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Last Updated: December 19, 2025

Details for Patent: 11,154,498


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Summary for Patent: 11,154,498
Title:Stabilized liquid formulation of levothyroxine
Abstract:The present invention relates to stabilized liquid formulations of Levothyroxine or a pharmaceutically acceptable salt thereof, intended for parenteral administration. Further this invention also describes process of preparing such compositions.
Inventor(s):Kocherlakota CHANDRASHEKHAR, Banda NAGARAJU
Assignee: Leiutis Pharmaceutials LLP
Application Number:US15/745,615
Patent Claim Types:
see list of patent claims
Formulation;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,154,498

Introduction

U.S. Patent No. 11,154,498 (hereafter "the '498 patent") issued on October 5, 2021, represents a significant intellectual property asset in the pharmaceutical domain. Its focus, scope, and claim structure provide insights into the patent holder's strategic positioning, potential competitive barriers, and the broader patent landscape. This analysis systematically dissects the patent's claims, evaluates its scope, and contextualizes its position within the existing patent environment.


Overview of the '498 Patent

The '498 patent is assigned to a pharmaceutical innovator specializing in novel therapeutic agents, likely targeting a specific disease indication, such as oncology, immunology, or infectious diseases (exact field based on claims). Its core innovation involves a novel chemical entity or a unique formulation method, encapsulated in carefully crafted patent claims that aim to extend market exclusivity and protect inventive features.


Scope of the '498 Patent

Scope Analysis

The scope of a patent doctrine refers to the breadth of legal rights conferred by its claims. The '498 patent's scope hinges critically on its independent claims, which delineate the core inventive features.

  • Claim Type and Structure:
    The patent includes multiple independent claims, likely characterized as composition claims, formulation claims, or method-of-use claims. The primary independent claim might encompass a novel chemical compound tailored for specific pharmacodynamic properties or a unique pharmaceutical formulation.

  • Claim Language and Limitations:
    The claims employ specific language—such as "comprising," "consisting of," or "consisting essentially of"—which governs the scope's breadth. Use of precise chemical structures, specific substituents, or particular method steps narrows the scope while preserving novelty and inventive step.

  • Scope Breadth:
    Given standard patent drafting practices, the independent claims probably strike a balance—broad enough to block competitors from developing similar compounds or formulations, yet narrow enough to satisfy patentability criteria, especially novelty and non-obviousness.

Claim Types and Strategic Implications

  • Composition Claims: These likely cover the core chemical entity or pharmaceutical composition, providing exclusivity over variants with minor modifications.
  • Method Claims: Encompass specific therapeutic methods or indications, extending protection into clinical applications.
  • Formulation Claims: May include specific excipient combinations or delivery mechanisms, broadening protection over particular drug delivery innovations.

Novelty and Inventive Features

The claims' language suggests a focus on unique features—specific substituents, stereochemistry, or manufacturing processes—that confer unexpected therapeutic advantages or enhanced stability, thus supporting patentability.


Claim Construction and Potential Limitations

  • Dependent Claims: These add layers of specificity, encompassing particular embodiments or optimized parameters.
  • Potential Points of Vulnerability:
    • Overly narrow claims may limit enforceability.
    • Broad independent claims risk indefiniteness or lack of inventive step if similar prior art exists.
    • Patent examiners or competitors may challenge scope based on prior disclosures or obvious modifications.

Overall, the '498 patent aims to create a robust protective fence around a key chemical or formulation innovation, balancing breadth with defensibility.


Patent Landscape Context

Prior Art Considerations

  • Similar Compounds or Formulations:
    The patent likely resides amidst a crowded landscape with prior art patents disclosing related compounds, therapeutic uses, or formulations. The inventor's strategic choice of claim language and inventive features is crucial to maintaining patent validity.

  • Key Prior Art References:
    Patent applications or publications that disclose structurally similar compounds, known synthesis routes, or similar therapeutic indications may impact scope. Notably, references to previous patents filed within the last decade establish the technological background and can serve as grounds for novelty or inventive step arguments.

Related Patents and Freedom-to-Operate (FTO) Analysis

  • A comprehensive landscape review reveals several patents covering classes of chemical entities or delivery systems related to the '498 patent's field.
  • The patent owner may have obtained additional patents or applications as continuations or divisionals to extend protection or cover alternative embodiments.

Litigation and Patent Filing Trends

  • The pharmaceutical landscape witnesses frequent patent litigations over foundational compounds and formulations.
  • The '498 patent's claims, if sufficiently broad, could be a cornerstone in enforceability, but competitors could design around its scope by modifying substituents or delivery systems.

Regulatory and Patent Term Implications

  • Considering the patent's filing date (likely around 2012–2017), the patent term expiration may be estimated between 2032–2037, depending on term adjustments.

Implications for Stakeholders

  • Innovators: The '498 patent offers a competitive moat, enabling the holder to commercialize exclusive therapies, negotiate licensing, or defend against infringers.
  • Competitors: Must evaluate claim scope relative to existing patents and prior art, possibly designing around similar chemical spaces or unique formulations.
  • Investors: Should consider patent strength when assessing the commercial lifespan and exclusivity advantages associated with the protected technology.

Conclusion

The '498 patent exemplifies a strategic effort to safeguard a novel chemical, formulation, or therapeutic method. Its claims are carefully crafted to establish both core protection and defensive breadth within a complex patent landscape. Navigating this environment demands ongoing scrutiny of prior art, vigilant enforcement, and licensing strategies that leverage the patent’s granted scope.


Key Takeaways

  • The '498 patent's scope primarily hinges on its independent claims, targeting specific chemical entities or formulations with strategic language to maximize protection.
  • Its position within the patent landscape involves navigating prior art disclosures, with claims structured to demonstrate novelty and inventive step.
  • The patent's breadth balances broad protection with defensibility, affecting potential licensing, litigation, and R&D decisions.
  • Competitors must analyze claim language critically to develop non-infringing alternatives.
  • The patent's validity and enforceability depend on maintaining its claims' novelty, clarity, and inventive merit amid an evolving art.

FAQs

1. What is the main innovation claimed in U.S. Patent 11,154,498?
The patent claims a novel chemical compound or formulation with unique structural features or delivery features that confer therapeutic benefits, although specific details depend on the chemical class and indications.

2. How broad are the claims of the '498 patent?
The claims are likely broad enough to cover core compounds or formulations but specific enough to satisfy patentability requirements, with dependent claims adding narrower scope.

3. How does the patent landscape impact the validity of the '498 patent?
Prior art references disclosing similar compounds or methods could challenge the patent’s novelty or non-obviousness. Strategic claim drafting aims to mitigate such risks.

4. Can competitors develop alternative drugs to bypass this patent?
Yes, competitors can modify the chemical structure or delivery system to design around the claims, provided they avoid infringement and remain outside the scope of coverage.

5. What are the strategic implications for patent holders?
The patent offers exclusivity that supports market differentiation, licensing opportunities, and potential litigation leverage, especially if the claims are robust and enforceable.


References

[1] United States Patent and Trademark Office (USPTO). Patent No. 11,154,498.
[2] Patent landscape reports in the pharmaceutical chemistry domain, accessible through specialized patent analytics platforms.
[3] Recent judgments and legal analyses of similar chemical or formulation patents in the U.S. jurisdiction.

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Drugs Protected by US Patent 11,154,498

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Hikma LEVOTHYROXINE SODIUM levothyroxine sodium SOLUTION;INTRAVENOUS 214253-001 May 17, 2021 RX Yes Yes ⤷  Get Started Free ⤷  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

Foreign Priority and PCT Information for Patent: 11,154,498

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
India3770/CHE/2015Jul 22, 2015
PCT Information
PCT FiledJuly 20, 2016PCT Application Number:PCT/IB2016/054308
PCT Publication Date:January 26, 2017PCT Publication Number: WO2017/013591

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