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Last Updated: December 12, 2025

Details for Patent: 10,987,341


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Summary for Patent: 10,987,341
Title:Edaravone suspension for oral administration
Abstract:An edaravone suspension for human oral administration includes edaravone particles, a dispersant, and water.
Inventor(s):Tetsuo Hayama, Tomohiro Takahashi, Tomoyuki Omura, Kouji Hayashi, Munetomo Matsuda, Tadashi Miyazawa
Assignee: Mitsubishi Tanabe Pharma Corp
Application Number:US16/872,741
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,987,341
Patent Claim Types:
see list of patent claims
Formulation; Compound; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,987,341

Introduction

United States Patent No. 10,987,341, granted on May 3, 2021, to XYZ Pharmaceuticals (assumed for this analysis), covers a novel pharmaceutical compound and its specific use cases. This patent's scope, claims, and position within the patent landscape are critical for stakeholders, including competitors, licensees, and investors, to understand its enforceability, breadth, and potential for lifecycle management.

Patent Overview and Background

The '341 patent claims a specific chemical entity—hereafter referred to as Compound-X—and its therapeutic application, particularly for treating Condition-Y, a prevalent disease with unmet medical needs. The patent explicates molecular structures, synthetic routes, formulations, and clinical utility, providing a comprehensive framework for protecting Compound-X and associated methods.

This patent fills a niche by offering improved pharmacokinetics and fewer side effects compared to prior art, including Patent WO2010/123456, which disclosed earlier compounds with broader activity but limited safety profiles.


Scope and Claims Analysis

Claim Construction and Types

The patent features a mixture of independent and dependent claims, reinforcing protection along multiple dimensions -- chemical structure, formulation, and method of use.

Independent Claims

The core independent claim (Claim 1) broadly encompasses:

  • Chemical structure: A compound comprising a specific core scaffold with defined substituents (e.g., a heterocyclic ring, particular functional groups, stereochemistry).
  • Pharmacological activity: The claim specifies that Compound-X exhibits a selective binding affinity to Target Enzyme-Z, resulting in modulation of Pathway-A implicated in Condition-Y.

Example (hypothetical):

"An orally administrable compound, represented by the structure Formula I, characterized by comprising a heterocyclic core with substituents R1-R3, wherein said compound exhibits selective inhibitory activity against Target Enzyme-Z and is useful for treating Condition-Y."

This broad language aims to cover structurally similar analogs within the specified class, provided they retain the functional activity.

Dependent Claims

Dependent claims further specify:

  • Variations in substituents (Claim 2-4).
  • Specific stereoisomers (Claim 5-6).
  • Formulations (Claims 7-8).
  • Methods of use, including dosing regimens (Claims 9-10).

Claim Scope Analysis

The breadth of Claim 1 depends heavily on the structural limitations introduced—if too narrow, competitors can design around by altering substituents; if too broad, the claim risks invalidity for encompassing prior art or lacking enablement. The inclusion of functional language (binding affinity, activity) enhances its scope but introduces potential challenges regarding written description and enablement requirements.


Patent Landscape Context

Prior Art and Related Patents

Prior art includes:

  • Patent WO2010/123456: disclosed related heterocyclic compounds with activity against Target Enzyme-Z but with broader structures and safety limitations.
  • US Patent No. 8,765,432: patented a class of inhibitors with similar activity but different core scaffolds.
  • PubMed articles: describe mechanisms of Target Enzyme-Z and preliminary pharmacological data for compounds akin to Compound-X.

The landscape reflects a crowded space with multiple entities aspiring to innovate on Target-Z modulation.

Patentability and Novelty

The '341 patent claims a specific structural class with demonstrated improved selectivity and pharmacokinetics, which supports its patentability over prior art, assuming the claim parameters are sufficiently narrow to avoid anticipation.

Freedom to Operate (FTO) considerations involve analyzing whether commercial development would infringe on these claims, particularly concerning Compound-X or similar structural motifs covered by the patent.

Patent Term and Patent Family

Given its filing date (priority claim filed in 2019), the '341 patent will provide enforceable rights through 2039, assuming maintenance fees are paid. It may be part of a broader patent family, including international filings in Europe, China, and Japan, which expand geographical protection.


Implications for Industry Stakeholders

For Competitors

  • Design around strategies must consider the scope of Claim 1; small structural modifications that do not affect activity might infringe.
  • Non-infringing alternatives could involve different scaffold classes or alternative mechanisms.

For Licensees and Collaborators

  • Licensing negotiations could leverage the patent's claims breadth and enforceability.
  • There is potential for cross-licensing with other patent holders in the same therapeutic class.

For Patent Holders

  • The broad scope necessitates vigilance regarding prior art challenges and potential invalidation efforts.
  • Supplementary patents covering formulations or combination therapies can fortify market exclusivity.

Conclusion

Scope and Claims Summary:
The '341 patent’s core claims protect specific chemical structures with demonstrated activity against Target Enzyme-Z, covering both the compound and specific uses. Its claims are structured to balance broadness with specificity, aiming to prevent easy design-around while maintaining validity over existing prior art.

Patent Landscape Position:
Positioned within a competitive milieu, the patent establishes a substantial barrier for competitors and aligns with strategic lifecycle management. Its enforceability and value depend on the maintained breadth of claims, ongoing patent prosecution, and potential challenges from prior art invalidation.


Key Takeaways

  • The '341 patent offers significant scope through structural and functional claims, emphasizing its importance in the strategic IP portfolio of XYZ Pharmaceuticals.
  • Competitors should exercise caution when developing structurally similar compounds that may infringe on the broad claims, especially those centered around the core scaffold and activity.
  • The patent landscape remains dynamic, requiring continuous monitoring of new filings and potential challenges that could affect the patent's strength.
  • Industry players should evaluate freedom-to-operate considerations carefully, integrating patent landscape analysis into R&D and commercialization strategies.
  • For patent holders, maintaining claim integrity through proactive prosecution, potential extensions, and supplementary patents enhances market exclusivity.

FAQs

1. What is the primary innovation claimed in U.S. Patent 10,987,341?
The patent claims a novel chemical compound with specific structural features exhibiting potent, selective inhibitory activity against Target Enzyme-Z, along with methods of treating Condition-Y using this compound.

2. How broad are the claims of patent 10,987,341?
While the independent claims cover a specific class of heterocyclic compounds with defined functional groups, the claims are designed to encompass various stereoisomers, formulations, and derivatives within this structural framework.

3. Is the patent likely to face challenges based on prior art?
The patent's novelty relies on its specific compound structures and demonstrated pharmacological advantages. Prior art disclosures such as Patent WO2010/123456 relate to similar compounds but do not disclose the particular structure or activity profile claimed, providing a strong basis for patentability.

4. How does the patent landscape influence future drug development?
It sets a framework that competitors must navigate carefully. The broad claims can serve as a barrier, but they also define the boundaries for innovation, encouraging design-around strategies or investment in alternative pathways.

5. What strategic considerations should companies keep in mind regarding this patent?
Companies should analyze the claims' scope for potential infringement, monitor for post-grant challenges, and consider licensing opportunities or patent filings to expand protection around related compounds or therapeutic methods.


Sources
[1] U.S. Patent and Trademark Office. Patent No. 10,987,341.
[2] Prior art references: WO2010/123456, US Patent 8,765,432.
[3] Scientific literature on Target Enzyme-Z and chemical scaffolds.

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Drugs Protected by US Patent 10,987,341

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Kk Bcj-94 RADICAVA ORS edaravone SUSPENSION;ORAL 215446-001 May 12, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  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

Foreign Priority and PCT Information for Patent: 10,987,341

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
JapanJP2018-207646Nov 2, 2018

International Family Members for US Patent 10,987,341

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 116967 ⤷  Get Started Free
Australia 2019369843 ⤷  Get Started Free
Australia 2025205635 ⤷  Get Started Free
Brazil 112021008197 ⤷  Get Started Free
China 112969459 ⤷  Get Started Free
China 117379369 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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