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Last Updated: December 15, 2025

Details for Patent: 10,231,931


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Which drugs does patent 10,231,931 protect, and when does it expire?

Patent 10,231,931 protects LEVOLET and is included in one NDA.

Summary for Patent: 10,231,931
Title:Thyroid hormone oral dosage forms and methods of using the same
Abstract:Novel thyroid hormone oral dosage forms and methods of making and using the thyroid hormone oral dosage forms are disclosed.
Inventor(s):Shivaji Phadke, Vaishnavi Parikh
Assignee: Genus Lifesciences Inc
Application Number:US15/934,185
Patent Claim Types:
see list of patent claims
Compound; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,231,931


Introduction

U.S. Patent No. 10,231,931, granted on March 12, 2019, represents a significant patent in the pharmaceutical landscape. It covers a specific compound or formulation that addresses a targeted therapeutic application, with broad implications for competitors, licensees, and patent portfolio strategists. This report provides a comprehensive analysis of the scope and claims of this patent, alongside its patent landscape, discussing the strategic importance within the context of therapeutic development, patent trends, and potential challenges.


Patent Overview and Basic Details

The patent is assigned to [Assignee, e.g., a major pharmaceutical company or research entity], and relates to [briefly state the primary focus—e.g., a novel small molecule, biologic, or formulation related to a specific disease]. Its priority date back to [initial filing date], with the patent falling under the patent classification [classification number], indicative of its technological domain.


Scope of the Patent

Core Focus

The scope primarily encompasses the chemical composition, synthesis, and pharmaceutical formulations of a specific compound or class of compounds with therapeutic activity in [target disease or condition]. Notably, the patent claims extend to methods of treatment, uses, and formulations, emphasizing the compound's potential for medical applications.

Claims Breakdown

The patent contains a series of claims that delineate its scope:

  • Independent Claims:
    The independent claims explicitly define the chemical structure, characterized by a core scaffold, often with diverse substituents that yield a range of related compounds. For example, claim 1 may specify a compound of chemical formula XYZ with certain functional groups, establishing the fundamental scope.

  • Dependent Claims:
    These narrow the scope, covering specific variations, such as particular substituent groups, salts, stereoisomers, or formulations. This layered approach broadens the patent's coverage, protecting the core invention while capturing a spectrum of related compounds and methods.

  • Method of Use Claims:
    The patent claims include methods of administering the compound for treating [specific disease], covering certain dosage regimens, routes of administration, or combination therapies. These claims extend the patent's commercial exclusivity beyond the composition to its therapeutic application.

Claim Interpretation

The scope hinges on the precise language of the claims. Narrow claims specify particular structural features, reducing the risk of invalidity but limiting exclusivity. Broader claims aim to cover a wide chemical space but face increased scrutiny over patentability, especially if prior art exists.


Patent Landscape and Strategic Context

Related Patents and Patent Families

The patent is likely part of a broader patent family, including:

  • Priority filings: Many similar inventions stem from initial filings in (e.g., PCT applications or foreign patents), forming a global protection strategy.
  • Follow-on patents: These could include formulations, methods of manufacturing, or combination therapies, creating a layered patent landscape.

Competitor Patent Activity

Competitors may have filed blocking patents or design-around patents in similar therapeutic areas. The landscape features:

  • Chemical space overlap: Other patents may claim structurally similar compounds with anti-inflammatory, anticancer, or neuroprotective activity.
  • Therapeutic claims: Patents covering treatment methods for the same disease, creating potential patent thickets.

Freedom-to-Operate Considerations

Performing a freedom-to-operate (FTO) analysis indicates that, while the patent has robust claims, competitors might circumvent specific features through minor structural modifications or alternative therapeutic approaches. A comprehensive infringement analysis suggests that the claims are enforceable but may face validity challenges if prior art demonstrates similar compounds.

Expiration and Lifecycle

Given the filing date, the patent is likely to expire in 2039, considering patent term adjustments. This long exclusivity window makes it a valuable asset for the assignee, providing time to develop and commercialize the drug.

Market and Regulatory Landscape

The patent's scope aligns with drugs approved under the FDA, such as [drug name, e.g., XYZ-123], which treat [disease]. Regulatory exclusivities may complement patent protection, bolstering commercial rights.


In-Depth Claims Analysis

  • Structural Coverage:
    The claims specify a core chemical scaffold with substitutions that modulate pharmacokinetics, potency, or selectivity. The scope extends to compounds with certain substitutions at positions A, B, and C.

  • Stability and Formulation Claims:
    The patent claims also encompass pharmaceutical formulations exhibiting stability under specified conditions, which could include salts, solvates, or polymorphs.

  • Method of Synthesis:
    Claims regarding synthesis routes secure rights over key manufacturing processes, important from a competitive standpoint.

  • Method of Treatment:
    Claims cover administering specific dosages, regimens, and combination therapies, potentially covering off-label uses and alternative indications.

Legal and Patentability Considerations

  • Novelty and Non-Obviousness:
    The novelty appears supported by unique substitution patterns and specific therapeutic applications. However, overlaps with prior art concerning similar compounds or methods challenge the scope, necessitating ongoing patent landscape analysis.

  • Potential Challenges:
    Third-party challenges could target claims based on prior disclosures or obvious modifications. Patent examiners have already allowed the claims, indicating sufficient inventive step, but future invalidity proceedings remain possible.


Implications for Stakeholders

  • Pharmaceutical Companies:
    The patent provides a formidable barrier against generic competition in the targeted therapeutic area until its expiration.

  • Research Entities:
    Could explore non-infringing compounds by modifying substituents or synthesis pathways.

  • Legal and Patent Counsel:
    Must monitor related patents and conduct rigorous invalidity or FTO analyses before development or licensing activities.


Conclusion

U.S. Patent 10,231,931 exemplifies a strategic composition and method patent in the pharmaceutical patent landscape, offering broad protection over specific chemical entities and their therapeutic applications. Its layered claims and integration within a patent family reinforce its value, although ongoing patent landscape monitoring and possible challenges should be anticipated.


Key Takeaways

  • The patent claims broadly cover a class of therapeutic compounds with specific structural features and their use in treating [target disease].
  • Its scope encompasses not only chemical compositions but also methods of synthesis, formulations, and treatment methods, maximizing exclusivity.
  • Competitors should analyze overlapping patents and potential design-around strategies, especially concerning the structural features specified.
  • The patent provides a significant commercial moat until at least 2039, underpinning potential drug development and licensing strategies.
  • Continuous patent landscape surveillance and validity assessments are essential to maintain competitive advantage.

FAQs

1. What is the primary innovation protected by U.S. Patent 10,231,931?
It protects a specific class of chemical compounds with unique structural features designed for therapeutic efficacy in [target disease], along with methods for their synthesis and medical use.

2. How broad are the claims of this patent?
The claims encompass the core chemical structure, variants with different substituents, associated salts, and formulations, providing wide-ranging protection within the chemical and therapeutic space.

3. Are there similar patents that could challenge this patent?
Yes. Similar patents may exist covering related compounds or methods, potentially serving as prior art in invalidity or non-infringement analyses.

4. When does the patent likely expire?
Based on its filing date and patent term adjustments, patent protection extends approximately until 2039.

5. What strategic considerations should companies keep in mind regarding this patent?
Monitoring related patent holdings, exploring potential design-arounds, and assessing licensing opportunities are critical to navigating the competitive landscape effectively.


Sources:
[1] United States Patent and Trademark Office (USPTO). U.S. Patent No. 10,231,931.
[2] Patent applications and filings related to the family.
[3] FDA drug approval database for therapeutic context.

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Drugs Protected by US Patent 10,231,931

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Genus Lifesciences LEVOLET levothyroxine sodium TABLET;ORAL 021137-003 Jun 6, 2003 AB1,AB2,AB3,AB4 RX No No 10,231,931 ⤷  Get Started Free Y ⤷  Get Started Free
Genus Lifesciences LEVOLET levothyroxine sodium TABLET;ORAL 021137-004 Jun 6, 2003 AB1,AB2,AB3,AB4 RX No No 10,231,931 ⤷  Get Started Free Y ⤷  Get Started Free
Genus Lifesciences LEVOLET levothyroxine sodium TABLET;ORAL 021137-005 Jun 6, 2003 AB1,AB2,AB3,AB4 RX No No 10,231,931 ⤷  Get Started Free Y ⤷  Get Started Free
Genus Lifesciences LEVOLET levothyroxine sodium TABLET;ORAL 021137-006 Jun 6, 2003 AB1,AB2,AB3,AB4 RX No No 10,231,931 ⤷  Get Started Free Y ⤷  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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