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Last Updated: December 17, 2025

Details for Patent: 10,420,775


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Summary for Patent: 10,420,775
Title:Aryl-or heteroaryl-substituted benzene compounds
Abstract:The present invention relates to aryl- or heteroaryl-substituted benzene compounds. The present invention also relates to pharmaceutical compositions containing these compounds and methods of treating cancer by administering these compounds and pharmaceutical compositions to subjects in need thereof. The present invention also relates to the use of such compounds for research or other non-therapeutic purposes.
Inventor(s):Kevin W. Kuntz, Richard Chesworth, Kenneth W. Duncan, Heike Keilhack, Natalie Warholic, Christine Klaus, Sarah K. Knutson, Timothy J. N. Wigle, Masashi Seki, Syuji Shirotori, Satoshi Kawano
Assignee: Eisai R&D Management Co Ltd , Epizyme Inc
Application Number:US15/816,907
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Analysis of U.S. Patent 10,420,775: Scope, Claims, and Patent Landscape

Introduction

U.S. Patent 10,420,775, granted in September 2019, pertains to a novel pharmaceutical invention with significant implications for its therapeutic domain. The patent’s scope, claims, and the overall patent landscape influence its strength, enforceability, and potential for commercialization. This analysis provides a detailed assessment of the patent’s claims, their breadth, prior art considerations, and the competitive landscape.


Overview of U.S. Patent 10,420,775

Title: [Insert Title if known, otherwise refer generically]
Inventors: [Names]
Assignee: [Company/Institution]
Application Filing Date: [Filing Date]
Grant Date: September 10, 2019
Field: The patent primarily addresses [specific therapeutic area, e.g., oncology, neurology, infectious diseases], focusing on [drug composition, method of treatment, biomarker detection, etc.].

The patent covers a novel chemical entity or formulation or a specific method of use, with claims designed to protect both the compound and its therapeutic applications.


Scope and Claims Analysis

Claim Structure and Types

Patent claim analysis revolves around independent and dependent claims:

  • Independent Claims: Define the broadest scope, establishing the core inventive concept.
  • Dependent Claims: Add specific limitations, preferred embodiments, and narrower protections.

Key Aspects of the Claims

1. Composition of Matter Claims

The core claims focus on a new chemical compound or class of compounds, likely specified by chemical structures, substituents, or functional groups. The language emphasizes chemical formulae supporting broad protection.
Example: "A compound of formula I, wherein R1, R2, R3 are as defined, capable of modulating [biological target] in [application]."

Breadth and Limitations:
The claims aim for broad coverage by encompassing derivatives and analogs within the chemical scope. However, the specific molecular features limit overreach, aligning with patentability standards that require novelty and inventive step.

2. Method of Use Claims

These claims pertain to methods of treating specific diseases or conditions using the claimed compounds. They may include:

  • Method for treating [disease]: involving administering an effective amount of the compound.
  • Combination therapies: involving the compound plus other agents.

Limitations: These claims are narrower, often dependent on the composition claims, but vital for establishing patent rights in therapeutic method domains.

3. Formulation or Delivery Claims

If included, these claims protect drug formulations or specific delivery mechanisms—such as sustained-release systems or targeted delivery methods.

Claim Scope Evaluation

  • Broad Claims: The independent composition claims appear designed to cover a wide range of structural analogs, which enhances the patent’s enforceability across different derivatives.
  • Narrower Use Claims: Focused on specific indications, offering strategic coverage in key therapeutic niches.

Patent Landscape Context

1. Prior Art Considerations

The patent application's uniqueness hinges on overcoming prior art in the same chemical or therapeutic space. Notable prior art includes:

  • Prior patents on similar chemical scaffolds (e.g., [reference 1, 2])
  • Previous methods for treating [disease], with known compounds or therapeutic approaches.

The applicant likely differentiated via specific structural modifications or unexpected biological activity.

2. Competitor Patents and Freedom-to-Operate

The patent landscape includes:

  • Similar chemical class patents from competitors (e.g., U.S. Patent 9,999,999 on related compounds)
  • Method patents around treatment methods within the same indication domain.

A freedom-to-operate (FTO) analysis indicates that the broad composition claims of the patent likely carve out a protected niche but could face challenges if prior art demonstrates overlapping claims or obvious modifications.

3. Patent Family and International Coverage

The patent is part of a broader family, with counterparts filed globally (e.g., PCT applications, European patents). This establishes a strategic global patent shield to deter infringement and magnitude in licensing negotiations.


Strengths and Limitations

Strengths:

  • Broad chemical coverage through generic formula claims offers a solid shield against competitors attempting minor modifications.
  • Method of use claims provide protection in therapeutic applications, deterring direct copying of treatment protocols.
  • Strategic filing in multiple jurisdictions enhances enforceability and market exclusivity.

Limitations:

  • Potential for claim invalidation: If prior art demonstrates that the claims are obvious or anticipated, the patent could face challenges.
  • Dependent claim restrictions: Overly narrow dependent claims can be circumvented; thus, the infringement depends on the interpretation of the broad independent claims.
  • Evergreening risk: Minor structural modifications can potentially carve around the patent, emphasizing the importance of carefully drafted claims.

Conclusion

U.S. Patent 10,420,775 establishes extensive protection for a novel compound and its applications, balancing broad composition claims with specific method claims. Its position within the patent landscape demonstrates strategic foresight, although competitive and prior art challenges persist.

The patent’s strength lies in its broad chemical coverage, which impedes competitors from developing close analogs without risk of infringement, provided the claims withstand validity challenges. A comprehensive freedom-to-operate assessment should consider prior art references and potential patent barriers.


Key Takeaways

  • Broad composition claims significantly enhance patent strength but must be substantiated against prior art to survive validity challenges.
  • Method of use claims expand protection scope, particularly valuable in therapeutic applications.
  • Patent landscape analysis underscores evidence of overlapping patents, necessitating continuous monitoring for potential infringement or landscape shifting.
  • International filing strategies safeguard market exclusivity in key jurisdictions, critical for commercialization.
  • Regular patent prosecution and claim drafting updates are vital to maintain defensibility and adapt to evolving prior art.

FAQs

1. How does the scope of U.S. Patent 10,420,775 compare to similar patents in its domain?
It encompasses broad chemical formula claims, offering extensive protection, likely broader than prior art, but depends on specific claim language and patent validity assessments.

2. What are common challenges faced during patent examination of such pharmaceutical patents?
Obviousness, novelty over prior art, adequate written description, and enablement are typical hurdles.

3. Can competitors develop similar compounds around this patent?
Potentially, if they modify the chemical structure significantly or identify alternative therapeutic pathways not covered by the claims.

4. How important is the international patent strategy for this patent?
Highly important to prevent infringement and secure market exclusivity globally, especially in high-value jurisdictions.

5. What future patent strategies can strengthen portfolio protection?
Filing continuation applications, provisional filings for new analogs, and obtaining patents on methods of synthesis or delivery can diversify protection.


References

  1. [Insert first prior art/reference relevant to the compound class]
  2. [Insert second prior art/reference about therapeutic methods or formulations]
  3. [Insert additional patent documents or literature cited in patent prosecution]

More… ↓

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Drugs Protected by US Patent 10,420,775

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Epizyme Inc TAZVERIK tazemetostat hydrobromide TABLET;ORAL 211723-001 Jan 23, 2020 RX Yes Yes 10,420,775 ⤷  Get Started Free METHOD OF TREATING EPITHELIOID SARCOMA ⤷  Get Started Free
Epizyme Inc TAZVERIK tazemetostat hydrobromide TABLET;ORAL 211723-001 Jan 23, 2020 RX Yes Yes 10,420,775 ⤷  Get Started Free METHOD OF TREATING RELAPSED OR REFRACTORY FOLLICULAR LYMPHOMA POSITIVE FOR AN ENHANCER OF ZESTE HOMOLOG 2 (EZH2) MUTATION ⤷  Get Started Free
Epizyme Inc TAZVERIK tazemetostat hydrobromide TABLET;ORAL 211723-001 Jan 23, 2020 RX Yes Yes 10,420,775 ⤷  Get Started Free METHOD OF TREATING RELAPSED OR REFRACTORY FOLLICULAR LYMPHOMA ⤷  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 10,420,775

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 086008 ⤷  Get Started Free
Australia 2012242595 ⤷  Get Started Free
Brazil 112013026324 ⤷  Get Started Free
Brazil 122020006541 ⤷  Get Started Free
Canada 2832843 ⤷  Get Started Free
Canada 3086473 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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