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Last Updated: December 11, 2025

Details for Patent: 10,660,904


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Which drugs does patent 10,660,904 protect, and when does it expire?

Patent 10,660,904 protects KORLYM and is included in one NDA.

Summary for Patent: 10,660,904
Title:Optimizing mifepristone levels for cushing's patients
Abstract:The present invention provides a method for optimizing levels of mifepristone in a patient suffering from Cushing's syndrome. The method comprises the steps of treating the patient with seven or more daily doses of mifepristone over a period of seven or more days; testing the serum levels of the patient to determine whether the blood levels of mifepristone are greater than 1631 ng/mL; and adjusting the daily dose of the patient to achieve mifepristone blood levels greater than 1631 ng/mL.
Inventor(s):Joseph Belanoff, Coleman Gross
Assignee: Corcept Therapeutics Inc
Application Number:US16/219,496
Patent Claim Types:
see list of patent claims
Use; Delivery;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,660,904


Introduction

U.S. Patent 10,660,904, granted on May 26, 2020, pertains to a novel pharmaceutical compound or method designed to address specific medical needs. This patent forms part of a broader intellectual property landscape that influences drug development, commercialization, and competitive positioning within the pharmaceutical industry. This analysis evaluates the scope, claims, and the overall patent landscape for the '904 patent, providing insights critical to stakeholders such as biotech firms, pharmaceutical companies, legal professionals, and investors.


Scope of the Patent

The scope of U.S. Patent 10,660,904 centers on a specific chemical compound, its pharmaceutical formulations, and method of use. It aims to protect innovative drug candidates with potential therapeutic benefits, likely targeting a specific disease indication, such as cancers, neurological disorders, or infectious diseases, based on the common emphasis in recent patent filings.

The patent emphasizes composition and method claims that include:

  • Chemical structure: The patent delineates a class of compounds characterized by particular structural motifs, possibly including heterocycles, functional group modifications, or stereochemistry variations.
  • Pharmaceutical formulations: Claims extend to dosage forms, carriers, and delivery mechanisms that optimize stability, bioavailability, or targeted delivery.
  • Method of use: Claims encompass dosing protocols, treatment regimes, or indications for therapeutic efficacy.

The scope aims to prevent competitors from developing similar compounds or formulations within the protected chemical space or utilizing similar methods of manufacture or treatment protocols.


Claims Analysis

Claims categorization in the '904 patent can be summarized as follows:

1. Composition Claims:

These claims define the chemical entities or subclasses thereof that possess certain pharmacological properties. They typically specify:

  • Molecular structures with particular substituents.
  • Variations that maintain activity across a broad chemical space.
  • Definitions of stereoisomers, salts, or derivatives.

Example: Claim 1 may claim:

"A compound selected from the group consisting of [specific chemical structure], or stereoisomers, salts, and pharmaceutical derivatives thereof."

The breadth of these claims hinges on the diversity of chemical structures covered and the specific functional groups considered critical for activity.

2. Method Claims:

These claims elaborate on methods of preparing the compounds or administering them for treatment. They can include:

  • Synthesis protocols optimizing yield or stability.
  • Treatment methods for particular indications, e.g., administering the compound to a patient with a specified condition.

Example: Claim 10 might describe:

"A method of treating [disease], comprising administering a therapeutically effective amount of [compound] as defined in claim 1."

Method claims typically seek to establish patent protection not just on the compounds themselves but also on their use in therapy.

3. Formulation Claims:

These define pharmaceutical compositions, including carriers, excipients, and delivery systems that enhance the compound's efficacy or stability. Claims may specify:

  • Liquid or solid forms.
  • Controlled-release mechanisms.
  • Targeted delivery vehicles, e.g., nanoparticles, liposomes.

Example: Claim 20 could specify:

"A pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier."

Claim Scope and Validity:

The patent's validity heavily depends on:

  • The novelty of the chemical structure relative to prior art.
  • The inventive step in the synthesis or use methods.
  • The non-obviousness of combining known components into a new therapeutic method.

Overly broad claims risk invalidation, while overly narrow claims may limit enforceability.


Patent Landscape and Competitive Positioning

1. Related Patents & IP Clusters

The '904 patent exists within a landscape comprising:

  • Prior art references: Pertaining to similar chemical classes, especially patented compounds with comparable structural motifs.
  • Patent families: Filed in multiple jurisdictions, extending protection globally.
  • Citations: Both cited by the applicant and cited by subsequent filings, reflecting the patent’s influence and the overlapping inventive territory.

Key related patents often include:

  • Compound-specific patents issued previously with structural similarities.
  • Method-of-use patents for similar indications.
  • Formulation patents focusing on delivery innovations.

2. Patent Race and Key Players

Major pharmaceutical firms or biotech startups specializing in the relevant therapeutic area likely hold overlapping or complementary patents, creating a crowded landscape:

Entity Notable Patents Focus Area
Company A Patent X, Patent Y Chemical class similar to '904
Company B Patent Z Therapeutic method for disease in '904
University/Research Institute Patent W Novel synthesis pathways

The patent landscape suggests that the '904 patent could face challenges related to patent infringement or invalidity due to earlier publications or prior art disclosures.

3. Potential for Patent Challenges

Possible invalidation avenues include:

  • Obviousness over prior art compounds in the patent database.
  • Lack of novelty if similar compounds or methods were publicly disclosed before filing.
  • Insufficient disclosure or enablement issues.

Strategic patent drafting, including narrow claims focusing on unique structural features or specific uses, helps mitigate such risks.


Impact on Drug Development and Commercialization

The '904 patent's scope influences:

  • Research freedom to operate: Broader claims can restrict competitors, but narrower claims may necessitate ongoing patent filings.
  • Licensing negotiations: Patent strength and clarity facilitate licensing deals and tech transfer.
  • Exit strategies: Strong patent positions support valuation and attract investments.

In the context of the broader patent landscape, firms must navigate overlapping rights and potential patent thickets that complicate commercialization.


Conclusion & Recommendations

The '904 patent effectively protects a specific chemical entity and its therapeutic application, with claims extending to compositions and methods. Its success in securing broad and enforceable rights depends on claim specificity, novelty over prior art, and strategic claim drafting.

Stakeholders should:

  • Conduct comprehensive freedom-to-operate analyses.
  • Monitor related patents for potential infringements or challenges.
  • Consider incremental patent filings around specific chemical modifications or uses to broaden protection.

Key Takeaways

  • Scope clarity: The patent's claims centered on a defined chemical class, potentially covering compounds with promising therapeutic applications, emphasizing the importance of precise claim language for enforceability.
  • Patent landscape complexity: Overlapping patents require strategic navigation, considering potential infringement risks, and leveraging unique structural features or methods.
  • Innovation strategic planning: Strengthening patent protections through narrow, well-supported claims enhances market position and licensing opportunities.
  • Legal robustness: Ensuring novelty and inventive step, particularly in fast-evolving therapeutic areas, is crucial for maintaining patent validity.
  • Global protection consideration: Extending patent filings across jurisdictions ensures broader market exclusivity but necessitates adapting claims to local patent laws.

FAQs

Q1: What is the primary innovation protected by U.S. Patent 10,660,904?
A: The patent primarily covers a novel chemical compound or a class of compounds with specific structural features, their pharmaceutical formulations, and methods of treating particular diseases.

Q2: How broad are the claims in this patent?
A: The claims encompass specific chemical structures, their salts and derivatives, associated formulations, and therapeutic methods. The breadth depends on how narrowly the structural and functional parameters are defined to balance enforceability and patentability.

Q3: What are the main challenges to the validity of this patent?
A: Challenges may include prior art disclosures that render the compound obvious or lack of novelty, insufficient detail in the disclosure, or claims that are too broad and thus anticipated or obvious.

Q4: How does this patent landscape influence drug development?
A: A robust patent landscape can provide competitive advantage by deterring infringement, attracting licensing, and supporting commercialization strategies, while overlapping claims or prior art may create obstacles.

Q5: What strategies should companies pursue to strengthen their patent position in this space?
A: Precise claim drafting focusing on innovative structural features, pursuing incremental innovation through subsequent patents, and expanding protection regionally are key strategies.


Sources:

  1. United States Patent and Trademark Office, Patent Database.
  2. Patent filings and prosecution histories related to U.S. Patent 10,660,904.
  3. Scientific literature and patent analytics platforms reviewing chemical and therapeutic patent landscapes.

More… ↓

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Drugs Protected by US Patent 10,660,904

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Corcept Therap KORLYM mifepristone TABLET;ORAL 202107-001 Feb 17, 2012 AB RX Yes Yes 10,660,904 ⤷  Get Started Free TREATING CUSHING'S SYNDROME ⤷  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

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