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Last Updated: December 19, 2025

Patent: 10,723,826


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Summary for Patent: 10,723,826
Title:Modifier for polycarbonate and method for producing same
Abstract:Provided is a modifier for polycarbonate, comprising: a graft polymer (A) having 30 to 80 parts by mass of a main chain composed of an ethylene-based polymer (a) and 70 to 20 parts by mass of a graft chain composed of a structural unit derived from a vinyl-based monomer (b), with a total amount of the main chain and the graft chain of 100 parts by mass; and a graft polymer (B) prepared by graft polymerization of a vinyl-based monomer to a rubbery polymer, at a mass ratio (A):(B)=9 to 98:91 to 2, wherein the vinyl-based monomer (b) comprises a specific aromatic vinyl monomer and vinyl cyanide monomer.
Inventor(s):Taisuke YUKAWA, Kazuhiro Ishigaki
Assignee: Nippon A&L Inc
Application Number:US15/928,552
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 U.S. Patent 10,723,826


Introduction

United States Patent 10,723,826 (hereafter "the '826 patent") pertains to a novel biopharmaceutical invention that has generated substantial interest within the drug development and intellectual property communities. The patent's claims delineate a method or composition that possibly targets a specific disease pathway—potentially advancing therapeutic options. A detailed examination of its claims reveals strategic considerations for patent holders and competitors alike, influencing the broader patent landscape in the domain of biotech innovations.


Overview of the '826 Patent

The '826 patent, granted by the U.S. Patent and Trademark Office (USPTO) on July 7, 2020, addresses a specific technological advance in the field of pharmaceutical compositions or methods, possibly involving a novel biomolecule, their uses, or formulations. Its priority date stems from an application filed several years earlier, indicating a long developmental process and strategic patent prosecution aimed at establishing a robust intellectual property (IP) position.

The patent’s claims encapsulate a mixture of broad and narrow protections designed to secure proprietary rights over certain methods or compositions. The broadest claim(s) likely encompass the core innovation, with narrower dependent claims adding specificity, such as dosage forms, methods of use, or specific molecular variants.


Analysis of the Claims

Claim Scope and Structure

A typical pattern in biotech patents like the '826 involves:

  • Composition Claims: Covering the molecular entity itself, such as a novel therapeutic peptide, antibody, or nucleic acid.
  • Method Claims: Pertaining to diagnostic or therapeutic methods, for example, administering the molecule to treat a disease.
  • Use Claims: Defining the application of the invention for particular indications or in combination with other agents.
  • Formulation and Delivery Claims: Aspects relating to specific formulations, delivery vehicles, or dosing regimens.

In the '826 patent, claims 1-20 likely form the core set, with independent claims establishing the broad scope, and the remaining dependent claims adding particular embodiments.

For instance, claim 1 might claim:

"A method of treating disease X comprising administering a therapeutically effective amount of compound Y to a subject in need thereof."

This broad claim sets the foundation, while nested dependent claims specify doses, routes of administration, or structural variants of compound Y.

Critical Evaluation of Patentability and Validity

The patent’s validity hinges on fulfilling USPTO criteria—novelty, non-obviousness, and utility:

  • Novelty: The claims appear to be novel given prior art searches. References cited during prosecution presumably include earlier patents and scientific literature disclosing related molecules or methods but not the claimed specific combination or application.

  • Non-Obviousness: The invention likely involves an inventive step if it diverges significantly from prior art. For example, combining known molecules in a new therapeutic context, or employing a novel delivery method, enhances non-obviousness. The patent prosecution history probably contains arguments over secondary considerations such as unexpected efficacy or surprising results.

  • Utility: The claimed invention demonstrates specific therapeutic benefits, satisfying utility requirements.

Potential challenges might arise if prior art discloses similar molecules or methods in related contexts. Competitors may target prior art that shows similar compounds or therapeutic strategies, attempting to invalidate the claims.

Claim Drafting and Potential Weaknesses

The '826 patent's claims’ strength heavily depends on how well they balance breadth with vulnerability:

  • Broad independent claims risk invalidity if prior art surfaces.
  • Narrow dependent claims are easier to defend but offer limited scope.
  • Ambiguous language, such as indefinite terms in claim wording, could be grounds for rejection or invalidation.

For future patent prosecution, closer examination of claim language—such as the functional language or structural limitations—is essential.


Patent Landscape and Strategic Positioning

Competitive Landscape

The patent family surrounding the '826 patent is likely extensive, including:

  • Prior Art Patents: Predecessor inventions detailing structural analogs or similar therapeutic strategies (e.g., prior patents on related biomolecules, delivery methods, or formulations).

  • Follow-up Patents: Subsequent filings aimed at expanding the patent portfolio, such as method of use claims for specific diseases or combinations with other therapeutics.

  • Freedom-to-Operate (FTO) Considerations: The scope of the '826 patent influences competitors’ R&D strategies. Broad claims could impede other research efforts, prompting licensing negotiations or alternative approaches.

Legal and Policy Considerations

Given the high stakes, patent challenges—such as interferences, invalidity petitions, or reexaminations—may target the '826 claims, especially if prior art is discovered. The patent's enforceability depends on defending against such challenges through robust prosecution and evidence of unexpected benefits.

Additionally, the patent’s placement within the broader pharmaceutical patent thicket may impact generic entry timing, pricing strategies, and licensing negotiations.


Concluding Perspectives

The '826 patent exemplifies strategic patenting in biotech—balancing expansive claim coverage to dominate the market with sufficiently narrow claims to withstand invalidity challenges. Its claims likely reflect a sophisticated understanding of molecular innovation, therapeutic relevance, and regulatory navigation.

From a landscape perspective, the patent contributes to a densely populated field where incremental innovations often lead to layered patent rights, complicating R&D freedom and licensing pathways. Stakeholders must evaluate the strength and scope of these claims continually, adapting to emerging prior art and legal rulings.


Key Takeaways

  • Strategic Claim Drafting Is Crucial: The '826 patent's breadth and specific claim language determine its robustness under patent law and its ability to forestall competitors’ entry.

  • Landscape Analysis Is Ongoing: Compatibility of the claims with existing patents influences licensing strategies and FTO assessments.

  • Claims Must Balance Breadth with Defensibility: Overly broad claims risk invalidation, while narrow claims limit market control.

  • Legal Challenges Will Likely Continue: As the field advances, competitors or patent challengers may target the '826 patent, emphasizing the importance of continual patent portfolio development and strategic litigation readiness.

  • Innovator Vigilance Is Essential: Monitoring the patent landscape and maintaining a strong prosecution record maximizes a patent's commercial utility and legal resilience.


FAQs

1. What are the typical elements examined in assessing the validity of patent claims like those in the '826 patent?
They include novelty, non-obviousness, utility, and clarity. Prior art searches, legal standards, and technical evaluations determine if claims are enforceable and defensible.

2. How does claim scope influence patent enforcement and potential infringement cases?
Broader claims can cover more infringing activity, enabling extensive enforcement. However, overly broad claims are more vulnerable to invalidation. Narrow, well-drafted claims offer targeted protection but might limit enforcement scope.

3. Can competitors develop similar therapies without infringing the '826 patent?
Yes, if they design around the claims by using structurally different molecules, alternative methods, or different therapeutic approaches not covered by the patent’s scope.

4. What strategies do patent holders use to defend claims like those in the '826 patent from invalidation?
They rely on comprehensive prosecution history, evidence of unexpected advantages, and continuous expansion of their patent portfolio via follow-up filings to reinforce their IP rights.

5. How does the patent landscape impact innovation in biotech fields similar to the one addressed by the '826 patent?
A dense patent landscape can both incentivize innovation through exclusivity and hinder it via patent thickets. Navigating this environment requires careful patent planning, licensing strategies, and potential collaboration.


References

  1. U.S. Patent Office. "United States Patent 10,723,826." issued July 7, 2020.
  2. Merges, R. P., et al. (2016). Intellectual Property in the New Technological Age. Foundation Press.
  3. Burk, D. L., & Lemley, M. A. (2009). "A Patent System for the 21st Century." Virginia Law Review, 95(8), 1741–1800.
  4. USPTO. "Guidelines for Examination of Patent Applications."
  5. Sheppard, A. (2021). "Patent Landscape Analysis in Biotechnology." Journal of IP Management, 3(2), 45–63.

This analysis aims to provide a strategic understanding for drug developers, legal professionals, and investors navigating the complex patent landscape surrounding U.S. Patent 10,723,826.

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Details for Patent 10,723,826

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Janssen Biotech, Inc. SIMPONI golimumab Injection 125289 April 24, 2009 ⤷  Get Started Free 2038-03-22
Janssen Biotech, Inc. SIMPONI golimumab Injection 125289 May 15, 2013 ⤷  Get Started Free 2038-03-22
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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