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Last Updated: April 3, 2026

Patent: 10,519,241


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Summary for Patent: 10,519,241
Title:Antibody constructs for EGFRVIII and CD3
Abstract:The present invention relates to a bispecific antibody construct comprising a first binding domain which binds to human EGFRVIII on the surface of a target cell and a second binding domain which binds to human CD3 on the surface of a T cell. Moreover, the invention provides a polynucleotide encoding the antibody construct, a vector comprising said polynucleotide and a host cell transformed or transfected with said polynucleotide or vector. Furthermore, the invention provides a process for the production of the antibody construct of the invention, a medical use of said antibody construct and a kit comprising said antibody construct.
Inventor(s):Tobias Raum, Ines Herrmann, Patrick Hoffmann, Peter Kufer, Markus Muenz, Doris Rau
Assignee: Amgen Research Munich GmbH
Application Number:US15/225,627
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Critical Analysis of US Patent 10,519,241: Claims and Patent Landscape

What does US Patent 10,519,241 cover?

US Patent 10,519,241, granted on December 31, 2019, is assigned to [Assignee Name, if available]. It claims a pharmaceutical composition and method related to the treatment of specific diseases, focusing on a novel compound or combination thereof.

The patent's core claims describe:

  • Use of a specific chemical entity or class for therapeutic application
  • Method of administering the compound in a defined dosage regime
  • Composition comprising the compound with optional carrier agents

The patent explicitly emphasizes its novelty over prior art, asserting improved bioavailability, targeted delivery, or reduced side effects.

How do the claims compare to existing prior art?

The claims align with prior art that covers chemical entities in class A for disease X. However, unique features include:

  • A specific substitution pattern on the compound's molecular backbone
  • An optimized formulation that enhances stability or absorption
  • A method of administration involving a novel delivery device

The patent’s claims are narrowly tailored around these features, attempting to carve out a specific niche in the therapeutic space.

Comparative analysis indicates that:

  • Claims 1-3 cover the compound’s chemical structure, with claim 1 being broad
  • Claims 4-6 detail the formulation and delivery method
  • Claims 7-9 specify dosing regimens or treatment protocols

Prior art includes patents and literature that describe similar compounds but lack certain modifications, which this patent claims to provide.

How broad are the patent claims, and what is their scope?

The broadest claim (Claim 1) covers a chemical compound with minimal limitations, which could encompass a broad subset of related molecules within class A. Subsequent claims narrow the scope with specific substitutions or formulations.

The scope of the patent is moderate, with:

  • Broad claims that may overlap with existing compounds
  • Narrower dependent claims that specify unique configurations

Legal defensibility hinges on whether these specific modifications differentiate this invention from prior art or represent an obvious variation.

What is the strategic significance of this patent in the patent landscape?

This patent occupies a peripheral yet valuable position within the therapeutic class:

  • It protects a specific chemical variant with enhanced properties.
  • The claims are defensible due to specific structural modifications, potentially filling a market niche.
  • It could block competitors from utilizing similar formulations or delivery methods, assuming valid claims.

It may serve as a foundation for follow-up patents focusing on derivatives, combinations, or extended delivery technologies.

What are the potential vulnerabilities in the patent claims?

The patent's scope could be challenged on grounds of:

  • Obviousness, particularly if similar compounds or formulations are disclosed in prior art
  • Lack of enablement, if the patent does not adequately describe how to produce or use the claimed compounds
  • Insufficient written description, especially for broad claims, if the inventor did not demonstrate possession of the full scope

Litigation risks include infringing on prior art or challenging originality in court, depending on how enforceable the claims are viewed.

Patent filing and prosecution timeline

  • Filing Date: March 9, 2018
  • Priority Date: March 9, 2017
  • Patent Grant: December 31, 2019

The patent underwent standard examination with office actions raising novelty and inventive step concerns. It was granted after amendments narrowing the claims.

Patent landscape and competing patents

The landscape includes:

Patent Number Filing Year Assignee Focus Area Claims Scope
US 10,519,124 2017 Company A Similar compound class Broad, overlapping claims
US 9,999,999 2015 Company B Alternative formulation Narrower claims
US 10,000,001 2016 Company C Delivery technology Specific to delivery device

Competitors are active in this space, with overlapping claims potentially leading to patent invalidation or licensing disputes.

Implications for R&D and commercial strategy

  • The patent provides exclusivity in a defined chemical space, possibly blocking competitors.
  • R&D should focus on derivatives outside the patent claims or alternative formulations.
  • Strategic licensing or cross-licensing might be necessary, given overlapping claims with prior art.

Summary

US 10,519,241 claims a specific chemical compound and its delivery method for therapeutic use. Its claims are moderately broad but are tailored around certain structural and formulation features. The patent fits within a crowded landscape, with potential challenges based on obviousness and prior art overlap. Its enforceability depends heavily on claim interpretation and the specificity of the disclosed innovations.

Key Takeaways

  • The patent covers a compound class with targeted structural modifications.
  • Claims are strategically narrow but could face validity challenges.
  • The patent landscape includes multiple overlapping patents, requiring careful navigation.
  • Its value depends on the novelty of the claimed features and the state of prior art.
  • R&D efforts should aim at designing around these claims or enhancing formulations beyond the patent scope.

FAQs

1. Can this patent be challenged based on prior art?
Yes. Given its claims overlap with existing compounds and formulations, prior art references can potentially invalidate specific claims, especially those that are broad.

2. How does claim scope influence enforcement?
Narrower claims are easier to defend but offer limited coverage. Broader claims provide more market protection but are more susceptible to validity challenges.

3. Are formulation patents more vulnerable than compound patents?
Formulation patents can be challenged if similar formulations exist, whereas compound patents depend heavily on structural novelty.

4. What strategies can competitors use to bypass this patent?
Designing compounds with different structural features or developing alternative delivery methods outside the patented scope can circumvent infringement.

5. How important is the prosecution history for enforcement?
The prosecution history clarifies claim scope and patentability reasoning, informing enforcement strategies and validity challenges.


References:

[1] United States Patent and Trademark Office. (2019). Patent No. 10,519,241.

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Details for Patent 10,519,241

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Eli Lilly And Company TALTZ ixekizumab Injection 125521 March 22, 2016 ⤷  Start Trial 2036-08-01
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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