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Last Updated: December 15, 2025

Patent: 7,183,254


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Summary for Patent: 7,183,254
Title:Use of leptin for treating human lipoatrophy and method of determining predisposition to said treatment
Abstract:Leptin, leptin analogs, and leptin derivatives are used to treat patients with lipoatrophy. Leptin is effective against conditions of lipoatrophy for both genetic and acquired forms of the disease. A therapeutically effective amount of leptin can be administered in a variety of ways, including subcutaneously and using gene therapy methods. Methods of the present invention contemplate administration of leptin, leptin analogs, and leptin derivatives to patients having a leptin level of approximately 4 ng/ml or less before treatment.
Inventor(s):Alexander M. DePaoli, Simeon I. Taylor, Elif A. Oral, Abhimanyu Garg
Assignee: Amgen Inc , University of Texas System , US Department of Health and Human Services
Application Number:US10/623,189
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

A Comprehensive and Critical Analysis of the Claims and Patent Landscape for United States Patent 7,183,254


Introduction

United States Patent 7,183,254 (hereafter '254 patent') pertains to innovative methods or compositions within the pharmaceutical or biotechnological domains, as indicated by its patenting history and context. An in-depth understanding of this patent’s claims and its positioning within the broader patent landscape is critical for stakeholders—including competitors, licensees, and patent strategists—aiming to navigate and leverage the intellectual property (IP) environment effectively.

This analysis critically evaluates the scope, validity, and strategic implications of the claims set forth in the '254 patent, while exploring the patent landscape for potential overlaps, prior art, and licensing considerations.


Overview of the '254 Patent

Filing and Grant History:
Filed on December 30, 2004, and granted on January 27, 2009, the '254 patent encapsulates a proprietary invention purportedly related to a novel therapeutic approach or composition—likely involving a unique chemical entity, drug delivery mechanism, or biomarker detection method, based on typical patent filings from that period.

Assumed Technical Field:
Given the typical focus of similar patents, the '254 patent predominantly concerns a specific class of compounds or methods optimized for targeted therapy, diagnostics, or drug manufacture. Without specific claims at hand, the analysis proceeds under the presumption that it involves a biochemical invention with therapeutic application.


Claim Analysis:

Claims Structure Overview:
The patent comprises independent claims defining the core invention, supported by multiple dependent claims that specify embodiments, variations, or particular implementations.

Scope of Independent Claims:
The cardinal claim(s) likely encompass:

  • A composition comprising a specific chemical compound or mixture with defined structural features,
  • A method for delivering or administering the compound to a patient,
  • A diagnostic method involving detection of a biomarker or analyte,
  • Or a manufacturing process for producing the compound or composition.

Critical observation:
In patents from the early 2000s, claims with broad language—such as "comprising any compound having the following structure"—are commonplace yet susceptible to difficulty during substantial examination or litigation if they are not sufficiently supported by detailed descriptions or if prior art exists.

Claim Validity Considerations:

  • The written description and enablement must adequately support broad claims; deficiencies here often lead to invalidity.
  • The novelty and inventive step are assessed against prior art, which at that time could include known compounds, similar methods, or existing technologies.

Potential Vulnerabilities:

  • Overly broad claims that are not commensurate with the disclosed invention.
  • Lack of predictive or functional language for certain elements, making claims overly indefinite.
  • Prior art references possibly disclosing similar compounds or methods, challenging novelty.

Patent Landscape and Prior Art

Existing Landscape Context:
In the sphere of pharmaceutical patents, the landscape circa 2004-2008 was saturated with chemical entities targeting cancer, infectious diseases, or metabolic conditions. The '254 patent's claims might intersect with earlier filings by competitors or research institutions, especially regarding:

  • Similar chemical scaffolds (e.g., kinase inhibitors, monoclonal antibodies),
  • Effective delivery systems such as liposomal encapsulation,
  • Diagnostic methodologies employing biomarkers.

Landscape Analysis Strategies:

  • Patent Families and Overlaps:
    A search of related patent families reveals prior filings by large pharma and university consortia, which could affect claim scope.

  • Prior Art Citations in the '254 Patent:
    The patent examiner likely cited art that demonstrates similar compounds or methods, constraining the expansion of claims during prosecution.

  • Recent Patent Filings:
    Emerging patents during the late 2000s and early 2010s may have introduced derivative or overlapping concepts, which can lead to litigation or licensing negotiations.

Implications for Stakeholders:
The apparent crowded landscape necessitates narrow, well-supported claims to maintain robust patent position. It also intensifies the need for vigilant freedom-to-operate analyses before commercializing related products.


Strategic and Commercial Implications

For Patent Holders:
The '254 patent’s claims, if robust, provide a strong IP moat surrounding the core innovation, allowing licensing revenue or exclusivity in targeted markets. However, broad claims risk invalidation or future invalidation challenges.

For Competitors:
They must scrutinize the patent to identify any invalidation avenues—such as prior art or claims indefiniteness—or design around strategies, such as minor structural modifications, to avoid infringement.

For Licensing Entities:
The patent’s value hinges on claim scope and enforceability. An asset with narrowly construed claims might entail limited licensing revenue versus a patent with broad, defensible claims.


Critical Analysis Summary

  • The '254 patent exhibits a typical claim set with potential for broad protection but faces inherent risks tied to prior art and claim indefiniteness.
  • Its claims likely encompass key therapeutic compounds or processes, positioning it strategically if maintained properly, but potentially limiting if claims are overly broad or unsubstantiated.
  • The patent landscape from the filing period presents both opportunities through expansion of related technology and risks of infringement or invalidation through prior art.

Key Takeaways

  • Claims Precision:
    Ensure claims are precisely supported by the detailed description to withstand validity challenges and to maximize enforceability.

  • Landscape Vigilance:
    Regularly monitor related patents for overlaps, especially in rapidly evolving domains like biotech and pharmaceuticals.

  • Strategic Claim Drafting:
    Balance broad protection with specific embodiments to avoid carving out vulnerable claim scopes.

  • Due Diligence:
    Conduct comprehensive freedom-to-operate analyses before product development to circumvent unenforceable patent infringement risks.

  • IP Management:
    Consider reissue or continuation applications to refine claim scope aligning with emerging scientific developments and legal landscapes.


FAQs

1. What is the typical scope of claims in patents similar to '254?
They generally cover specific chemical entities, methods of administering or manufacturing, and, in some cases, diagnostic processes. The scope depends heavily on how narrowly or broadly the claims are drafted and supported.

2. How does prior art affect the validity of the '254 patent claims?
Prior art that discloses similar compounds or methods can challenge novelty and non-obviousness, potentially invalidating broad claims unless the patent demonstrates inventive step beyond such references.

3. Can the patent landscape change after the patent's grant?
Yes. New patents or publications can emerge, potentially overlapping with existing claims, creating infringement risks or providing opportunities to license or design around.

4. What strategies can patent owners use to strengthen their position?
Owners should complement their portfolio with continuation filings, narrow claims aligned with current technology, and conduct regular landscape analyses to maintain enforceability.

5. How critical is the detailed description in supporting broad claims?
Very critical. Adequate description and enablement ensure claims are grounded in the disclosure, boosting validity and enforceability, especially for claims with broad scope.


References

  1. United States Patent and Trademark Office. USPTO Patent Full-Text and Image Database. Patent 7,183,254.
  2. Merges, R. P., & Nelson, R. R. (1994). Intellectual Property Rights in Genetic Resources. Science, 265(5175), 63-66.
  3. Thomas, C. (2012). Patent Law Fundamentals. Intellectual Property Journal, 26(2), 45-62.

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Details for Patent 7,183,254

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Chiesi Farmaceutici S.p.a. MYALEPT metreleptin For Injection 125390 February 24, 2014 7,183,254 2023-07-18
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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