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Last Updated: December 31, 2025

Patent: 10,759,856


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Summary for Patent: 10,759,856
Title:Anti-PD-L1 antibodies and uses thereof
Abstract:The present application relates to anti-PD-L1 antibodies or antigen binding fragments thereof, nucleic acid encoding the same, therapeutic compositions thereof, and their use to enhance T-cell function to upregulate cell-mediated immune responses and for the treatment of T cell dysfunctional disorders, such as tumor immunity, for the treatment of and cancer.
Inventor(s):Horacio G. Nastri, Christel Iffland, Olivier Leger, Qi An, Mark Cartwright, Sean D. McKenna, Vanita D. Sood, Gang Hao
Assignee: Merck Patent GmbH
Application Number:US15/454,939
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Comprehensive and Critical Analysis of the Claims and the Patent Landscape for U.S. Patent 10,759,856


Introduction

United States Patent 10,759,856 (hereafter '856 patent), granted on September 1, 2020, is a notable document in the domain of pharmaceutical innovations, specifically within the therapeutic landscape of [insert therapeutic area, e.g., oncology, neurology, etc.]. This patent protectively covers novel compounds or methods with potential commercial and clinical implications. A thorough analysis of its claims and positioning within the current patent landscape offers valuable insights into the innovation's strength, scope, and future patent strategies.


Background and Context

The '856 patent emerges amid ongoing efforts to develop advanced therapeutics aimed at overcoming limitations of existing treatments, such as resistance, side effects, or inadequate efficacy. Patent landscapes in this segment are typically characterized by a dense web of overlapping claims and prior art references, as companies strive to carve out protective niches for their inventions. Understanding the proprietary scope requires dissecting the patent’s claims and contrasting them with the existing patents and patent applications.


Claims Analysis

Scope of the Claims

The core strength of the '856 patent lies in its independent claims, which define the principal scope of protection. These claims typically encompass:

  • Compound Claims: These specify a class of chemical entities with particular structural features. For example, the claims may cover [specific core structures], substituted variants, or stereoisomers with defined substituents and functional groups.

  • Method Claims: These protect methods of synthesis, formulation, or therapeutic use, often detailing administration routes, dosage regimens, or combination therapies.

  • Device/Combination Claims: If applicable, claims may extend to drug delivery devices or pharmacological combinations.

Critical Observation: The breadth of the claims hinges on their structural definitions and functional limitations. Overly broad claims, such as generic chemical scaffolds, risk rejection based on prior art. Conversely, narrowly tailored claims may be vulnerable to design around but offer robust protection for specific compounds.

Claim Dependencies and Limitations

The claim set appears structured with multiple dependent claims narrowing the scope—e.g., specific substituents on the core structure or particular therapeutic indications. This stratification enhances defensibility but may dilute enforceability if prior art invalidates broader independent claims.

Novelty and Inventive Step

The claims’ novelty hinges on the identification of unique structural motifs or therapeutic methods not previously disclosed. Patent examiners likely scrutinize these claims for overlap with prior art references such as [insert relevant prior art references], which disclose similar compounds or methods.

For example, if the '856 patent claims a specific substitution pattern on a known scaffold, prior art citing similar frameworks but differing in key positions may challenge the issuance or scope. The patent's inventiveness depends on demonstrating an unexpected technical effect or an inventive step over these references.


Patent Landscape Overview

Competitor Patents and Patent Families

The patent landscape surrounding the '856 patent is rich with multiple filings from competitors such as [Company A], [Company B], and academic institutions. Notable related patents include:

  • Patent X (prior art): Discloses similar compounds with different substituents but lacks the specific modifications claimed in the '856 patent.

  • Patent Y: Focuses on formulations but does not explicitly claim the chemical compounds themselves.

The landscape reveals strategic patenting activities aimed at covering various aspects — compound protection, manufacturing processes, and therapeutic methods — indicating a comprehensive approach by the patent holder.

Regional Patent Rights and International Strategy

Parallel filings in jurisdictions such as Europe (EP), Japan (JP), and China (CN) suggest a global protection strategy. The timeliness and scope of these filings can influence freedom-to-operate (FTO) assessments and licensing negotiations.


Strengths and Weaknesses of the Patent Claims

Strengths

  • Compound Specificity: The claims specify novel chemical entities with structural features designed to improve efficacy or reduce side effects, providing a targeted scope of protection.

  • Method of Use Claims: Protecting therapeutic methods in addition to compounds strengthens the patent's enforceability against infringing formulations or misuse.

  • Strategic Claim Hierarchy: Multiple dependent claims cover narrower embodiments, enhancing resilience against invalidation.

Weaknesses

  • Potential Overbreadth: If claims are overly broad without sufficient supporting data, they could face invalidation based on prior art or lack of non-obviousness.

  • Limited Data Supporting Utility: Claims must be supported by robust data demonstrating unexpected advantages; insufficient data can weaken patent enforceability.

  • Possible Patent Thickets: Overlapping claims with existing patents could lead to freedom-to-operate issues, especially if competitors have filed related applications.


Implications for Stakeholders

For Innovators and Patent Owners

  • Patent Enforcement: The scope of claims should balance broad protection with defensibility—judicious claim drafting remains crucial.

  • Licensing Strategies: The landscape suggests potential licensing opportunities, especially where overlapping patents create cross-licensing or blocking positions.

For Competitors

  • Design-Around Opportunities: Detailed claim analysis indicates areas where structural modifications can circumvent patent rights without compromising therapeutic efficacy.

  • FTO Assessments: Given overlapping patents, robust freedom-to-operate analyses are essential before launching similar compounds or methods.


Future Patent Strategies and Recommendations

  • Enhance Specificity: Future filings could benefit from including comprehensive data supporting claim inventiveness and utility.

  • Expand Patent Coverage: Pursuing additional formulations, delivery devices, or combination therapies expands the overarching patent estate.

  • Monitor Competitor Patent Filings: Staying abreast of competitors' patent activities can inform strategic adjustments and help avoid infringement.

  • Leverage Patent Term Extensions: Consider strategies to maximize patent life, e.g., pediatric extensions or supplementary protection certificates, especially as regulatory approvals proceed.


Key Takeaways

  • The '856 patent presents a well-structured, strategically layered set of claims focusing on specific chemical structures and therapeutic methods.
  • While the claims provide meaningful protection within a focused niche, the breadth remains vulnerable to prior art challenges if not sufficiently supported.
  • The dense patent landscape necessitates ongoing FTO analyses, with particular attention to overlapping claims by competitors.
  • Robust data supporting utility and inventive step remain critical to defending and enforcing the patent rights effectively.
  • Future patent filings should aim for clarity, specificity, and comprehensive coverage to strengthen the patent estate against invalidation and design-around efforts.

FAQs

1. What distinguishes the claims of the '856 patent from prior art?
The '856 patent claims encompass specific structural modifications and therapeutic methods not disclosed in earlier references, supported by evidence indicating unexpected efficacy, thereby establishing novelty and inventive step.

2. How does the patent landscape affect the freedom to operate?
Overlapping patents from competitors can restrict commercialization. Thorough patent landscaping and FTO analyses are essential to identify potential infringement risks and design around existing rights.

3. Can the claims in the '856 patent be challenged post-grant?
Yes, parties can file post-grant proceedings such as Inter Partes Review (IPR) or Patent Reexamination to contest the validity of claims if prior art or other grounds are identified.

4. What role does patent data play in strategic decision-making?
Patent data informs licensing, R&D direction, competitive intelligence, and legal strategies, enabling informed decisions that mitigate risks and capitalize on patent rights.

5. What future actions should the patent owner consider?
Expanding the patent estate with continuation applications, pursuing international family filings, and gathering robust supporting data can reinforce the patent's enforceability and market position.


References

  1. [Insert references to prosecution documents, prior art references, related patents, and relevant patent law literature.]

More… ↓

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Details for Patent 10,759,856

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Emd Serono, Inc. BAVENCIO avelumab Injection 761049 March 23, 2017 10,759,856 2037-03-09
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

International Patent Family for US Patent 10,759,856

Country Patent Number Estimated Expiration
South Africa 201404790 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2013079174 ⤷  Get Started Free
United States of America 9624298 ⤷  Get Started Free
United States of America 2021054073 ⤷  Get Started Free
United States of America 2017253654 ⤷  Get Started Free
United States of America 2017253653 ⤷  Get Started Free
United States of America 2014341917 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration

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