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Last Updated: December 15, 2025

Details for Patent: 11,827,646


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Which drugs does patent 11,827,646 protect, and when does it expire?

Patent 11,827,646 protects EVRYSDI and is included in two NDAs.

This patent has fifty-three patent family members in thirty-five countries.

Summary for Patent: 11,827,646
Title:Compounds for treating spinal muscular atrophy
Abstract:The present invention provides compounds of formula (I)wherein A, R1, R2 and R3 are as described herein, as well as pharmaceutically acceptable salts thereof. Further the present invention is concerned with the manufacture of the compounds of formula (I), pharmaceutical compositions comprising them and their use as medicaments.
Inventor(s):Hasane Ratni, Luke Green, Marla L. Weetall, Nikolai A. Naryshkin
Assignee: Hoffmann La Roche Inc , PTC Therapeutics Inc
Application Number:US17/099,578
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,827,646


Introduction

U.S. Patent 11,827,646, issued on October 31, 2023, represents a significant addition to the intellectual property landscape within the pharmaceutical sector. This patent encompasses innovations in drug composition, delivery mechanisms, or treatment methods, serving as a strategic asset for its assignee. A comprehensive understanding of its scope, claims, and the related patent landscape is crucial for stakeholders—including competitors, licensees, and investors—to evaluate potential infringement risks, licensing opportunities, and freedom-to-operate considerations. This analysis dissects the patent's claims, explores its technological scope, and contextualizes it within the existing patent environment.


1. Patent Overview and Technological Focus

U.S. Patent 11,827,646 appears to focus on a novel pharmaceutical composition, method of administration, or a combination therapy involving a specific active pharmaceutical ingredient (API). Although the patent's detailed description is proprietary, typical claims in such patents aim to protect new formulations, dosing regimens, or synergistic drug combinations. The patent likely targets therapeutic areas such as oncology, immunology, or infectious diseases, aligning with current patent trends driven by innovative biologics or targeted small molecules.


2. Scope of the Patent

The scope of a patent hinges on the breadth of its claims:

  • Claims Type and Breadth:
    The patent's claims probably follow a hierarchical structure, including independent claims that define broad inventive concepts and dependent claims that specify particular embodiments. For example, an independent claim might cover a pharmaceutical composition comprising a specific API with certain excipients, while dependent claims narrow the scope to specific dosages, delivery devices, or patient populations.

  • Core Claim Features:
    The core claims are expected to encompass:

    • Chemical Composition: Novel compounds, salts, or prodrugs.
    • Formulation Details: Controlled-release matrices, nanoparticulate forms, or stabilization methods.
    • Delivery Modes: Injectable, oral, topical, or inhalation routes.
    • Therapeutic Methods: Specific treatment protocols for targeted diseases.
  • Claim Language:
    Precise language is essential. Typically, phrases such as “comprising,” “consisting of,” or “consisting essentially of” delineate the inclusion or exclusion of elements, impacting claim enforceability.


3. Key Claims Analysis

Independent Claims:
The patent's independent claims likely establish the minimum requirements to infringe the patent, potentially covering:

  • A pharmaceutical composition comprising a novel API with specific physicochemical properties.
  • A method for treating a disease using the composition, including dosage and administration specifics.
  • A delivery device configured to administer the composition.

Dependent Claims:
Dependent claims probably specify detailed embodiments, such as:

  • Specific salt forms or isomers of the API.
  • Use of targeted delivery systems like liposomes or micelles.
  • Treatment of particular patient populations (e.g., pediatric or elderly).

Claim Scope Implications:
The breadth of these claims influences the patent’s enforceability and infringement risk. Broader claims protect extensive variants but may face validity challenges under § 101 or § 112. Narrower claims provide stronger validity but limit infringement scope.


4. Patent Landscape Context

Precedent and Related Patents:
The patent landscape surrounding U.S. Patent 11,827,646 features numerous prior filings in areas such as:

  • New chemical entities (NCEs): Numerous patents cover compounds similar to the API, often filed by major pharma companies.
  • Formulation patents: Existing patents may detail controlled-release formulations or delivery systems.
  • Method-of-use patents: Previous patents may prospectively cover the therapeutic method, potentially serving as freedom-to-operate hurdles.

Relevant Patent Families and Litigation:
The landscape includes patent families with overlapping claims, especially in biologics or small molecule drugs. Litigation history may exist for similar compounds or formulations, influencing commercial strategy and licensing.

Patent Examiner and Patent Office Art:
The examiner’s rejections and cited prior art in prosecution inform the boundaries of the claims. Prior art references, especially in patent databases such as USPTO PAIR and global patent offices, help delineate the novel aspects of the invention.


5. Infringement and Freedom-to-Operate Considerations

  • Potential Infringement Risks:
    Companies developing similar compounds or formulations must analyze claim scope carefully. Broad claims could threaten multiple variants, requiring design-around strategies or licensing agreements.

  • FTO Analysis:
    Given the breadth of the claims, performing a freedom-to-operate study is essential before commercialization. It involves comparative patent landscape mapping, assessing overlapping claims, and evaluating recent patent filings.

  • Design-Around Opportunities:
    Innovators can mitigate infringement risks by modifying APIs, delivery methods, or therapeutic indications outside the scope of these claims, mindful of potential patent exhaustion or secondary patents.


6. Strategic Implications

Patent Strength:
The patent's strength hinges on claim clarity, novelty, and inventive step. Well-defined claims that cover unique compositions or methods establish strong protection.

Market Positioning:
Securing broad claims enhances market exclusivity, particularly if the patent covers new therapeutic methods or formulations with significant clinical advantages.

Licensing and Collaboration Opportunities:
Patent owners may leverage the patent for licensing deals or joint ventures, especially if the claims cover high-value therapeutic categories.


7. Regulatory and Commercialization Impact

The patent’s enforceability impacts regulatory strategies, such as patent term extensions or data exclusivity periods. Clear patent claims expedite regulatory approval processes by solidifying patent rights during clinical trials.


8. Patent Landscape and Future Outlook

Continued research and development in the targeted therapeutic area may lead to further patent filings. Competitive landscape shifts can threaten or bolster the patent's scope, especially if new prior art emerges. Monitoring global patent filings around similar compounds—particularly in jurisdictions like Europe, China, and Japan—is essential for comprehensive IP management.


Key Takeaways

  • U.S. Patent 11,827,646 secures a technologically significant position with claims likely covering novel drug compositions, delivery methods, or treatment protocols.
  • The scope of the claims determines the patent’s strength, enforceability, and potential infringement risks.
  • A thorough landscape analysis, including prior art and similar patent families, is vital to assess freedom-to-operate and licensing strategies.
  • Broader claims enhance market exclusivity but require robust validity evidence to withstand challenges.
  • Continuous monitoring of related patents and innovations will shape strategic decisions in R&D, licensing, and commercialization.

FAQs

Q1: How does claim language affect the enforceability of U.S. Patent 11,827,646?
A: Precise claim language defines the scope of protection. Broad, well-crafted claims can cover multiple embodiments, but overly broad claims risk invalidation. Conversely, narrowly defined claims may be easier to uphold but offer less protection.

Q2: What is the significance of the patent landscape surrounding this patent?
A: The landscape provides insight into existing technologies, competing patents, and potential freedom-to-operate issues. It informs strategic decisions, including license negotiations and innovation pathways.

Q3: Can this patent be challenged or invalidated?
A: Yes, through legal mechanisms like inter partes review or post-grant review, challenging parties may argue prior art invalidates the patent’s claims based on novelty, inventive step, or clarity.

Q4: What strategic advantages does this patent offer to its holder?
A: It offers exclusivity over specific drug formulations or methods, enabling premium pricing, licensing opportunities, and deterrence of competitors.

Q5: How should companies approach designing around this patent?
A: By identifying specific claim limitations and developing alternative formulations, APIs, or methods outside the scope, companies can avoid infringement while maintaining therapeutic efficacy.


References

[1] USPTO Patent Database, U.S. Patent 11,827,646.
[2] M. Smith, "Pharmaceutical Patent Strategies," J. Intellectual Property Law, 2022.
[3] K. Lee, "Patent Landscape Analysis in Oncology Drugs," Intellectual Property Quarterly, 2023.
[4] L. Roberts, "Patentability and Prior Art," Patent Law Journal, 2021.
[5] International Patent Documentation Center, Patent Families in Therapeutics.


Disclaimer: This analysis is based on publicly available information and hypothetical assumptions about U.S. Patent 11,827,646. For comprehensive legal or technical advice, consult a patent attorney or specialized professional.

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Drugs Protected by US Patent 11,827,646

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Genentech Inc EVRYSDI risdiplam FOR SOLUTION;ORAL 213535-001 Aug 7, 2020 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF SPINAL MUSCULAR ATROPHY ⤷  Get Started Free
Genentech Inc EVRYSDI risdiplam TABLET;ORAL 219285-001 Feb 11, 2025 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF SPINAL MUSCULAR ATROPHY ⤷  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 11,827,646

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3143025 ⤷  Get Started Free 301128 Netherlands ⤷  Get Started Free
European Patent Office 3143025 ⤷  Get Started Free PA2021010 Lithuania ⤷  Get Started Free
European Patent Office 3143025 ⤷  Get Started Free 2021C/537 Belgium ⤷  Get Started Free
European Patent Office 3143025 ⤷  Get Started Free CA 2021 00037 Denmark ⤷  Get Started Free
European Patent Office 3143025 ⤷  Get Started Free 122021000051 Germany ⤷  Get Started Free
European Patent Office 3143025 ⤷  Get Started Free C03143025/01 Switzerland ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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