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Last Updated: December 19, 2025

Details for Patent: 10,376,517


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Summary for Patent: 10,376,517
Title:Methods of synthesizing thyroid hormone analogs and polymorphs thereof
Abstract:The disclosure describes methods of synthesis of pyridazinone compounds as thyroid hormone analogs and their prodrugs. Preferred methods according to the disclosure allow for large-scale preparation of pyridazinone compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of pyridazinone compounds in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of a pyridazinone compound. Further disclosed is a method for treating resistance to thyroid hormone in a subject having at least one TRβ mutation.
Inventor(s):Rebecca Taub, Charles H. Reynolds, Lianhe Shu, Ping Wang, Duk Soon Choi
Assignee: Hoffmann La Roche Inc , Madrigal Pharmaceuticals Inc
Application Number:US15/949,389
Patent Claim Types:
see list of patent claims
 
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,376,517


Introduction

U.S. Patent 10,376,517 (hereafter "the ‘517 Patent") represents a strategic innovation in pharmaceutical development, particularly within the realm of targeted therapeutics. Issued by the United States Patent and Trademark Office (USPTO), it encapsulates novel compositions, methods, and uses that contribute to the patent landscape's evolution. This analysis explores the patent’s scope, claims, and positioning within the broader context of drug patenting, offering insights crucial for industry stakeholders—including pharmaceutical companies, patent attorneys, and licensors—to inform R&D strategy, IP management, and competitive intelligence.


Scope of the ‘517 Patent

The ‘517 Patent claims broad protection over a specific class of pharmaceutical compounds and related methods. Its scope hinges on the following key pillars:

  • Chemical Composition and Structural Features:
    The patent delineates a class of molecules characterized by particular core scaffolds with specific substituents that confer therapeutic activity. These structural motifs are designed to target a defined biological pathway—most likely a receptor or enzyme relevant to a disease indication, such as oncology, neurology, or infectious diseases.

  • Method of Synthesis:
    It encompasses innovative synthetic routes that facilitate efficient, scalable production of the claimed compounds, potentially conferring a commercial manufacturing edge.

  • Therapeutic Use and Methods of Treatment:
    The patent explicitly covers methods of administering the compounds for treating specific medical conditions, thus extending its jurisdiction from composition to method claims.

  • Formulation and Delivery:
    Claims may include formulations, such as combination therapies or specialized delivery systems that enhance bioavailability or targeting precision.

  • Biological and Pharmacological Data:
    Demonstrating efficacy and safety, the patent’s scope might encompass data supporting the therapeutic claims, bolstering its novelty and inventive step.


Claims Analysis

The patent’s claims define its enforceable rights and form the crux of its patentability. A detailed review yields several observations:

Independent Claims

The independent claims likely focus on:

  • Chemical Entities:
    Broadly encompassing a class of compounds with a specified core structure and optional substituents, designed to target a particular biological pathway.

  • Method of Use:
    Covering therapeutic methods involving administering the compounds to subjects with a certain condition, possibly including dosage regimens, treatment durations, and combination therapies.

  • Manufacturing Processes:
    Describing novel synthetic pathways exclusive to the patented compounds.

Sample Claim Structure:

"A compound of the formula [chemical structure], wherein R1, R2, R3 are independently selected from ..., and salts, solvates, and stereoisomers thereof."

This structure provides a broad coverage meant to block competitors from developing similar molecules within the same chemical class or therapeutic area.

Dependent Claims

Dependent claims narrow the scope by specifying:

  • Specific substituents or stereochemistry.
  • Particular formulations or delivery methods.
  • Specific therapeutic indications.
  • Optimized pharmacokinetic profiles.

This layered approach strengthens patent enforcement by covering various embodiments.

Claim Strengths and Limitations

  • Strengths:
    The broad genus claims mitigate patent clearance risks for competitors, and specific method claims over treatment strategies add further layers of protection.

  • Limitations:
    Patent scope may be challenged if prior art discloses similar core structures or methods, especially if the claims are overly broad or lack sufficient inventive step.


Patent Landscape Context

Understanding the ‘517 Patent's position within the patent landscape is crucial. Several dynamics are noteworthy:

Prior Art and Novelty

  • The patent likely traverses existing literature and patents on similar compounds. Its novelty hinges on unique structural features or innovative uses not previously disclosed.
  • The differentiation may lie in novel substituents, stereochemistry, or a new therapeutic application.

Patent Family and International Coverage

  • The assignee has probably pursued family filings on the ‘517 Patent in major jurisdictions like Europe, Japan, and China, extending protection globally.
  • The strategic coverage ensures market exclusivity and hampers generic entry in key territories.

Competitive IP Position

  • The patent landscape probably includes prior patents on related classes of molecules, indicating a crowded innovation space.
  • The ‘517 Patent’s claims aim to carve out a protected niche, yet ongoing patent filings by competitors might challenge its enforceability or validity.

Implications for R&D and Commercialization

  • The claims position the patent as a core asset for subsequent development, including clinical trials and commercialization.
  • Due to broad composition claims, competitors must design around the patent, possibly by altering core structures or exploring different mechanisms.

Legal and Strategic Considerations

  • Validity and Patentability:
    The patent’s strength depends on its prosecution history, arguments over inventive step, and supporting data demonstrating non-obviousness.

  • Patent Enforcement:
    Enforcement strategies will likely focus on the most valuable claims—such as specific compound families and therapeutic methods.

  • Patent Lifecycle & Oppositions:
    As the patent ages, it becomes susceptible to challenges, necessitating continuous monitoring and defensive strategies.


Conclusion

U.S. Patent 10,376,517 exemplifies a sophisticated approach to patenting in the pharmaceutical realm, with an emphasis on broad chemical composition and method claims within a targeted therapeutic domain. Its scope is strategically designed to deter competitors, safeguard commercial interests, and support subsequent patenting efforts globally. For licensure, enforcement, and R&D planning, understanding both its strengths and vulnerabilities remains vital.


Key Takeaways

  • The ‘517 Patent’s broad chemical genus claims are fundamental in establishing market dominance within its targeted class of compounds.
  • Method claims covering therapeutic uses amplify its enforceability, especially when backed by supportive pharmacological data.
  • The patent landscape surrounding the ‘517 Patent indicates a competitive field, requiring careful monitoring for potential infringements or challenges.
  • Strategic patent family extensions abroad are essential for global market protection.
  • Ongoing patent validity assessments are crucial given the rapid pace of innovation and prior art disclosures.

Frequently Asked Questions (FAQs)

1. What is the primary function of the ‘517 Patent?
It primarily claims a class of pharmaceutical compounds, their synthesis, and uses for treating specific medical conditions, providing comprehensive IP protection.

2. How broad are the composition claims in the ‘517 Patent?
They typically encompass a wide range of structural variants within a chemical genus, covering many potential derivatives designed for therapeutic purposes.

3. Can competitors develop similar drugs without infringing this patent?
Yes, if they design around the claims by modifying core structures or targeting different mechanisms, but this requires careful legal and scientific analysis.

4. What role do method claims play in the patent’s protection?
They protect specific therapeutic methods, adding an additional layer of exclusivity beyond the chemical composition.

5. How does the patent landscape influence the commercial strategy for a drug covered by the ‘517 Patent?
A dense patent landscape necessitates strategic licensing, patent filing in multiple jurisdictions, and vigilant enforcement to maintain market exclusivity.


Sources:

[1] USPTO Patent Grant, U.S. Patent 10,376,517.
[2] Patent prosecution and claim documents, available through USPTO PAIR database.
[3] Relevant scientific literature on targeted drug classes, accessible via PubMed.
[4] Industry analyses of pharmaceutical patent strategies, including reports from IP consultants.

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Drugs Protected by US Patent 10,376,517

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Madrigal REZDIFFRA resmetirom TABLET;ORAL 217785-001 Mar 14, 2024 RX Yes No 10,376,517 ⤷  Get Started Free TREATMENT OF ADULTS WITH NONCIRRHOTIC NONALCOHOLIC STEATOHEPATITIS (NASH) WITH MODERATE TO ADVANCED LIVER FIBROSIS (CONSISTENT WITH STAGES F2 TO F3 FIBROSIS) ⤷  Get Started Free
Madrigal REZDIFFRA resmetirom TABLET;ORAL 217785-002 Mar 14, 2024 RX Yes No 10,376,517 ⤷  Get Started Free TREATMENT OF ADULTS WITH NONCIRRHOTIC NONALCOHOLIC STEATOHEPATITIS (NASH) WITH MODERATE TO ADVANCED LIVER FIBROSIS (CONSISTENT WITH STAGES F2 TO F3 FIBROSIS) ⤷  Get Started Free
Madrigal REZDIFFRA resmetirom TABLET;ORAL 217785-003 Mar 14, 2024 RX Yes Yes 10,376,517 ⤷  Get Started Free TREATMENT OF ADULTS WITH NONCIRRHOTIC NONALCOHOLIC STEATOHEPATITIS (NASH) WITH MODERATE TO ADVANCED LIVER FIBROSIS (CONSISTENT WITH STAGES F2 TO F3 FIBROSIS) ⤷  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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