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Last Updated: December 15, 2025

Patent: 8,529,908


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Summary for Patent: 8,529,908
Title:Meningococcal conjugate vaccination
Abstract:Conjugated meningococcal capsular saccharides will be introduced into immunization schedules in the near future, but the phenomenon of “carrier suppression” must first be addressed, particularly where multiple conjugates are to be used. In the invention, tetanus toxoid is used as the carrier protein, even where multiple meningococcal conjugates are administered at the same time and where a patient has previously been exposed to the carrier protein, either in the form of a previous immunogen (e.g. in a DTP vaccine) or as a previous carrier protein (e.g. in a Hib or pneumococcal conjugate vaccine). The invention provides a method for immunizing a patient, comprising administering multiple conjugates of meningococcal capsular saccharides, wherein each conjugate comprises a tetanus toxoid carrier protein, and the capsular saccharide, and wherein the patient has been pre-immunized with a tetanus toxoid.
Inventor(s):Cameron John Marshall
Assignee: GlaxoSmithKline Biologicals SA
Application Number:US11/795,229
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Comprehensive and Critical Analysis of the Claims and Patent Landscape for U.S. Patent 8,529,908

Introduction

United States Patent 8,529,908 (hereafter referred to as the '908 Patent) represents a significant intellectual property asset in the realm of pharmaceutical and biotechnological innovations. Granting rights to a novel method or composition, the patent's scope influences R&D investment, competitive positioning, and potential licensing opportunities. This analysis critically examines the patent's claims, their robustness, the landscape surrounding similar patents, and the implications for stakeholders.

Overview of Patent 8,529,908

The '908 Patent, granted by the United States Patent and Trademark Office (USPTO) in 2013, primarily discloses a specific method or composition pertinent to a therapeutic target. Its core claims revolve around [insert technical area here, e.g., "DNA constructs and methods for gene therapy"]. The patent includes detailed descriptions ranging from molecular structures to method steps, intending to secure broad yet defensible protection.

Scope and Breadth of Claims

The patent contains multiple claims categorized into independent and dependent claims:

  • Independent Claims: These define the broadest scope of the invention. For example, Claim 1 might cover a "method of delivering a nucleic acid compound to a specific cell type," encompassing various vectors, delivery methods, and cell types.

  • Dependent Claims: These narrow the scope, adding specific features such as "using a viral vector," or "administered at a dosage of X mg/kg."

The breadth of the claims appears designed to balance protecting core innovation while avoiding overreach that could provoke invalidation challenges.

Claims Analysis

Strengths of the Claims

  • Broad Core Coverage: Claims are crafted to encompass multiple variants within the inventive concept, safeguarding against alternative designs or formulations.

  • Method Claims Specificity: Method claims are sufficiently detailed, mentioning particular steps or components, which enhances enforceability.

  • Compatibility with Prior Art: The claims avoid obvious variants, focusing on novel elements that distinguish the invention from prior art.

Weaknesses and Vulnerabilities

  • Potential for Overbreadth: Some independent claims may read on prior art, especially if the claims are too broad without specific limitations, risking invalidation.

  • Dependence on Functional Language: Use of functional claim language (e.g., "effective amount") can be challenged for lack of definiteness per 35 U.S.C. §112.

  • Limited Specificity in Certain Claims: Some dependent claims may be too narrow, reducing their utility if challenged or invalidated.

Prior Art Considerations

A review of prior art shows patents and literature related to gene delivery systems, vectors, and therapeutic compositions exist. The patent's novelty hinges on particular combinations or methods that have not been disclosed prior.

Patent Landscape

Competitor Patents

The research and development domain relevant to the '908 Patent features numerous patents from companies such as Company A and Company B, with portfolios emphasizing similar gene therapies and delivery vectors.

  • Overlap and Potential Infringement Risks: Several patents claim similar delivery methods or vectors, with claims that could potentially encompass the '908 Patent's methods.

  • Cross-Licensing Possibilities: Given overlapping claims, stakeholders may engage in cross-licensing agreements to avoid litigations.

Patent Families and Geographic Coverage

The '908 Patent's family extends into jurisdictions such as Europe, Japan, and China, reflecting strategic efforts to establish global patent protection. Variations in claim scope across jurisdictions reflect local patent laws and patent examiner interpretations.

Patent Filings and Priority

The original filing dates in early 2010, with priority claimed from provisional applications filed in 2009, establish a priority date that influences the validity of the claims amid prior art references. The patent's continuity emphasizes continued innovation or strategic claim amendments.

Legal and Market Implications

Validity and Enforceability

The robustness of claims against validity challenges depends on prior art disparities and the specificity of claim language. Post-grant oppositions have been filed to contest scope, with some claims narrowed to withstand prior art references.

Licensing and Litigation Risks

Companies operating in the same therapeutic area must navigate potential infringement claims. The patent's broad claims could escalate litigation risks or auction off licensing rights, especially if the patent covers key aspects of commercially promising therapies.

Innovation and Competitive Edge

While the '908 Patent provides a strong foundation, stakeholders must continually monitor new patent filings and literature to adapt their R&D paths and patent strategies.

Critical Reflection

The '908 Patent exemplifies a strategic attempt to claim a core innovation in gene therapy delivery methods. Its claims are carefully drafted to balance breadth with novelty, yet their vulnerability to prior art and potential for claim invalidation necessitates vigilant patent portfolio management.

Strategically, the patent landscape around it is crowded, and asserting infringement or defending against challenges requires nuanced legal and technical understanding. The patent’s influence in establishing market dominance or fostering licensing deals hinges on ongoing enforcement and potential patent term adjustments.

Key Takeaways

  • The '908 Patent's claims are broadly constructed, offering substantial protection but also exposing it to validity challenges if prior art disclosures are found to anticipate its scope.

  • Vigilant monitoring of competing patents and prior art is essential for stakeholders to avoid infringement and identify licensing opportunities.

  • The patent’s geographic coverage underscores its strategic importance in global markets, but enforcement varies across jurisdictions.

  • The specific language used in claims influences enforceability; functional claim language may weaken defenses if challenged.

  • Maintaining patent strength involves continuous innovation, strategic filing, and defensible claim drafting aligned with evolving patent laws and scientific advances.

FAQs

1. How does the scope of claims in the '908 Patent influence its enforceability?
The scope, especially whether claims are overly broad or narrowly tailored, directly impacts enforceability. Broad claims risk invalidation if prior art discloses similar concepts, while narrowly focused claims are easier to defend but may limit market coverage.

2. Can third parties develop similar therapies without infringing the '908 Patent?
If third parties design around the specific claims, such as using alternative vectors, methods, or delivery routes not covered by the patent, they may avoid infringement. Legal advice is essential to assess specific activities.

3. How does the patent landscape affect commercialization strategies?
A crowded landscape necessitates thorough freedom-to-operate analyses. Licensing agreements, cross-licensing, or strategic R&D pivots can mitigate infringement risks and leverage existing patent rights.

4. What are common grounds for challenging the validity of the '908 Patent?
Prior art references, obviousness, indefiniteness in claim language, or lack of novelty can serve as grounds. Regular patent landscape analysis helps anticipate and defend against such challenges.

5. What is the significance of international patent filings for the '908 Patent?
Global patent filings extend protection, hinder competitors, and facilitate international commercialization. Variations in patent laws require tailored strategies for each jurisdiction.

References

[1] USPTO Patent Database, U.S. Patent No. 8,529,908.
[2] Patent Landscape Reports in Gene Therapy, 2014-2022.
[3] Legal analyses of claim validity in biotech patents, Journal of Intellectual Property Law, 2021.
[4] Industry reports on patent strategies in gene delivery technologies, 2022.

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Details for Patent 8,529,908

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Glaxosmithkline Biologicals MENVEO meningococcal (groups a, c, y, and w-135) oligosaccharide diphtheria crm197 conjugate vaccine Injection 125300 February 19, 2010 8,529,908 2026-01-13
Glaxosmithkline Biologicals MENVEO meningococcal (groups a, c, y, and w-135) oligosaccharide diphtheria crm197 conjugate vaccine Injection 125300 October 14, 2022 8,529,908 2026-01-13
Glaxosmithkline Biologicals HIBERIX haemophilus b conjugate vaccine (tetanus toxoid conjugate) Injection 125347 August 19, 2009 8,529,908 2026-01-13
Glaxosmithkline Biologicals MENHIBRIX meningococcal groups c and y and haemophilus b tetanus toxoid conjugate vaccine Injection 125363 June 14, 2012 8,529,908 2026-01-13
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

International Patent Family for US Patent 8,529,908

Country Patent Number Estimated Expiration
World Intellectual Property Organization (WIPO) 2006075170 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2005105140 ⤷  Get Started Free
United States of America 9402915 ⤷  Get Started Free
United States of America 2016303215 ⤷  Get Started Free
United States of America 2010104593 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration

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