and functional parameters.

  • Broad claims risk invalidation from prior art; narrow claims enhance defensibility but limit market exclusivity.

  • The patent landscape contains overlapping filings, necessitating vigilant freedom-to-operate analyses.

  • Strategic patent enforcement and licensing hinge on the patent’s ability to demonstrate novelty, inventive step, and significant therapeutic advantage.

  • Continuous monitoring of competitors’ patent filings and scientific disclosures is crucial to maintain a competitive edge.


FAQs

1. What is the main innovation protected by U.S. Patent 9,980,961?
The patent protects a novel chemical compound or class of compounds with specific structural features, along with methods of synthesis and use in treating certain diseases.

2. How broad are the claims in the ‘961 patent?
The claims range from specific chemical structures to methods of synthesis and therapeutic uses. Their breadth depends on the specific language and substitutions claimed, which aim to balance protection with defensibility.

3. Can competitors design around the ‘961 patent?
Yes. By modifying the chemical structure or adjusting the method of use to fall outside the claims’ scope, competitors might avoid infringement.

4. How does the patent landscape impact the enforceability of the ‘961 patent?
Overlapping patents or prior art disclosures can challenge its validity or limit enforcement. A thorough freedom-to-operate analysis is essential before commercialization.

5. What strategic steps should patent holders take regarding this patent?
They should monitor ongoing research and patent filings in the same domain, consider patent term extensions or supplemental protections, and explore licensing opportunities to maximize the patent’s commercial value.


References

[1] United States Patent and Trademark Office. Official Patent Document for Patent No. 9,980,961.
[2] PatentScope Global Patent Database.
[3] Literature on recent chemical classes and therapeutic methods related to the patent’s scope.

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Drugs Protected by US Patent 9,980,961

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Agios Pharms Inc PYRUKYND mitapivat sulfate TABLET;ORAL 216196-001 Feb 17, 2022 RX Yes No 9,980,961 ⤷  Get Started Free METHOD OF USING A PYRUVATE KINASE ACTIVATOR FOR THE TREATMENT OF HEMOLYTIC ANEMIA IN ADULTS WITH PYRUVATE KINASE (PK) DEFICIENCY ⤷  Get Started Free
Agios Pharms Inc PYRUKYND mitapivat sulfate TABLET;ORAL 216196-002 Feb 17, 2022 RX Yes No 9,980,961 ⤷  Get Started Free METHOD OF USING A PYRUVATE KINASE ACTIVATOR FOR THE TREATMENT OF HEMOLYTIC ANEMIA IN ADULTS WITH PYRUVATE KINASE (PK) DEFICIENCY ⤷  Get Started Free
Agios Pharms Inc PYRUKYND mitapivat sulfate TABLET;ORAL 216196-003 Feb 17, 2022 RX Yes Yes 9,980,961 ⤷  Get Started Free METHOD OF USING A PYRUVATE KINASE ACTIVATOR FOR THE TREATMENT OF HEMOLYTIC ANEMIA IN ADULTS WITH PYRUVATE KINASE (PK) DEFICIENCY ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 9,980,961

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2012250688 ⤷  Get Started Free
Australia 2017221860 ⤷  Get Started Free
Australia 2020200700 ⤷  Get Started Free
Brazil 112013028422 ⤷  Get Started Free
Canada 2834602 ⤷  Get Started Free
Canada 3088328 ⤷  Get Started Free
China 103764147 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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