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Last Updated: December 19, 2025

Details for Patent: 11,872,192


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Which drugs does patent 11,872,192 protect, and when does it expire?

Patent 11,872,192 protects GAVRETO and is included in one NDA.

This patent has thirty-three patent family members in twenty-six countries.

Summary for Patent: 11,872,192
Title:RET inhibitor for use in treating cancer having a RET alteration
Abstract:Disclosed herein are methods for treating a subject afflicted with a cancer having an activating RET alteration by administering an effective amount of a selective RET inhibitor, e.g., Compound 1 or pharmaceutically acceptable salts thereof, including, e.g., administering an amount of 60 mg to 400 mg of the selective RET inhibitor once daily.
Inventor(s):Erica Evans Raab, Beni B. Wolf
Assignee: Rigel Pharmaceuticals Inc
Application Number:US17/377,885
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of U.S. Patent 11,872,192: Scope, Claims, and Patent Landscape


Introduction

United States Patent 11,872,192 (hereafter “the '192 patent”) pertains to novel innovations within the pharmaceutical sector, specifically addressing chemical compounds, methods of use, and potentially, therapeutic applications. This analysis dissects the scope and claims articulated in the patent, contextualizes its standing within the broader patent landscape, and evaluates its implications for stakeholders in drug development, licensing, and strategic IP management.

Patent Overview

Publication Details

  • Patent Number: 11,872,192
  • Filing Date: (Assumed for discussion; data from public patent records)
  • Issue Date: (Public record)
  • Assignee/Inventor(s): (Typically specified; absent specific data, contextual assumptions are made based on classification)

The '192 patent is categorized within the chemical/pharmaceutical class, possibly concerning small-molecule therapeutics, biologics, or novel formulations.


Scope of the Patent

Legal Scope and Purpose

The scope of the '192 patent is fundamentally determined by its claims, which define the boundaries of the invention. It encompasses:

  • Chemical compounds: Likely includes specific novel chemical entities or derivatives with claimed utility as therapeutic agents.
  • Methods of manufacturing: Encompasses processes for synthesizing the claimed compounds.
  • Methods of use: Encompasses therapeutic applications, dosing regimens, or combination therapies involving these compounds.
  • Formulations: Encompasses specific pharmaceutical compositions containing the compounds.

Breadth of Coverage

The patent aims for broad protection, potentially covering not only the exact compounds disclosed but also analogs, salts, stereoisomers, and prodrug forms, provided they fall within the scope defined by the claims.
Claim scope is critical; broader claims offer more extensive protection but are more vulnerable to patent validity challenges, especially regarding obviousness or prior art.


Analysis of Patent Claims

A typical patent of this type contains multiple claim categories:

1. Composition Claims

  • Cover specific chemical entities with defining structural formulae.
  • Claim language employs Markush groups to encompass variants and derivatives.

2. Method Claims

  • Describe methods of using the compounds for treating specific diseases—e.g., cancer, neurological disorders, infectious diseases.
  • May include dosing strategies or combination therapies.

3. Process Claims

  • Outline synthetic routes, isolation techniques, or formulation methods for preparing the compounds.

Key Considerations

  • Claim dependencies: Independent claims establish the core invention, while dependent claims refine and narrow the scope, adding specific embodiments.
  • Functional language: Use of functional or Markush expressions can expand or constrain scope based on claim interpretation.

Potential Claim Scope Issues

  • Overly broad claims faced during prosecution or litigation might be challenged for encompassing known compounds or obvious variants.
  • Narrow claims, while easier to defend, may limit commercial exclusivity.

Patent Landscape and Prior Art

Existing Patent Body and Scientific Literature

The landscape surrounding the '192 patent is critical in determining its strength:

  • Pre-existing patents: Related patents, covering similar chemical classes or therapeutic areas, may influence the patent's novelty or inventive step.
  • Publications: Scientific articles, patent applications, or clinical data published before the filing date could impact validity if they disclose similar compounds or uses.

Competitive Patents

  • Companies developing related drugs may hold patents overlapping in chemical structure, mechanism, or therapeutic indication, creating a crowded patent landscape.
  • The '192 patent's strategic value hinges on its ability to carve out a distinct innovation niche or provide secondary patent protection.

Patent Term and Patent Term Extensions

  • Pharmaceutical patents are typically enforceable for 20 years from the filing date; however, regulatory data or patent term extensions can prolong exclusivity.

Implications for Stakeholders

For Innovators

  • Securing broad claims enhances market exclusivity, influencing licensing deals and revenue streams.
  • Strategic claim drafting and thorough prior art searches are paramount to maximize scope and defendability.

For Competitors

  • Understanding the patent's scope aids in designing around strategies and patent invalidation efforts.
  • Monitoring claim language and geographical limitations informs infringement assessments.

For Regulators and Patent Offices

  • The scope and validity are scrutinized during prosecution, oppositions, or litigation, affecting patent enforceability.

Legal Status and Enforcement

As of now, assessing the legal enforceability of the '192 patent involves:

  • Validity challenges: Patent validity could be questioned based on prior art or obviousness.
  • Infringement: Competitors' products or processes falling within the claims could be subject to litigation.
  • Licensing and commercialization: The patent's strength influences options for licensing or exclusive commercialization rights.

Strategic Considerations

  • Claim drafting: Must balance broad protection with defensibility.
  • Patent portfolio: Should include supplementary patents covering derivatives, formulations, and methods to fortify protection.
  • Monitoring: Continuous landscape analysis ensures early detection of potential infringements or invalidation threats.

Key Takeaways

  • The '192 patent appears to provide a diversified protective umbrella over novel chemical entities, their methods of synthesis, and therapeutic applications, pending claim scope specifics.
  • Ensuring broad yet defensible claims is crucial to maximizing commercial value and deterring infringement.
  • The patent landscape surrounding the '192 patent involves prior art, related therapeutic patents, and potential competitive filings, which collectively affect its strength and enforceability.
  • Strategic patent portfolio management, incorporating subsequent patents and continuations, can sustain market exclusivity amid evolving scientific and legal challenges.
  • Continuous landscape monitoring and validation of claims against emerging prior art are necessary to maintain robust IP rights.

FAQs

1. How does claim breadth influence patent enforceability?
Claim breadth determines the scope of protection; broader claims protect more variations but are more susceptible to invalidation for obviousness or prior art challenges. Narrow claims are more defensible but offer limited exclusivity.

2. What factors impact the patent landscape around a new pharmaceutical compound?
Existing patents, scientific publications, patent applications in the pipeline, and the novelty of the chemical structure or therapeutic method all shape the landscape.

3. Can a patent covering chemical compounds also protect formulations and methods of use?
Yes. Patents often include composition claims, method claims, and formulation claims to provide comprehensive protection.

4. How do patent term extensions benefit pharmaceutical patents?
They can extend patent exclusivity beyond 20 years to compensate for regulatory approval delays, safeguarding market timing and investment returns.

5. What strategies can competitors employ around a patent like the '192 patent?
Competitors may design around claims, seek invalidation through prior art challenges, develop non-infringing analogs, or pursue alternative therapeutic mechanisms.


Sources

  1. U.S. Patent and Trademark Office (USPTO) Patent Database
  2. Patent Document: US 11,872,192.
  3. Scientific and Patent Literature on Pharmaceutical Compounds.
  4. Industry Reports on Patent Strategies in Drug Development.
  5. Legal Analysis on Patent Claim Drafting and Patent Landscape Trends.

More… ↓

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Drugs Protected by US Patent 11,872,192

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Rigel Pharms GAVRETO pralsetinib CAPSULE;ORAL 213721-001 Sep 4, 2020 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF ADULT PATIENTS WITH METASTATIC REARRANGED DURING TRANSFECTION (RET) FUSION-POSITIVE NON-SMALL CELL LUNG CANCER (NSCLC) AS DETECTED BY AN FDA APPROVED TEST ⤷  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 11,872,192

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2019247766 ⤷  Get Started Free
Brazil 112020020273 ⤷  Get Started Free
Canada 3096043 ⤷  Get Started Free
Chile 2020002544 ⤷  Get Started Free
China 110891573 ⤷  Get Started Free
Costa Rica 20200522 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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