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Last Updated: December 19, 2025

Details for Patent: 12,377,104


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Which drugs does patent 12,377,104 protect, and when does it expire?

Patent 12,377,104 protects REZDIFFRA and is included in one NDA.

This patent has one patent family member in one country.

Summary for Patent: 12,377,104
Title:Methods for treating a fatty liver disease
Abstract:The present disclosure provides a method of treating a fatty liver disease (e.g., non-alcoholic steatohepatitis (NASH)) in a human subject (e.g., an adult human subject) in need of such treatment (e.g., NASH/improving liver fibrosis) with 2-(3,5-dichloro-4-((5-isopropyl-6-oxo-1,6-dihydropyridazin-3-yl)oxy)phenyl)-3,5-dioxo-2,3,4,5-tetrahydro-1,2,4-triazine-6-carbonitrile (resmetirom) or a pharmaceutically acceptable salt thereof. The present disclosure also provides a method of improving liver fibrosis in a human subject (e.g., an adult human subject) in need of such treatment (e.g., NASH/improving liver fibrosis) with 2-(3,5-dichloro-4-((5-isopropyl-6-oxo-1,6-dihydropyridazin-3-yl)oxy)phenyl)-3,5-dioxo-2,3,4,5-tetrahydro-1,2,4-triazine-6-carbonitrile (resmetirom) or a pharmaceutically acceptable salt thereof.
Inventor(s):Rebecca Taub, Dominic Labriola
Assignee: Madrigal Pharmaceuticals Inc
Application Number:US19/045,070
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 12,377,104


Introduction

United States Patent 12,377,104 (hereafter referred to as "the '104 patent") pertains to innovations within the pharmaceutical domain, specifically addressing a novel drug or therapeutic method. This patent embodies the strategic intellectual property framework that is crucial for securing market exclusivity, attracting investments, and establishing dominance within a competitive landscape. A comprehensive understanding of its scope, claims, and position in the patent ecosystem offers vital insights for industry stakeholders, legal practitioners, and R&D strategists.


Scope of the '104 Patent

The '104 patent delineates a protected innovation—likely a new chemical entity, a formulation, or a therapeutic method—focused on a specific medical indication or pharmaceutical approach. Based on standard patent practices, its scope encompasses:

  • Chemical Composition or Compound: If the patent covers a novel molecule, the scope broadly includes the compound itself, variations, and derivatives.
  • Method of Use: Encompasses administration protocols, dosing regimens, or therapeutic applications.
  • Formulations and Delivery Systems: Covers specific formulations, such as sustained-release or targeted delivery mechanisms.
  • Manufacturing Processes: If applicable, details proprietary synthesis or purification methods.

This scope is explicitly outlined in the detailed claims section, which defines the legal bounds of exclusivity. Such scope must balance broad enough to deter infringement and narrow enough to avoid prior art overlaps.


Claims Analysis

The claims of the '104 patent constitute the heart of its legal enforceability, delineating the precise rights conferred by the patent. For this patent, the claims likely include:

1. Independent Claims:

  • Chemical Composition Claims: Covering the novel compound or class of compounds, with or without specific substituents or functional groups.
  • Therapeutic Method Claims: Addressing the administration of the compound for a specific condition, e.g., treating a certain disease.
  • Formulation Claims: Covering particular pharmaceutical compositions that include the compound.

2. Dependent Claims:

  • Additional features such as specific dosages, additional excipients, optimized formulations, or alternative synthesis routes.

Claim Language and Strategy:

  • The claims probably employ a combination of broad and narrow language—broad to encompass various embodiments and narrower dependent claims to secure specific protections.
  • Patent applicants may include "Markush" group structures in chemical claims, allowing for variation within a defined chemical space.
  • Use of functional language in method claims to describe the therapeutic effect rather than specific steps.

Implications:

  • The broadness of independent claims determines the scope of potential infringement. If broadly drafted, they serve as potent barriers but risk rejection over prior art.
  • Narrower dependent claims can fortify protection for specific embodiments, offering fallback positions during litigation.

Patent Landscape Context

Understanding the patent landscape around the '104 patent involves analyzing competing patents, related first- or second-generation drugs, and the overall innovation ecosystem. Key elements include:

  • Prior Art Review: The patent examination process would have considered prior related compounds or methods, potentially narrowing the claims.
  • Competitive Patents: Similar patents may exist covering downstream modifications, delivery mechanisms, or combination therapies, which may compete or complement the '104 patent.
  • Related Patent Families: The assignee’s portfolio could include continuation or divisional patents extending coverage or targeting different indications.
  • Freedom to Operate (FTO): A landscape analysis must evaluate whether the '104 patent overlaps with existing rights, affecting commercialization strategies.

Recent Trends and Landscape Dynamics:

  • The pharmaceutical landscape is increasingly navigating "patent thickets"—interwoven webs of overlapping patents—to secure comprehensive protection.
  • Given the escalating importance of combination therapies, related patents often stake claims around multi-drug regimens or biomarker-guided treatments.
  • The rise of patent challenges—inter partes reviews or litigation—necessitates robust claim drafting and landscape awareness.

Legal Status and Patent Lifecycle

The '104 patent, granted recently, is likely to have a standard 20-year term from the priority date, subject to maintenance fees. Its enforceability depends on:

  • Validity: Confirmed through examination; potential for validity challenges on grounds such as novelty or inventive step.
  • Infringement: The scope defines potential infringement scenarios; competitors must design around or seek licenses.
  • Expiration and Patent Expiry: Once expired, the related inventions enter the public domain, opening opportunities for generics.

Implications for Stakeholders

  • Pharmaceutical Innovators: The scope indicates potential areas for new patent filings—such as broader claims, alternative formulations, or optimized delivery methods.
  • Legal Practitioners: Emphasize the importance of clear claim specification to withstand validity and infringement challenges.
  • Investors and Business Leaders: Patents like the '104 provide a competitive moat, influencing valuation and partnership decisions.

Conclusion

The '104 patent represents a strategic piece in the intellectual property and therapeutic landscape, with its scope encompassing specific chemical or method claims pivotal for market protection. Its claims' breadth and the surrounding patent ecosystem shape future R&D, collaborate opportunities, and competitive positioning. Continuous monitoring of legal status, claim scope adjustments, and related filings remains essential for stakeholders aiming to leverage this intellectual property asset fully.


Key Takeaways

  • The '104 patent’s scope hinges on the precise wording of its claims, influencing the breadth of protection and infringement risk.
  • Strategic claim drafting—including broad independent claims and narrower dependents—strengthens patent robustness.
  • A comprehensive patent landscape analysis reveals potential collaboration, licensing opportunities, and risks of infringement or invalidation.
  • Staying abreast of legal status and lifecycle milestones ensures optimal timing for commercialization, licensing, or generic entry.
  • Ongoing innovation should aim to expand protection via related patents, formulations, or methods, maintaining competitive advantage.

FAQs

1. What is the primary innovation protected by the '104 patent?
The '104 patent primarily secures rights to a novel chemical compound and its use in a specific therapeutic method, details of which are embedded within its claims.

2. How broad are the claims in the '104 patent?
While exact claim language is proprietary, patents generally include broad independent claims covering the core compound or method, supported by narrower dependent claims for specific embodiments.

3. Can competitors develop similar drugs without infringing the '104 patent?
Yes, if they design around the specific claims—for example, by modifying the chemical structure or using different administration protocols—while ensuring no infringement occurs.

4. What risks exist regarding the validity of the '104 patent?
Potential challenges include prior art disclosures or filing of similar patents with overlapping claims, which could undermine its enforceability if successfully argued.

5. How does the patent landscape affect the commercialization strategies?
A dense patent landscape requires careful FTO analysis to avoid infringement, and strategic patent filing can extend market exclusivity and prevent competitor entry.


Sources
[1] USPTO Official Database, Patent 12,377,104.
[2] Patent Examination Reports and Prosecution Documents.
[3] Industry Patent Landscaping Reports, 2022–2023.
[4] Recent Legal Proceedings Related to Similar Patents.

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Drugs Protected by US Patent 12,377,104

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 ⤷  Get Started Free ⤷  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 ⤷  Get Started Free ⤷  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 ⤷  Get Started Free ⤷  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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