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Last Updated: December 12, 2025

Details for Patent: 11,857,523


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Which drugs does patent 11,857,523 protect, and when does it expire?

Patent 11,857,523 protects IQIRVO and is included in one NDA.

This patent has thirty-two patent family members in twenty-two countries.

Summary for Patent: 11,857,523
Title:Methods of treatment of cholestatic diseases
Abstract:The present invention relates to the use of compound 1-[4-methylthiophenyl]-3-[3,5-dimethyl-4-carboxydimethylmethyloxyphenyl]prop-2-en-1-one (Elafibranor or GFT505) for treating cholestatic diseases, and more specifically PBC and/or PSC.
Inventor(s):Remy HANF
Assignee: Genfit SA
Application Number:US18/212,029
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 11,857,523


Introduction

U.S. Patent 11,857,523 (hereafter "the '523 patent") represents a significant intellectual property asset within the pharmaceutical landscape, likely covering a novel drug, formulation, or method of treatment. This analysis explores the patent’s scope, claims, and its positioning within the broader patent landscape, providing valuable insights for industry stakeholders, patent professionals, and strategic decision-makers.


Overview of the '523 Patent

The '523 patent, granted by the United States Patent and Trademark Office (USPTO), was issued in 2023. It claims specific innovations related to a pharmacological compound or a method of use that addresses critical therapeutic needs. While the detailed patent document must be reviewed for exhaustive specifics, a typical patent of this nature generally delineates its scope through a series of independent and dependent claims, supported by detailed descriptions and examples.


Scope and Claims: An In-Depth Analysis

Claim Structure and Hierarchy

The scope of the '523 patent primarily hinges on its claims, which define the legal boundaries of patent protection. Generally, patents contain:

  • Independent Claims: Broadly define the core invention, e.g., a novel compound, formulation, or therapeutic method.
  • Dependent Claims: Narrower, specify particular embodiments, analogs, or applications.

A typical pharmaceutical patent aims to protect the compound's structure, a unique method of synthesis, or specific medical indications.

Key Aspects of the Claims

  1. Chemical Composition or Compound Claims

    These claims are designed to protect the specific chemical entity or class of compounds disclosed in the patent. They may include structural formulas, stereochemistry, polymorphs, salts, or crystal forms. If the '523 patent claims a novel molecule, the scope may include derivatives or analogs with demonstrated efficacy or improved pharmacokinetics.

  2. Method of Use Claims

    These focus on therapeutic applications, such as treatment of particular medical conditions. Such claims are critical in establishing patent rights beyond the chemical compound itself. For instance, claims protecting the use of the compound in treating a specific disease or symptom(s) expand patent coverage to method-of-treatment rights.

  3. Formulation and Delivery Claims

    These claims could specify formulations—e.g., controlled-release, nanoparticulate, or combination therapies—enhancing patent scope by covering various embodiments and delivery mechanisms.

  4. Process or Synthesis Claims

    Methods of manufacturing the compound or optimizing synthesis routes may be claimed to safeguard proprietary production processes, which can be crucial in maintaining manufacturing exclusivity.

Claim Language and Limitations

The strength of the patent’s claims depends on specificity and breadth:

  • Broad claims provide extensive protection but risk being challenged or invalidated for lack of novelty or inventiveness.
  • Narrow claims are easier to defend but may be circumvented by minor modifications.

In the case of the '523 patent, the claims likely balance breadth with novelty, claiming a core innovative compound accompanied by specific uses and formulations.


Patent Landscape Context

Positioning within the Pharmaceutical Patent Ecosystem

The '523 patent exists amid a vast landscape of prior art, including:

  • Pre-existing compounds: The patent must distinguish itself from prior molecules with similar structures or indications.
  • Related patents: Competitors may have filed patents on related chemical classes, formulations, or methods—forming a "patent thicket."
  • Patent term considerations: With patent terms lasting typically 20 years from filing, the patent’s strategic value depends on the remaining exclusivity period, particularly in fast-evolving therapeutic areas.

Patent Families and Related Applications

A patent family encompasses filings in multiple jurisdictions and prosecuting related applications. The '523 patent, if part of a broader family, could include:

  • Continuation or divisional applications, extending protection.
  • Provisional applications establishing initial priority dates.
  • International filings (PCT applications), positioning for global protection.

Understanding its family members aids in assessing the scope and enforceability maneuvers.

Challenges and Competitors

The pharmaceutical landscape is rife with competing patents aiming to secure claims around similar compounds or targets. The validity of the '523 patent could be challenged via:

  • Patent invalidation suits based on obviousness or anticipation.
  • Patent litigation from competitors or generics seeking to enter the market post-expiration.

The robustness of its claims, specification, and prosecution history will influence its defensive strength.


Strategic Implications

Market Exclusivity and Patent Strength

The juxtaposition of broad claims on the chemical compound, method of use, and formulation determines the patent’s strategic value. A strong, well-drafted patent can:

  • Lock out competitors.
  • Enable licensing opportunities.
  • Underpin patent litigation or settlement strategies.

Complementary IP Rights

Complementary patents (e.g., orphan drug designations, biomarkers, or combination therapies) can extend market exclusivity and broaden the patent landscape.


Conclusion

U.S. Patent 11,857,523 exemplifies a sophisticated approach to patenting pharmaceutical innovations, likely encompassing multiple claim types for maximal protection. Its scope, centered on a specific compound or therapeutic method, is crafted within the constraints of prior art and strategic patenting considerations. Its position within the patent landscape underscores the importance of comprehensive prosecution, vigilant monitoring, and strategic portfolio management to sustain a competitive advantage.


Key Takeaways

  • Claim Breadth and Specificity: The patent’s strength hinges on a balanced combination of broad, independent claims and narrower, dependent claims, covering chemistry, methods, and formulations.
  • Patent Landscape Positioning: The '523 patent must be evaluated concerning prior art, related applications, and potential challenges to ensure its robustness.
  • Market and Strategic Value: A well-constructed patent can secure exclusivity, support licensing, and stymie infringement, reinforcing market position.
  • Ongoing Monitoring: Continuous surveillance of competing filings and potential infringing activities is essential to maintain the patent’s enforceability.
  • Holistic IP Strategy: Integrating this patent within a broader IP landscape—including method-of-use patents, manufacturing processes, and regulatory exclusivities—maximizes commercial benefits.

FAQs

1. What is the primary innovation protected by U.S. Patent 11,857,523?
The patent likely covers a novel chemical compound or therapeutic method, with claims specifically delineating the compound’s structure, its uses, and formulations. Precise details are available in the patent document.

2. How broad are the claims in the '523 patent?
The patent's independent claims probably establish a balance—broad enough to prevent easy circumvention but specific enough to withstand validity challenges. The exact scope varies based on claim drafting and prior art considerations.

3. What is the strategic importance of this patent in the pharmaceutical industry?
It could provide exclusivity for a promising drug candidate, enable licensing revenue, and serve as a cornerstone for a proprietary product portfolio.

4. How does the patent landscape influence the patent’s enforceability?
Existence of similar prior art or overlapping patents may lead to litigations or invalidation threats. A strong prosecution history and strategic patent family management mitigate risks.

5. When will the patent expire, and what opportunities exist post-expiry?
Typically, the patent expires around 2043, given standard 20-year terms from filing. Post-expiry, generic manufacturers may produce biosimilars or generics, impacting market share.


References

(For the purpose of this analysis, specific patent documents and related patent law references are assumed, with detailed citations to be included following actual patent disclosures and legal databases.)

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Recent additions to Drugs Protected by US Patent 11,857,523

These patents are from the daily update and have not yet been integrated into the regular database
Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Product Substance Delist Req. Patent Expiration Usecode Patented / Exclusive Use
Ipsen IQIRVO elafibranor TABLET 218860 Jun 10, 2024 RX Yes ⤷  Get Started Free ⤷  Get Started Free U-3955 TREATMENT OF PRIMARY BILIARY CHOLANGITIS (PBC) IN COMBINATION WITH URSODEOXYCHOLIC ACID (UDCA) IN ADULTS WHO HAVE HAD AN INADEQUATE RESPONSE TO UDCA, OR AS MONOTHERAPY IN PATIENTS UNABLE TO TOLERATE UDCA
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Type >RLD >Patent No. >Product >Substance >Delist Req. >Patent Expiration >Usecode >Patented / Exclusive Use

Drugs Protected by US Patent 11,857,523

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Ipsen IQIRVO elafibranor TABLET;ORAL 218860-001 Jun 10, 2024 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF PRIMARY BILIARY CHOLANGITIS (PBC) IN COMBINATION WITH URSODEOXYCHOLIC ACID (UDCA) IN ADULTS WHO HAVE HAD AN INADEQUATE RESPONSE TO UDCA, OR AS MONOTHERAPY IN PATIENTS UNABLE TO TOLERATE UDCA ⤷  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 11,857,523

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3435996 ⤷  Get Started Free 301342 Netherlands ⤷  Get Started Free
European Patent Office 3435996 ⤷  Get Started Free C20250032 Finland ⤷  Get Started Free
European Patent Office 3435996 ⤷  Get Started Free CA 2025 00035 Denmark ⤷  Get Started Free
European Patent Office 3435996 ⤷  Get Started Free PA2025535 Lithuania ⤷  Get Started Free
Australia 2017242819 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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