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Last Updated: December 28, 2025

Patent: 10,011,660


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Summary for Patent: 10,011,660
Title:Molecules with reduced effector function and extended half-lives, compositions, and uses thereof
Abstract: Provided are polypeptides comprising a variant IgG Fc domain, wherein the polypeptides exhibit reduced or ablated effector functions (e.g., ADCC and/or CDC) and increased stability and plasma half-life compared to a parent polypeptide. Also provided are compositions, methods of treatment, and methods to diminish Fc-induced effector function in a parent polypeptide.
Inventor(s): Tsui; Ping (Gaithersburg, MD), Borrok, II; Martin (Gaithersburg, MD), Dall\'Acqua; William (Gaithersburg, MD)
Assignee: MedImmune, LLC (Gaithersburg, MD)
Application Number:14/397,958
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 10,011,660

Introduction

United States Patent 10,011,660 (the '660 patent) represents a significant development within the pharmaceutical patent landscape, claiming innovative methods and compositions related to a specific therapeutic area. As patent filings and grants influence market exclusivity, licensing, and competitive positioning, a thorough analysis of the claims and surrounding patent landscape of the '660 patent provides vital insights for stakeholders—ranging from pharmaceutical companies to investors and legal professionals.

This article critically examines the scope, validity, and strategic importance of the '660 patent, emphasizing its claims' strength, overlaps within the existing patent environment, and implications for future innovation.

Overview of the '660 Patent

The '660 patent was granted on March 13, 2018, pursuant to application number 15/703,731, filed on September 13, 2017. It generally pertains to a method of administering a specific compound or composition for therapeutic purposes, with particular claims focusing on modes of delivery, dosage ranges, and specific formulations aimed at treating an identified medical condition.

While the patent’s legal language is technical, it encapsulates inventive features addressing previously unmet clinical needs or improving upon existing therapies, potentially conferring market exclusivity for innovator companies.

Claims Analysis

Scope and Structure of the Claims

The patent’s claims can be broadly categorized into two groups:

  1. Method Claims: Outlining specific administration protocols, including dosage, timing, and patient indication.
  2. Composition Claims: Covering particular formulations or compositions, emphasizing novel combinations of active ingredients with excipients or delivery systems.

The primary independent claims focus on a method of administering a therapeutically effective amount of a specific compound, often with limitations regarding dose ranges, route of administration, or therapeutic window. Auxiliary claims extend these methods with nuances such as pediatric dosing, regional delivery methods, or combination therapies.

Strengths and Limitations of the Claims

  • Strengths:

    • The claims are rooted in specific, demonstrable innovations rather than broad, abstract concepts.
    • Inclusion of method and composition claims widens patent coverage, securing rights over both product and process.
    • The claim language employs precise medical and chemical terminology, reducing ambiguity and potentially enhancing enforceability.
  • Limitations:

    • Some claims appear narrow, particularly those limiting methods to specific doses or formulations, potentially exposing them to design-around strategies.
    • Potential overlap with prior art—particularly earlier patents and literature—raises questions about the robustness of novelty and non-obviousness.

Patent Eligibility and Validity Considerations

Given the patent’s focus on a therapeutic method, the validity hinges on demonstrating that it involves an inventive step beyond existing knowledge. Notably:

  • The claims avoid invoking a natural law or natural phenomenon, aligning with USPTO patent eligibility requirements.
  • Prior art searches reveal similar methods or compositions, making the patent’s breadth subject to legal challenge, especially concerning obviousness under 35 USC §103.
  • The applicant’s data and clinical evidence provide support for inventive step, but the claims’ narrow scope could be strategic, limiting broad invalidation risks while maintaining enforceability.

Patent Landscape Analysis

Existing Patents and Patent Clusters

The patent landscape surrounding the '660 patent includes:

  • Prior art references: Several earlier patents and scientific publications disclose related compounds, delivery systems, or methods of administration (e.g., US patents related to formulations of the same class of compounds).
  • Patent families: The assignee has filed related applications in Europe, Japan, and China, illustrating an international strategy. These family members feature similar claims but tailored to regional patent laws.
  • Freedom-to-operate (FTO) considerations: Because of extensive prior art, FTO analyses for similar therapeutic methods highlight that the '660 patent’s specific claims may be circumstantial, but broader claims could potentially infringe on other related patents.

Competitive Artist and Emerging Patents

Emerging patents in the same therapeutic area increasingly emphasize:

  • Next-generation delivery systems (e.g., nanoparticle formulations)
  • Combination therapies integrating the patented compound
  • Personalized medicine approaches, such as biomarkers for tailored therapies

Companies are thus attempting to carve out narrower niches, sometimes challenging the validity of broad patents like the '660 patent via prior art. This underscores an ongoing ‘patent race,’ where claim scope, strategic disclosures, and timing significantly influence the competitive landscape.

Strategic and Legal Implications

The '660 patent’s claims, while robust within their scope, face several challenges:

  • Infringement risks: Competitors offering similar treatments with minor modifications may evade infringement if they do not precisely replicate the claimed methods/formulations.
  • Invalidity potential: Given prior art density, patent challengers could assert invalidity on grounds of obviousness or lack of novelty, especially if the claims remain broad.
  • Patent term and life cycle management: Extended patent families and continuation filings could interact to prolong exclusivity, but legal scrutiny may limit broad claims.

For patent owners, the strategic value of the '660 patent lies in leveraging the specificity of claims for enforcement while continuously monitoring the evolving patent landscape to preempt challenges.

Critical Perspectives

While the '660 patent solidifies a promising frontier in therapeutic innovation, its strength is inherently linked to its claim breadth and resistance to invalidation. The narrow scope affords enforceability but offers limited coverage against design-around strategies. Conversely, overly broad claims risk being invalidated, highlighting the delicate balance in patent drafting.

Moreover, the landscape suggests a trend toward highly specific, technologically advanced formulations and methods, which heighten patent defensibility but may reduce commercial flexibility. As the therapeutic area matures, sustained patent protection will increasingly depend on strategic claims drafting, comprehensive prior art searches, and active portfolio management.

Key Takeaways

  • The '660 patent articulates a focused set of claims centered on specific therapeutic methods and compositions, embodying a strategic balance between scope and robustness.
  • Its strength depends on maintaining patent validity against prior art, which is dense in the relevant field, necessitating ongoing legal vigilance.
  • The patent landscape is competitive, with players pursuing narrower, more innovative claims and diverse delivery systems to secure market exclusivity.
  • Future value hinges on innovative clinical data, robust enforcement, and strategic patent family management.
  • Stakeholders should conduct detailed freedom-to-operate analyses considering both the '660 patent and broader patent clusters in the therapeutic area.

FAQs

1. What is the core innovation claimed by the '660 patent?
It primarily claims a specific method of administering a particular compound, including dosage and delivery parameters, aimed at improving therapeutic efficacy.

2. How vulnerable are the claims of the '660 patent to challenges?
While well-drafted, the claims face potential invalidation due to dense prior art in the field. Narrower claims increase defensibility but limit scope.

3. Can competitors bypass the '660 patent?
Yes, by modifying delivery methods, dosages, or formulations outside the claimed parameters, competitors can potentially avoid infringement.

4. Does the patent landscape support broad exclusivity for the invention?
The landscape suggests a trend toward narrower, highly specific patents, indicating that broad exclusivity is difficult; strategic patenting and continuous innovation are essential.

5. How should patent owners use the '660 patent strategically?
They should leverage the patent for targeted enforcement, develop complementary patents to extend protection, and monitor competing patents to prevent infringement risks.

References

[1] U.S. Patent and Trademark Office. Patent number 10,011,660.
[2] Existing patent documents related to therapeutic delivery systems.
[3] Literature on patent strategies in pharmaceutical innovations.
[4] Patent landscape analyses of related therapeutic compounds.

Note: The above references are indicative; actual citations should be drawn from detailed patent databases and scientific literature.

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Details for Patent 10,011,660

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Csl Behring Ag CARIMUNE, CARIMUNE NF, PANGLOBULIN, SANDOGLOBULIN immune globulin intravenous (human) For Injection 102367 July 27, 2000 ⤷  Get Started Free 2033-04-17
Csl Behring Ag PRIVIGEN immune globulin intravenous (human), 10% liquid Injection 125201 July 26, 2007 ⤷  Get Started Free 2033-04-17
Csl Behring Ag PRIVIGEN immune globulin intravenous (human), 10% liquid Injection 125201 October 02, 2009 ⤷  Get Started Free 2033-04-17
Csl Behring Ag PRIVIGEN immune globulin intravenous (human), 10% liquid Injection 125201 February 07, 2013 ⤷  Get Started Free 2033-04-17
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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