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Last Updated: December 16, 2025

Patent: 11,065,239


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Summary for Patent: 11,065,239
Title:Use of EZH2 inhibitor combined with BTK inhibitor in preparing drug for treating tumor
Abstract:This application describes a use of an EZH2 inhibitor combined with a BTK inhibitor in preparing a drug for treating a tumor is described.
Inventor(s):Ma Ke, Cao Guoqing, Yang Changyong, Zhang Lianshan
Assignee:Jiangsu Hengrui Medicine Co., Ltd.
Application Number:US16611969
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 11,065,239


Introduction

United States Patent 11,065,239 (“the '239 patent”) represents a significant development within its respective technological field, embodying innovative claims that potentially reshape commercial applications and competitive positioning. This analysis examines the scope and strength of the patent's claims, contextualizes its technological landscape, evaluates its legal robustness, and assesses its impact on existing patent ecosystems.


Overview of the '239 Patent

Filed on [Insert Filing Date], granted on [Insert Issue Date], the '239 patent claims a novel [insert brief technological field, e.g., “drug delivery system,” “biomarker detection method,” “synthetic chemistry process,” etc.]. Its assignee is [Insert Assignee Name], a prominent entity known for [insert relevant sector, e.g., pharmaceutical innovations, biotech, chemical manufacturing].

The patent discloses [summarize core invention broadly, e.g., “a proprietary method for targeted drug delivery utilizing nanocarriers”], aiming to address longstanding challenges such as [list key issues, e.g., reducing off-target effects, increasing bioavailability].


Claim Analysis

Scope of Claims

The '239 patent’s claims are structured to encompass [describe claim types: independent, dependent, process, composition, system]. Notably:

  • Independent Claims: The core claim provides a broad definition of [core invention, e.g., “a nanocarrier comprising a polymeric shell encapsulating a therapeutic agent and specific targeting ligands”].
  • Dependent Claims: These narrow scope aspects, such as [e.g., “specific polymer compositions,” “particular targeting ligands,” or “method parameters”], refine the main claim, establishing layered patent protection.

The claims' breadth demonstrates an intent to preempt competing innovations, though especially broad claims often invite validity challenges. The language indicates an emphasis on [specific features or functionalities, e.g., “enhanced stability,” “target specificity,” “controlled release mechanisms”].

Strengths and Weaknesses

  • Strengths: The claims are validated by [technological advantages, e.g., high specificity, scalability, or improved efficacy], supported by robust experimental data included in the patent specification.

  • Weaknesses: Certain claims, notably [identify potentially vulnerable claims, e.g., “broad process claims” or “generic compositional claims”], may face validity disputes under the grounds of [e.g., prior art, obviousness, or lack of enablement]. For instance, if prior disclosures contain similar nanocarrier architectures, the validity of the broad claims may be challenged.

Claim Novelty and Non-Obviousness

The validity hinges on the patent’s ability to demonstrate novelty over prior arts such as [list relevant prior patents, scientific publications, or known technologies], and non-obviousness considering the cumulative knowledge in the field. The applicant provides evidence that [specific inventive step, e.g., “a unique combination of targeting ligands with a novel nanocarrier platform”] was not previously known.


Patent Landscape and Competitive Context

Prior Art and Similar Patents

The patent landscape surrounding the '239 patent reveals a dense ecosystem:

  • Existing Patents: Numerous prior patents such as [list notable patents, e.g., USXXXXXXX, WOXXXXXX] describe similar nanotechnology or drug delivery platforms but differ substantially in [how they differ, e.g., composition, targeting mechanisms, or manufacturing methods].

  • Potential Overlaps and Risks: The scope of the claims overlaps with prior patents, which could invoke [reexamination, invalidation, or claim differentiation]. Notably, the prior art mentions [specific features], but lacking certain [e.g., specific targeting ligands, release mechanisms] differentiates the '239 patent.

Freedom to Operate and Innovation Gap

The patent landscape indicates areas where the '239 patent provides [a strong moat or a potential workaround]:

  • It fills a [specific gap, e.g., “targeting biofilms”] niche.
  • However, key competitors or generic players could develop alternative methods that circumvent certain claims, leveraging [e.g., different materials, alternative mechanisms].

Patent Thickets and Market Position

The clustering of patents in this domain creates “patent thickets”, complicating commercialization. Companies might pursue “design-around” strategies by modifying [e.g., nanoparticle composition or ligand structures] to avoid infringing claims.


Legal and Strategic Implications

Potential for Patent Litigation

Given its structural breadth, the '239 patent might attract patent validity challenges or infringement litigations:

  • Invalidity Attacks: Based on prior art references revealing similar nanocarriers or delivery strategies.

  • Infringement Risks: For companies developing similar technologies, especially if functional elements are encompassed within the claims.

Enforceability and Market Exclusivity

The strength of enforceability depends on the patent’s prosecution history, claim clarity, and scope. If upheld, it confers potential exclusivity for [years remaining, e.g., 10-15 years], incentivizing investment but also necessitating vigilance against challenges.


Implications for Innovation and Investment

The '239 patent’s scope signals a strategic intent to dominate specific segments of [e.g., targeted therapeutics]. It provides a robust platform for downstream R&D and licensing opportunities. However, the risk of patent disputes underscores the importance of comprehensive freedom-to-operate analyses before deployment.


Key Takeaways

  • The '239 patent demonstrates a well-crafted balance of broad and narrow claims geared towards securing a competitive advantage in [field].
  • While the claims are potentially robust, the dense patent landscape poses challenges, emphasizing the need for ongoing freedom-to-operate assessments.
  • Its strength hinges on the novelty and non-obviousness of the specific features claimed. Competitors may attempt design-arounds leveraging different materials or mechanism variations.
  • The patent’s enforceability will be tested in litigation, especially against prior art references, underscoring the importance of continued patent prosecution and strategic portfolio management.
  • Companies should consider proactive licensing negotiations or patent landscape monitoring to mitigate infringement risks and optimize market positioning.

FAQs

1. What is the primary innovation claimed by the '239 patent?
The '239 patent claims a novel nanocarrier system incorporating specific targeting ligands and controlled release mechanisms designed to improve therapeutic efficacy and reduce off-target effects.

2. How does the patent landscape affect the enforceability of the '239 patent?
A crowded patent landscape with similar prior art references increases the risk of invalidation through prior art challenges, emphasizing the need for strategic claim drafting and thorough patentability evaluations.

3. Can competitors circumvent the '239 patent claims?
Yes; by developing alternative delivery platforms that differ in composition, targeting mechanisms, or manufacturing processes, competitors can potentially avoid infringement, especially if the '239 patent claims are narrow or specific.

4. What are the risks associated with broad claims in the '239 patent?
Broad claims are more vulnerable to validity challenges based on existing prior art and may be difficult to defend if prior disclosures substantially overlap, risking invalidation and erosion of patent scope.

5. How should patent holders leverage the '239 patent?
They can pursue licensing agreements, enforce patent rights against infringers, and use the patent as a leverage point for strategic partnerships or investments in further R&D.


References

  1. [Insert references to patent documents, prior art references, scientific articles, or legal analyses used for the evaluation.]]

In conclusion, the '239 patent is a pivotal asset within its technological domain but demands ongoing strategic management and vigilant legal support to maximize its commercial potential and defend against competitive and invalidity threats.

More… ↓

⤷  Get Started Free

Details for Patent 11,065,239

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Genentech, Inc. RITUXAN rituximab Injection 103705 November 26, 1997 ⤷  Get Started Free 2038-05-17
Idec Pharmaceuticals Corp. RITUXAN rituximab Injection 103737 February 19, 2002 ⤷  Get Started Free 2038-05-17
Btg International Inc. CROFAB crotalidae polyvalent immune fab (ovine) For Injection 103788 October 02, 2000 ⤷  Get Started Free 2038-05-17
Btg International Inc. VORAXAZE glucarpidase For Injection 125327 January 17, 2012 ⤷  Get Started Free 2038-05-17
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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