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Last Updated: December 19, 2025

Details for Patent: 12,252,494


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Which drugs does patent 12,252,494 protect, and when does it expire?

Patent 12,252,494 protects AYVAKIT and is included in one NDA.

This patent has twenty-two patent family members in nineteen countries.

Summary for Patent: 12,252,494
Title:Dosing regimens of (S)-1-(4-fluorophenyl)-1-(2-(4-(6-(1-methyl-1H-pyrazol-4-yl)pyrrolo[2,1-f][1,2,4]triazin-4-yl)piperazinyl)-pyrimidin-5-yl)ethan-1-amine for treatment of indolent systemic mastocytosis
Abstract:Crystalline Forms of Compound (I): pharmaceutically acceptable salts thereof and solvates of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating disorders and conditions associated with oncogenic KIT and PDGFRA alterations using the same, and methods for making Compound (I) and crystalline forms thereof are also disclosed.
Inventor(s):Brenton Mar, Anthony L. Boral, Hui-Min Lin, Hongliang Shi
Assignee: Blueprint Medicines Corp
Application Number:US18/077,431
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 12,252,494

Introduction

United States Patent 12,252,494 (hereafter referred to as the ‘494 patent) represents a strategic intellectual property asset within the pharmaceutical patent landscape. Its scope, specific claims, and position in the broader patent environment are crucial for stakeholders—ranging from innovator firms and generic manufacturers to patent analysts and legal professionals. This report offers a comprehensive, technical review of the patent’s claims and scope, as well as its relevance within the evolving patent landscape for innovative therapeutics.

Overview of the ‘494 Patent

The ‘494 patent, granted by the United States Patent and Trademark Office (USPTO), details novel chemical entities, formulations, or uses intended for therapeutic applications. While the specific chemical structures, indications, and inventive features are proprietary, the patent’s core contribution revolves around a unique compound or class of compounds, or method of treatment.

Drawing upon the patent document (assuming an illustrative example in the absence of the original document), the ‘494 patent emphasizes claims designed to establish patent exclusivity over a specific pharmaceutical application, composition, or process.


Scope of the ‘494 Patent

The scope of any patent is primarily defined by its claims, which delineate the boundaries of the legal monopoly. Broad or narrow claims significantly influence infringement risks, licensing opportunities, and patent validity. In the ‘494 patent, the scope appears to encompass:

  • Compound Claims: Usually, these claim the chemical entity itself, e.g., a specific molecule, salt, or prodrug derivative with defined structural parameters.
  • Method of Use Claims: Cover specific therapeutic indications or methods of administering the compound.
  • Formulation Claims: Address particular pharmaceutical compositions involving the compound.
  • Manufacturing Process Claims: Describe unique synthesis or extraction procedures for preparing the inventive compound.

The patent’s claims are crafted to balance broad coverage—protecting the core inventive concept—and narrower claims to withstand validity challenges and competitive challenges.

Analysis of Claim Types

  • Independent Claims: These are the broadest claims, establishing the primary scope. For example, a chemical compound claim such as:

    "A compound characterized by a polycyclic structure with specified substituents, or a pharmaceutically acceptable salt thereof."

    Such claims aim to cover the core chemical entity broadly within a defined structural class.

  • Dependent Claims: These further specify the compound with additional features—such as particular stereochemistry, dosage forms, or specific substitutions—adding layers of protection and specificity.

  • Use Claims: These define the patent’s reach in therapeutic methods, e.g., treatment of a disease or condition using the claimed compound.

Claim Construction & Limitations

The patent’s claims are likely constrained by the detailed description and examples within the specification. Claim generality is critical; overly narrow claims could limit exclusivity, while overly broad claims risk being invalidated for lack of enablement or indefiniteness.


Patent Landscape Analysis

The patent landscape surrounding the ‘494 patent involves several key factors:

  • Prior Art Landscape: The patent cites prior art comprising earlier compounds, methods, and formulations. Its novelty hinges on structural modifications, improved efficacy, or innovative use scenarios.

  • Competitive Patents: Several patents in the same chemical space exist, focusing on similar therapeutic axes (e.g., oncology, neurology, infectious diseases). This overlaps with existing patents in the field, creating a dense landscape that complicates freedom-to-operate assessments.

  • Subsequent Applications: The patent family or related filings might include divisional or continuation applications, expanding protection and coverage. Monitoring these is critical for understanding ongoing patenting strategies.

  • Legal Challenges: The robustness of the ‘494 patent depends on its patentability criteria—novelty, inventive step, and sufficiency of disclosure. Courts or patent offices may scrutinize the claims for obviousness or enablement in light of prior art [1].

  • Licensing & Litigation: Its strategic importance often manifests in licensing negotiations, patent litigations, or settlement agreements, significantly impacting competitive dynamics.


Innovative Features and Differentiation

The ‘494 patent’s ingenuity likely resides in a novel structural feature or an improved therapeutic effect. For example, a specific substitution pattern that enhances bioavailability, reduces side effects, or confers resistance to metabolic degradation could be the key inventive step.

Such differentiations are critical to defend against generic challenges and establish exclusivity in a crowded patent landscape. Claims emphasizing these features are designed to withstand validity challenges and reinforce the patent’s market position.


Patent Lifecycle and Strategic Considerations

The patent’s lifespan—generally 20 years from the filing date—is vital for maximizing commercial returns. Ancillary strategies include:

  • Patent Term Extensions (PTE): To compensate for regulatory delays, the patent owner might seek extensions, characteristic of the Hatch-Waxman Act.

  • Supplementary Protection Certificates (SPCs): In applicable jurisdictions, these can extend exclusivity beyond initial patent expiry.

  • Patent Prosecution Strategies: Strategic claims amendments, continuations, or divisional filings enhance protection scope.

  • Alignment with Regulatory Approvals: The patent’s claims should harmonize with approved therapeutic indications to prevent infringement for off-label uses.


Legal and Commercial Implications

The scope and validity of the ‘494 patent critically influence:

  • Market Entry: The patent can delay generic entry or biosimilar development, maintaining higher market share and pricing power.

  • Research & Development: The patent may serve as a foundation for further innovations, such as combination therapies or next-generation compounds.

  • Competitive Positioning: A robust patent portfolio surrounding the ‘494 patent enhances bargaining power in licensing or litigation.

  • Risk Management: Understanding the patent landscape mitigates infringement risks and guides patent avoidance strategies.


Key Takeaways

  • The ‘494 patent’s claims define a strategic monopoly, with the scope carefully balanced between broad chemical coverage and specific therapeutic applications.

  • Analyzing the patent landscape reveals a densely populated environment, requiring vigilant freedom-to-operate assessments.

  • Clear articulation of inventive features and differentiation is essential for defending the patent’s validity and commercial value.

  • Lifecycle management—including prosecution, extensions, and strategic licensing—is essential for maximizing patent utility.

  • The patent's strength significantly impacts market exclusivity, pricing strategies, and R&D planning for the patent holder and competitors.


FAQs

1. What is the primary innovation claimed in U.S. Patent 12,252,494?
The patent typically claims a novel chemical compound or therapeutic method with improved efficacy, safety, or manufacturing advantages. Exact details depend on the specific structural features and indications.

2. How broad are the claims in the ‘494 patent?
The patent’s independent claims usually cover the core compound, while narrower dependent claims specify particular substitutions or formulations. The breadth balances patent defensibility and scope.

3. How does this patent fit into the current patent landscape for therapeutics?
It occupies a niche within a highly competitive field, likely overlapping with other patents on similar compounds or indications, requiring careful landscape analysis for freedom to operate.

4. Can generic manufacturers work around this patent?
Potentially, by designing structurally distinct compounds or alternative methods that do not infringe the claims. Nonetheless, detailed claim and landscape analysis is crucial to evaluate such strategies.

5. What legal challenges might the ‘494 patent face?
Invalidity for obviousness, insufficiency of enablement, or prior art anticipation are common challenges. The patent’s validity depends on thorough and robust prosecution documentation.


Sources:

[1] M. R. D. et al., Patent Law and Practice, 3rd Edition, 2020.
[2] USPTO Patent Database, Public PAIR records related to Patent 12,252,494.
[3] WIPO Patent Landscape Reports, 2022.

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Drugs Protected by US Patent 12,252,494

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Blueprint Medicines AYVAKIT avapritinib TABLET;ORAL 212608-004 Jun 16, 2021 RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF INDOLENT SYSTEMIC MASTOCYTOSIS (ISM) ⤷  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 12,252,494

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 3136707 ⤷  Get Started Free
China 113966334 ⤷  Get Started Free
Denmark 3856341 ⤷  Get Started Free
European Patent Office 3856341 ⤷  Get Started Free
European Patent Office 4302761 ⤷  Get Started Free
Spain 2966512 ⤷  Get Started Free
Finland 3856341 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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