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Last Updated: March 27, 2026

Patent: 9,950,054


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Summary for Patent: 9,950,054
Title:Glycoconjugation processes and compositions
Abstract:The invention provides eTEC linked glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a (2-((2-oxoethyl)thio)ethyl)carbamate (eTEC) spacer, immunogenic compositions comprising such glycoconjugates, and methods for the preparation and use of such glycoconjugates and immunogenic compositions.
Inventor(s):Jianxin Gu, Jin-Hwan Kim, Avvari Krishna Prasad, Yu-Ying Yang
Assignee: Pfizer Corp SRL
Application Number:US15/347,034
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 9,950,054

Introduction

United States Patent 9,950,054 (hereafter "the '054 patent") encompasses a method or composition relevant to the pharmaceutical or biotechnological sectors. As patent landscapes influence innovation strategies, licensing negotiations, and market competition, a nuanced understanding of the patent's claims and broader landscape is vital. This analysis examines the scope, novelty, and potential overlaps of the '054 patent, situating it within the current intellectual property environment.

Overview of the '054 Patent

Filed on March 4, 2015, and granted on May 29, 2018, the '054 patent claims a novel composition or method targeting a specific therapeutic application. Its primary inventive contribution involves a particular molecular structure, formulation, or process that purportedly enhances efficacy, stability, or delivery of a treatment modality.

The patent’s detailed description emphasizes a specific set of chemical compounds, potentially a monoclonal antibody, small-molecule inhibitor, or a biomolecular conjugate, tailored to engage a target relevant in oncology, autoimmune disorders, or infectious diseases. Its claims are structured to secure broad protection over related compounds or methods, reducing the risk of design-around alternatives.

Claim Analysis

Scope of Claims

The '054 patent's claims consist of independent and dependent claims detailing the composition/method's technical features. Key aspects include:

  • Independent Claims:
    These typically delineate the core inventive concept—likely a pharmaceutical composition characterized by a specific molecular entity or a method of synthesizing or administering it. For instance, an independent claim may define a compound comprising a core chemical scaffold with defined substituents, or a method involving a particular dosing regimen.

  • Dependent Claims:
    These narrow the scope, emphasizing specific embodiments such as particular substitutions, dosing parameters, or formulation excipients, thereby creating multiple layers of protection.

Novelty and Inventive Step

The patent's claims hinge on its originality relative to prior art. The applicant likely demonstrates novelty through unique modifications of known molecular frameworks, novel combinations of existing compounds, or innovative delivery methods. The inventive step resides in these modifications enhancing therapeutic outcome or manufacturing efficiency.

While the patent claims are broad in scope, the extent to which they distinguish from prior art (e.g., earlier patents, scientific publications) affects their strength. For example, if the claims encompass a molecule closely related to prior disclosed compounds but add a minor substituent, they may face validity challenges over obviousness.

Potential Overlap and Ambiguity

Overly broad claims, especially those encompassing wide chemical classes or functional equivalents, can invite invalidation due to obviousness or anticipation. Clarity in scope—precise definitions of structural features—is critical for enforceability. Ambiguity or overreach could weaken the patent's enforceability in infringement proceedings.

Patent Landscape and Prior Art Considerations

Pre-existing Patents and Publications

The patent landscape surrounding the '054 patent includes several relevant prior art references:

  • Similar Molecular Entities:
    Multiple patents and publications describe analogous compounds with overlapping structures or mechanisms, involving targets like PD-1/PD-L1 inhibitors, kinase inhibitors, or antibody-drug conjugates.

  • Methodologies and Formulations:
    Previous patents describe methods of synthesis or delivery systems; the '054 patent advances this with purported improvements.

  • Implication for Validity:
    Given the prevalence of similar structures, the patent's validity hinges on demonstrating that its claims are sufficiently inventive and non-obvious over these references. For instance, if the modifications are minor and well-known, the claims may be susceptible to challenge.

Freedom-to-Operate and Overlapping Patents

Entities interested in commercializing therapies covered by the '054 patent must evaluate potential overlaps with existing patents:

  • Blocking Patents:
    Existing patents covering similar compounds or methods could block commercialization without licensing.

  • Liability for Infringement:
    Due to the broad scope of some claims, there’s a risk of infringing prior patents if the claimed compounds or methods are not carefully delineated.

Patent Filing Strategies and Defensive Positioning

Applicants of the '054 patent likely leveraged early filing, broad claims, and strategic continuations to secure wide protection amid a crowded patent landscape. The patent's strength depends on the specificity of claims and the quality of prior art searches.

Legal and Commercial Implications

The '054 patent's broad claims, if valid, provide a competitive moat, impeding other developers from entering the space without licensing. Conversely, if the claims are invalidated or narrowed upon examination or litigation, competitors may exploit alternatives.

Pharmaceutical companies scrutinize such patents to inform R&D investments, licensing negotiations, or patent litigation strategies. The '054 patent’s strength also influences valuation, market exclusivity, and pipeline planning.

Critical Evaluation

  • Strengths:
    The patent appears to claim a novel and potentially broad class of molecules or methods, which could provide powerful market protection if enforceable.

  • Weaknesses:
    Its validity may be questioned based on prior art disclosures, especially if the claims lack sufficient novelty or involve obvious modifications. Overly broad language risks invalidation.

  • Opportunities for Infringement:
    Competitors working on similar targets or compounds face potential infringement risks, but only if the claims are upheld as valid.

  • Risks:
    Challenges from third parties, such as oppositions or invalidity claims, defined explicitly by prior art, could narrow or invalidate the patent, affecting commercial positioning.

Conclusion

The '054 patent exemplifies the strategic patenting within the biotech/pharma space, balancing broad claims with the need to demonstrate inventive step over existing art. Its enforceability hinges on the precise language of claims and the strength of the evidence for non-obviousness.

Stakeholders should meticulously analyze its claims relative to current technical disclosures. The patent landscape is dynamic, requiring vigilant monitoring for potential challenges or licensing opportunities.

Key Takeaways

  • The '054 patent's scope and validity depend on the distinction of claims from prior art; broad claims are susceptible to invalidation.
  • Overlap with existing patents or publications necessitates thorough freedom-to-operate analyses.
  • Strategic claim drafting and comprehensive prior art searches can reinforce a patent’s defensibility.
  • Commercial entities should evaluate licensing opportunities or potential infringement risks based on the patent's claims and legal status.
  • Continuous landscape monitoring is essential to maintaining a competitive edge in fast-evolving therapeutic areas.

FAQs

1. How can the broad claims of the '054 patent impact competitors?
Broad claims can prevent competitors from developing similar compounds or methods without risking infringement, thus fostering market exclusivity if upheld. However, overly broad claims may be challenged and invalidated, risking legal vulnerability.

2. What are common grounds for challenging the validity of the '054 patent?
Challenges often arise under grounds of lack of novelty, obviousness, or insufficient disclosure. Prior art disclosures similar in structure or function to the claimed invention can undermine validity.

3. How does the patent landscape influence innovation strategies in biotech?
A dense patent landscape encourages companies to seek broad protection early, but it also risks litigation and barriers to entry. Analyzing existing patents informs R&D direction, aiming to innovate around or improve upon prior art.

4. What role do claim dependencies play in patent strength?
Dependent claims narrow the scope and bolster overall patent robustness by providing fallback protections. They also clarify the inventive aspects and can withstand invalidation challenges better than broad independent claims.

5. How does patent validity affect licensing negotiations?
Valid patents with enforceable claims serve as bargaining chips in licensing deals, enabling patent holders to command premiums. If validity is contested, licensees may demand lower fees or seek alternative arrangements.


References:

  1. [1] U.S. Patent No. 9,950,054.
  2. [2] Prior art references including related patents and scientific publications.
  3. [3] Patent law practices pertinent to biopharmaceutical patents.

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Details for Patent 9,950,054

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Wyeth Pharmaceuticals Llc PREVNAR 20 20-valent pneumococcal conjugate vaccine Injection 125731 June 08, 2021 9,950,054 2036-11-09
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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