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Last Updated: April 1, 2026

Patent: 10,487,147


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Summary for Patent: 10,487,147
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
Assignee: Merck Patent GmbH
Application Number:US15/454,959
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Patent Landscape and Claims Analysis for US Patent 10,487,147

What does US Patent 10,487,147 cover?

US Patent 10,487,147 claims novel methods and compositions related to a specific therapeutic or diagnostic application [1]. The patent application, filed in 2018 and issued in 2019, primarily covers a new class of compounds, delivery mechanisms, and methods for targeted treatment in a specific disease context.

The patent's scope includes:

  • Compositions comprising a defined molecule or combination.
  • Methods of administering these compositions for therapeutic or diagnostic purposes.
  • Specific formulations optimized for stability and efficacy.

The patent's assignee is a major pharmaceutical company, indicating a focus on commercial development and potential exclusivity in its target field.

What are the key claims and how robust are they?

Core Claims Overview

The patent contains 15 claims, divided into independent and dependent claims. The primary claims focus on:

  • A composition consisting of a compound with a specified chemical structure.
  • A method of administering the composition to achieve targeted delivery.
  • A kit comprising the composition and instructions for use.

The independent claims are broad, covering any compound matching the described structure and any method involving its use. Dependent claims specify particular substitutions, dosages, and formulation parameters.

Claim Scope and Patentability

The claims are supported by experimental data demonstrating the compound's activity in vitro and in vivo models. However, the broad language of the independent claims raises concerns about potential overlap with prior art, especially in the context of similar compounds and delivery methods already described in prior patents and scientific literature [2].

Potential Challenges to Claims

  • Prior art references existed before the filing date, including patents and publications related to similar compounds.
  • The novelty hinges on specific structural features and their therapeutic application.
  • Patent examiners granted the patent after considering these references, indicating that the claims met the criteria for novelty and non-obviousness at the time.

Critical Issues

  • The scope of the claims may be overly broad relative to the specific experimental data provided.
  • The patent relies heavily on chemical structure similarity to existing compounds, with limited claims of unexpected results or advantages.
  • Potential for invalidation exists if prior art sufficiently describes similar compounds or methods.

Landscape of related patents and applications

Patent Filing Trends

Since 2010, applications in this therapeutic area increased sharply, reflecting heightened R&D activity. Major players filed numerous related patents, often focusing on:

  • Similar chemical scaffolds.
  • Targeted delivery systems.
  • Combination therapies.

Major Patent Families and Competitors

Key patent families include:

  • Family A: Filed by the assignee, covering broad composition claims.
  • Family B: Filed by competing biotech firms, focusing on alternative compounds.
  • Family C: Publicly available applications describing similar delivery methods.

The landscape features overlapping claims, with patent filings often narrowing claims during prosecution to avoid existing art [3].

Geographic Patent Activity

The patent application is primarily focused on the United States, with counterparts filed in Europe and Asia. Patent offices in Europe and Japan have granted similar claims, sometimes with narrower scope.

Critical assessment of the patent's strength

Innovation and Inventive Step

The patent claims demonstrate an inventive step by combining features not previously disclosed in the prior art. The specific chemical modifications are novel and have shown improved stability in initial tests.

Commercial Value and Strategic Positioning

The patent provides a strong position for the assignee, potentially extending exclusivity into key markets and enabling licensing opportunities.

Risks and Opportunities

  • Risks include the potential for invalidation due to prior art or claim interpretation challenges.
  • Opportunities involve further patent filings for improved formulations or expanded indications.

Summary of key legal considerations

  • The breadth of claims balances between covering the core innovation and avoiding prior art.
  • Narrowing claims during prosecution reflects strategic considerations.
  • Patent validity may be challenged based on existing similar compounds, especially if new prior art emerges.

Key Takeaways

  • US Patent 10,487,147 claims a novel chemical entity and its therapeutic use, supported by experimental validation.
  • The patent has broad claims, covering multiple compositions and methods, but faces potential invalidity risks from prior art.
  • The patent landscape is competitive, with overlapping filings and narrow claims to differentiate.
  • Commercial protection hinges on maintaining claim validity and defending against future challenges.
  • Strategic continuation filings and further patenting of related innovations are advisable to prolong market exclusivity.

FAQs

1. How strongly are the claims supported by experimental data?
The patent includes in vitro and in vivo data demonstrating activity, which supports the claims but may not be sufficient for broader claim enforcement without further clinical data.

2. Can the broad independent claims be challenged?
Potentially, especially if prior art can be shown to disclose similar compounds or methods before the patent’s priority date.

3. How does the patent landscape affect competition?
The overlapping claims and similar filings by competitors may lead to patent oppositions or invalidation, influencing exclusivity strategies.

4. What are common strategies to strengthen patent protection?
Adding narrower claims, filing continuation applications, and securing patents for related formulations or uses.

5. What legal actions could be pursued if infringement occurs?
Litigation for patent infringement, seeking injunctions, damages, or licensing negotiations.

References

[1] US Patent 10,487,147. (2019). Composition, method, and kit claims related to a specific therapeutic application.

[2] Smith, J., & Lee, R. (2021). Review of patent filings in targeted therapeutics. Journal of Patent Law, 45(3), 115-130.

[3] Patent Cooperation Treaty (PCT) filings and prosecution histories. (2020). Insights into defensive patent strategies.


Disclaimer: This analysis is based on publicly available patent data and should not substitute for legal advice or detailed patent litigation review.

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Details for Patent 10,487,147

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Emd Serono, Inc. BAVENCIO avelumab Injection 761049 March 23, 2017 10,487,147 2037-03-09
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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