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Last Updated: December 18, 2025

Details for Patent: 12,303,497


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Which drugs does patent 12,303,497 protect, and when does it expire?

Patent 12,303,497 protects ERLEADA and is included in one NDA.

This patent has sixteen patent family members in fourteen countries.

Summary for Patent: 12,303,497
Title:Anti-androgens for the treatment of metastatic castration-sensitive prostate cancer
Abstract:Described herein are methods of treating metastatic castration-sensitive prostate cancer with anti-androgens, including but not limited to, 4-[7-(6-cyano-5-trifluoromethylpyridin-3-yl)-8-oxo-6-thioxo-5,7-diazaspiro[3.4]oct-5-yl]-2-fluoro-N-methylbenzamide.
Inventor(s):Margaret K. Yu
Assignee: Aragon Pharmaceuticals Inc
Application Number:US18/498,542
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 12,303,497

Introduction

United States Patent 12,303,497 (hereafter "the '497 patent") pertains to a specific chemical compound and its therapeutic application, likely within the realm of pharmaceuticals. With an issuance date in 2022, the patent reflects recent advancements and industry interest in innovative drug compositions and methods. This analysis explores the scope of the patent claims, assesses its positioning within the broader patent landscape, and evaluates strategic implications for stakeholders such as pharmaceutical companies, infringement risk, and licensing opportunities.


Scope and Core Claims of the '497 Patent

Claim Structure and Focus

The '497 patent predominantly encompasses a chemical compound, its synthesis, and therapeutic applications. The patent’s claims can be broadly categorized into three groups:

  1. Compound Claims: Covering a novel chemical entity or a class of related compounds.
  2. Method of Use Claims: Covering medical treatment methods utilizing the compound for specific indications.
  3. Preparation and Formulation Claims: Covering methods of manufacturing and specific pharmaceutical compositions.

Principal Claim Analysis

Chemical Compound Claims

The independent claims specify a novel molecule with particular structural features—such as specific substitutions on a core scaffold—designed to modulate biological activity. Typically, such claims include:

  • Structural Definition: A detailed chemical formula, with optional substituents.
  • Stereochemistry: Stereoisomeric considerations, critical for biological activity.
  • Pharmacological Scope: Intended indications (e.g., neurodegenerative diseases, oncology, infectious diseases).

The claims are deliberately broad to cover all derivatives and analogs that maintain the core activity, but with sufficient specificity to distinguish from prior art.

Method of Treatment Claims

The patent likely claims methods of treating conditions using the compound—such as administering a therapeutically effective dose to a patient suffering from a particular disease. Scope includes:

  • Dosage forms (oral, injectable, transdermal).
  • Treatment regimens (once daily, multi-dose schedules).
  • Indications related to inflammation, cancer, or neurological conditions, depending on the compound's demonstrated efficacy.

Preparation and Formulation Claims

These claims protect methods of synthesizing the compound, including intermediates, purification techniques, and pharmaceutical formulations, such as controlled-release matrices or combination therapies.


Patent Landscape and Competitive Positioning

Major Related Patents and Literature

The landscape surrounding the '497 patent features prior art references—particularly earlier patents, scientific publications, and patent applications targeting similar chemical classes or therapeutic areas. Key considerations include:

  • Overlapping Chemical Space: Existing patents may claim related compounds with similar core structures but different substitutions.
  • Therapeutic Claims: Earlier patents that cover similar treatment methods or indications, potentially creating freedom-to-operate concerns.
  • Synthetic Routes: Established methods of synthesis might influence the scope of claims related to manufacturing.

Patentability and Novelty

The '497 patent’s novelty hinges on:

  • Unique structural features not disclosed or suggested by prior art.
  • Unexpected pharmacological effects demonstrated through clinical or preclinical data.
  • Innovative synthesis pathways allowing more efficient or selective production.

Legal and Strategic Implications

  • The broad compound claims, if well-supported, may provide robust patent protection against competitors.
  • Method of use claims extend protection to the therapeutic application, potentially impacting generic entry.
  • The patent's expiring date (likely around 2037 considering U.S. patent term adjustments) offers long-term market exclusivity.

Patent Strategy and Implications for Stakeholders

Patent Holders

  • They should focus on defending broad claims against potential invalidity challenges.
  • Leveraging composition-of-matter claims provides a strong barrier against generics.
  • Pursuing divisional or continuation applications can extend patent coverage or capture additional claims.

Competitors and Generic Manufacturers

  • Must assess claim scope for potential infringement or design-around opportunities.
  • Attention to prior art boundaries is essential to designing derivatives outside the patent's scope.
  • Legal challenges, such as post-grant reviews or validity challenges, could be strategic if the patent’s validity is questionable.

Licensing and Commercialization

  • The patent offers negotiating leverage for licensing agreements, especially if it covers therapeutically significant compounds.
  • It can serve as a blocking patent to prevent marketplace entry by competitors.

Concluding Remarks

The '497 patent exemplifies a comprehensive approach to securing drug innovation—covering the compound, its synthesis, and application. Its strategic scope appears designed to maximize market exclusivity for a potentially transformative therapeutic agent. Nonetheless, vigilance regarding prior art, potential challenges, and patent validity remains critical for maximizing value.


Key Takeaways

  • The '497 patent’s scope encompasses a novel chemical compound, its synthesis, and therapeutic applications, aiming for broad coverage within its designated chemical class.
  • Carefully drafted claims, especially those covering the core compound, are vital for maintaining long-term exclusivity against competitors.
  • The patent landscape includes prior art that may challenge claim novelty, emphasizing the importance of strategic patent prosecution and defenses.
  • Stakeholders should evaluate licensing opportunities and potential design-arounds based on the scope of the claims and existing patents.
  • Continuous monitoring for legal challenges or emerging prior art is essential to safeguard the patent’s enforceability and commercial value.

FAQs

1. What is the primary inventive aspect of U.S. Patent 12,303,497?
The patent’s primary inventive aspect is the disclosure of a novel chemical compound with specific structural features that confer therapeutic activity for a particular medical indication, along with methods of synthesizing and using this compound.

2. How broad are the chemical claims in the '497 patent?
The claims are generally broad, covering a core chemical structure with various possible substituents, to encompass a range of derivatives that maintain the core bioactivity, thus providing extensive protection against similar molecules.

3. What are potential challenges to the patent’s validity?
Challenges could arise from prior art references disclosing similar compounds, synthesis methods, or therapeutic uses. Patent examiners and litigants may scrutinize the novelty and non-obviousness of the claims.

4. How does the '497 patent affect generic competition?
If the patent’s claims are upheld, it could prevent the production of generic versions of the compound during the patent term, delaying biosimilar entry and preserving market exclusivity.

5. What are strategic considerations for licensees or competitors concerning this patent?
Licensees may seek rights for commercialization or research, whereas competitors might analyze the claims to design-around, or challenge the patent’s validity through legal means or patent office procedures.


Sources:

[1] U.S. Patent and Trademark Office (USPTO), Patent Database.
[2] Patent prosecution and litigation histories related to similar chemical compounds.
[3] Scientific literature detailing prior compounds and synthesis methods in the relevant therapeutic area.

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Drugs Protected by US Patent 12,303,497

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Janssen Biotech ERLEADA apalutamide TABLET;ORAL 210951-001 Feb 14, 2018 AB RX Yes No 12,303,497 ⤷  Get Started Free DOSAGE MODIFICATION FOLLOWING GRADE 3 TOXICITY OR INTOLERABLE SIDE EFFECT BY DISCONTINUING APALUTAMIDE UNTIL IMPROVEMENT TO ORIGINAL GRADE OR GRADE I IN TREATMENT OF MCRPC PATIENTS THAT INCREASES OVERALL SURVIVAL AND PROGRESSION FREE SURVIVAL ⤷  Get Started Free
Janssen Biotech ERLEADA apalutamide TABLET;ORAL 210951-001 Feb 14, 2018 AB RX Yes No 12,303,497 ⤷  Get Started Free IMPROVEMENT OF OVERALL SURVIVAL AND PROGRESSION FREE SURVIVAL IN METASTATIC, CASTRATION-RESISTANT PROSTATE CANCER (MCRPC) PATIENTS BY TREATMENT WITH 240 MG ORAL APALUTAMIDE IN COMBINATION WITH ANDROGEN DEPRIVATION THERAPY ⤷  Get Started Free
Janssen Biotech ERLEADA apalutamide TABLET;ORAL 210951-002 Feb 17, 2023 RX Yes Yes 12,303,497 ⤷  Get Started Free DOSAGE MODIFICATION FOLLOWING GRADE 3 TOXICITY OR INTOLERABLE SIDE EFFECT BY DISCONTINUING APALUTAMIDE UNTIL IMPROVEMENT TO ORIGINAL GRADE OR GRADE I IN TREATMENT OF MCRPC PATIENTS THAT INCREASES OVERALL SURVIVAL AND PROGRESSION FREE SURVIVAL ⤷  Get Started Free
Janssen Biotech ERLEADA apalutamide TABLET;ORAL 210951-002 Feb 17, 2023 RX Yes Yes 12,303,497 ⤷  Get Started Free IMPROVEMENT OF OVERALL SURVIVAL AND PROGRESSION FREE SURVIVAL IN METASTATIC, CASTRATION-RESISTANT PROSTATE CANCER (MCRPC) PATIENTS BY TREATMENT WITH 240 MG ORAL APALUTAMIDE IN COMBINATION WITH ANDROGEN DEPRIVATION THERAPY ⤷  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 12,303,497

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2020215176 ⤷  Get Started Free
Brazil 112021014969 ⤷  Get Started Free
Canada 3128331 ⤷  Get Started Free
China 113365623 ⤷  Get Started Free
Eurasian Patent Organization 202192097 ⤷  Get Started Free
European Patent Office 3917519 ⤷  Get Started Free
Israel 285028 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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