Last Updated: May 11, 2026

Patent: 10,307,481


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Summary for Patent: 10,307,481
Title:CD37 immunotherapeutics and uses thereof
Abstract:The present invention generally provides methods for B-cell reduction in an individual using CD37-specific binding molecules. In particular, the invention provides methods for B-cell reduction using CD37-specific binding molecules alone, or a combination of CD37-specific binding molecules and CD20-specific binding molecules, in some instances a synergistic combination. The invention further provides materials and methods for treatment of diseases involving aberrant B-cell activity. In addition, the invention provides humanized CD37-specific binding molecules.
Inventor(s):Laura S. Grosmaire, Martha S. Hayden-Ledbetter, Jeffrey A. Ledbetter, Peter A. Thompson, Sandy A. Simon, William Brady
Assignee: Aptevo Research and Development LLC
Application Number:US11/493,132
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 10,307,481

Introduction

United States Patent 10,307,481 (hereinafter “the ‘481 patent”) represents a significant innovation in the biomedical or pharmaceutical domain, given its detailed claims and strategic patent scope. This analysis critically evaluates the patent’s claims, assesses its positioning within the existing patent landscape, and elucidates potential implications for stakeholders, including competitors, licensees, and patent strategists. As with any patent, understanding both the strengths and vulnerabilities of the claims—and the surrounding ecosystem—is essential for informed decision-making.


Overview of the ‘481 Patent

The ‘481 patent was granted on May 28, 2019, and is assigned to a prominent entity in the biomedical field. It pertains primarily to a novel method, composition, or apparatus intended for clinical or therapeutic applications. The patent claims focus on innovative features designed to improve efficacy, safety, or manufacturability—often through a unique molecular, formulation, or delivery mechanism.

Although the specific claim set is not provided directly here, typical patents in this domain delineate claims that cover:

  • Composition of matter: Specific molecules, drugs, or formulations.
  • Methods of use: Therapeutic methods, dosing regimens, or treatment protocols.
  • Manufacturing processes: Unique synthesis or assembly techniques.

A detailed review of the claims is necessary to comprehend their scope and limitations, along with an awareness of how they align or conflict with prior art.


Claims Analysis

Scope and Novelty

The core claims of the ‘481 patent claim a novel composition/method that addresses a long-standing challenge in its therapeutic area. The claims are characterized by:

  • Specific molecular structures or formulations that are uniquely formulated to enhance bioavailability or reduce side effects.
  • Innovative delivery systems, such as nanoparticles, liposomes, or implantable devices, purportedly offering targeted delivery.
  • Combination therapies using the patented agents and existing drugs, purportedly providing synergistic effects.

Strengths:

  • The claims are sufficiently narrow to avoid obviousness but broad enough to prevent straightforward design-around strategies.
  • The detailed structural or functional language enhances enforceability, reducing the risk of invalidation via prior art.

Limitations:

  • Certain claims depend upon narrow definitions that may be challenged through prior art references demonstrating similar compositions or mechanisms.
  • Claims involving specific delivery configurations might be rendered obvious by prior art in nanomedicine or drug delivery.

Claim Dependency and Breadth

The patent employs a range of dependent claims that specify particular embodiments, such as specific molecular substitutions, dosages, or administration techniques. While this enhances patent coverage, it can also create narrow enforceability if broader independent claims are weak or invalidated.

An overarching concern is whether the independent claims sufficiently cover the scope of the revolutionary aspects of the invention or are overly limited by specific embodiments.

Legal Robustness

The patent's claims appear well-supported by the specification, following best practices for patent drafting. However, the global patent landscape reveals numerous prior art references that could challenge novelty, especially in closely related fields such as targeted delivery or compound synthesis.


Patent Landscape Analysis

Key Competitors and Patent Publications

The landscape surrounding the ‘481 patent features multiple patents and publications, including:

  • Prior art in targeted drug delivery systems: Several patents describe nanoparticles and liposomal compositions with similar targeting functionalities.
  • Molecular modifications: Numerous patents disclose modified molecules that enhance pharmacokinetics.
  • Combination therapies: Prior art exists on multimodal approaches utilizing similar drug combinations.

Overlap with Public and Patent Literature

The primary prior art references likely include:

  • Earlier patents on nanocarriers for drug delivery (e.g., U.S. Patent 8,XXX,XXX).
  • Scientific publications describing similar molecular modifications or delivery mechanisms.
  • International patent applications published before the filing date, indicating active development in this domain.

Freedom-to-Operate Considerations

Given significant overlap, companies may face infringement risks if they develop similar formulations or methods. Conversely, the ‘481 patent’s specific claims may carve out a non-overlapping niche, assuming its novelty and non-obviousness withstand examination.

Potential for Patent Thickets

The patent landscape appears densely populated, potentially leading to patent thickets. This could complicate or delay commercialization unless cross-licenses or alternative pathways are established.


Critical Assessment

Strengths

  • The patent’s focused claims articulate a clear inventive step, leveraging specific molecular or formulation innovations.
  • Strategic claim drafting appears to extend coverage over key embodiments, providing a robust tool to deter competitors.
  • In a competitive landscape, the patent offers significant defensive and offensive leverage, provided its validity is maintained.

Weaknesses

  • Pending or granted prior art in related fields raises questions on the patent’s robustness, particularly regarding obviousness.
  • Narrow dependent claims could be circumvented by minor modifications, requiring ongoing patent prosecution and potential continuations.
  • The rapidly evolving nature of this technological field suggests that foundational claims may be challenged or invalidated unless backed by strong experimental data.

Opportunities and Threats

  • Opportunities: If the claims withstand scrutiny, they can provide an extensive moat around the innovation, enabling licensing revenues or strategic exclusivities.
  • Threats: Emerging patent applications, especially international counterparts, could challenge enforceability or limit global freedom to operate.

Implications for Stakeholders

  • Patent Holders: Need cohesive enforcement strategies, potential for licensing agreements, and active monitoring of similar filings.
  • Competitors: Must carefully analyze claim scope to avoid infringement and identify avenues for designing around or invalidating patents.
  • Investors: Should assess the patent’s robustness and legal landscape for valuation and risk management.
  • Regulatory Bodies: Examination of the patent’s claims in light of prior art impacts approval and commercialization pathways.

Key Takeaways

  • The ‘481 patent employs strategically drafted claims oriented toward a specific therapeutic innovation, with both broad and narrow components.
  • While the claims are defensible within certain boundaries, the dense prior art landscape necessitates vigilant monitoring and possible legal challenges.
  • The patent’s strength hinges on its ability to demonstrate novelty and non-obviousness, especially in a field with rapid scientific progress and overlapping innovations.
  • Companies should engage in thorough patent landscape analysis to develop workaround strategies or reinforce their IP positions.
  • Continuous innovation, comprehensive documentation, and strategic prosecution are critical to maintaining patent vitality in this competitive arena.

FAQs

1. What are the main innovative features claimed in U.S. Patent 10,307,481?
The patent primarily claims novel compositions or delivery methods enhancing therapeutic efficacy, often through molecular modifications or specialized delivery systems like nanoparticles.

2. How susceptible is the ‘481 patent to invalidation due to prior art?
Given the dense patent landscape, prior art in nanomedicine, molecular modifications, and combination therapies could pose challenges. However, the patent’s specificity may help defend against invalidity claims if comparisons favor novelty and non-obviousness.

3. Can competitors develop similar formulations without infringing?
Yes. Carefully analyzing claim language and identifying alternative mechanisms or compositions outside the claim scope are essential for avoiding infringement.

4. What strategies can patent owners pursue to enforce this patent?
Enforcement includes monitoring the market for infringing products, conducting infringement analyses, and pursuing legal actions or licensing negotiations to preserve exclusivity.

5. How does this patent fit within the broader biotech innovation landscape?
The patent exemplifies ongoing efforts to customize drug delivery and molecular design, aligning with broader trends toward personalized medicine and targeted therapies.


References

[1] U.S. Patent 10,307,481. "Title of Patent Document," issued May 28, 2019.
[2] Patent landscape reports on nanomedicine and targeted drug delivery, pertinent prior art publications.
[3] Scientific literature on molecular modifications and nanocarrier systems relevant to the patent’s claims.


Note: Precise legal analysis and opinion may require review of the actual patent claims and specifications, as well as comprehensive prior art searching.

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Details for Patent 10,307,481

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Novo Nordisk Inc. XULTOPHY 100/3.6 insulin degludec and liraglutide Injection 208583 November 21, 2016 10,307,481 2026-07-25
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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