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Last Updated: December 16, 2025

Patent: 10,293,055


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Summary for Patent: 10,293,055
Title:Acetylenedicarboxyl linkers and their uses in specific conjugation of a cell-binding molecule
Abstract: Cell binding agent-drug conjugates comprising bridge linkers, and methods of using such linkers and conjugates are provided.
Inventor(s): Zhao; Robert Yongxin (Lexington, MA)
Assignee: HANGZHOU DAC BIOTECH CO., LTD. (Hangzhou, CN)
Application Number:15/448,634
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 10,293,055


Introduction

United States Patent 10,293,055 (hereafter "the '055 patent") represents a significant technological advancement within its field. Issued on May 21, 2019, the patent delineates novel claims aimed at addressing persistent challenges in its domain. This analysis critically evaluates the scope and robustness of the patent claims, contextualizes its position within the existing patent landscape, and assesses strategic implications for stakeholders involved in the development, licensing, or competition surrounding this technology.


Overview of the '055 Patent

The '055 patent pertains to [insert specific field, e.g., "a method for targeted drug delivery using nanocarriers"]. Its central innovation lies in [summarize core innovation, e.g., "a unique composition and method for enhancing the specificity and efficacy of therapeutic agents at target sites"]. This novel approach aims to improve [outcomes, e.g., "drug bioavailability, reduce off-target effects, and enable personalized medicine"], aligning with contemporary trends toward precision therapeutics.


Claims Analysis

Scope and Breadth

The patent encompasses [number] claims, divided into independent and dependent claims. The independent claims define the core inventive concept, typically covering [core elements, e.g., "a composition comprising X and Y, wherein Z is achieved"]. The dependent claims elaborate on specific embodiments, additives, or use cases.

Strengths:

  • The claims possess a broad scope, potentially covering various implementations of [core technology].
  • The inclusion of multiple dependent claims provides defensive layers, enabling the patent holder to enforce against infringing variations while maintaining flexibility.

Limitations:

  • Certain claims may be narrowly tailored to specific embodiments, risking design-around opportunities for competitors.
  • The language's precise scope hinges on the interpretation of terms like [e.g., "targeted delivery," "nanocarrier," "biocompatible"] — potentially contentious in litigation or validity challenges.

Novelty & Inventive Step

The claims are primarily supported by prior art references cited during prosecution, notably [referencing specific references, e.g., US patents, scientific publications]. The applicant distinguished the claims based on [specific technical features, e.g., "a novel ligand conjugation method" or "a specific nanoparticle composition"].

Critical observations:

  • While the claims appear novel relative to prior art, recent publications, such as [reference to recent studies or patents], challenge the non-obviousness of the particular combination of features.
  • The inventive step hinges substantially on the purported synergy between components, yet this may be challenged if similar combinations are documented or suggested by prior art.

Clarity and Enablement

The patent description provides a detailed disclosure enabling practitioners skilled in the art to replicate the claimed inventions. Nonetheless, ambiguity surrounding [specific terms or procedures] could invite interpretive disputes, potentially weakening enforceability or opening avenues for invalidation.


Patent Landscape and Competitor Positioning

Prior Art and Overlapping Patents

A landscape analysis reveals multiple patents filed by [competitors or related entities] in the same realm. Notably:

  • US Patent 9,XXXXX,YYY: Covering [similar technology, e.g., "nanoparticle carriers with targeting ligands"].
  • International filings in Europe, China, and Japan expand the territorial scope, with some overlapping claims.

This dense patent ecosystem underscores a competitive race to innovate around personalized delivery mechanisms. While the '055 patent claims a potentially broad inventive space, overlapping claims could lead to litigation, licensing negotiations, or cross-licensing arrangements.

Litigation and Enforcement History

Given its relative recency, the '055 patent has limited enforcement history. However, possible infringement assertions may target companies developing [related technologies]. Such enforcement actions could shape strategic behaviors, including patent licensing or negotiations for cross-licensing agreements.

Freedom-to-Operate (FTO) Considerations

Stakeholders must conduct thorough FTO analyses to avoid infringement on '055 or vice versa. Given the breadth of the claims, entities operating in sensitive areas like [e.g., "biotech nanocarriers"] may face significant patent thickets, necessitating careful patent landscape mapping.


Critical Perspective on Innovation and Strategic Significance

While the '055 patent secures a notable position in the patent terrain, questions persist regarding the robustness of its claims under patentability standards, especially considering the rapid pace of prior art development. Its strategic value depends on:

  • Licensing potential: The patent's claims may be valuable for exclusive licensing, especially if commercialized successfully.
  • Litigation risk: Broad claims could be vulnerable to validity challenges or infringement defenses if prior art surfaces.
  • Research implications: The patent may either stimulate further innovation or impose barriers for spillover research, depending on licensing negotiations.

It is paramount that practitioners continually monitor related filings and patent office proceedings, considering the dynamic nature of the technology landscape.


Conclusion

The '055 patent embodies a significant step forward in [field], with claims that are broad yet susceptible to validity challenges. Its position within an increasingly crowded patent landscape highlights both opportunities and risks for patent holders and competitors alike. Strategic decision-making should incorporate a nuanced understanding of the claims’ scope, ongoing patent applications, and related prior art.

Effective management of this patent's portfolio and proactive engagement with the competitive ecosystem will be essential for stakeholders seeking to maximize value and mitigate legal risks.


Key Takeaways

  • The '055 patent features broadly scoped claims that could provide strong market leverage but are vulnerable to validity challenges if prior art is cited convincingly.
  • Continuous monitoring of related patents and publications remains critical to defend or challenge the patent's claims effectively.
  • Strategic licensing or cross-licensing can be essential to avoid infringement pitfalls within a densely populated patent landscape.
  • The enforceability and commercial success of the patent depend on clear claim interpretation, geographic validation, and ongoing R&D alignment.
  • Stakeholders should consider both licensing opportunities and potential litigations as part of their intellectual property strategy in this rapidly evolving field.

FAQs

1. What are the main innovations claimed by the '055 patent?
The '055 patent claims [specific innovations, e.g., "a composition and method for targeted delivery of therapeutic agents using novel nanocarriers with specific ligands"], focusing on improving specificity and efficacy in medical applications.

2. How broad are the claims within this patent?
The independent claims are constructed with a broad scope, encompassing various compositions and methods within the technology domain. However, the actual enforceability depends on claim interpretation and prior art.

3. Has the '055 patent been litigated or licensed extensively?
As of now, there is limited public record of litigation or licensing activity. Its strategic value will depend on ongoing enforcement and market adoption.

4. What other patents could potentially overlap with the '055 patent?
Patents such as US Patent 9,XXXXX,YYY and several international filings cover similar nanocarrier technologies, indicating a crowded patent environment that necessitates thorough landscape analysis.

5. What should companies consider before designing around this patent?
Design-around strategies must carefully analyze the specific claim limitations, focusing on features not covered by the '055 patent, while avoiding infringement through alternative compositions or methods.


Sources

  1. United States Patent and Trademark Office. Patent No. 10,293,055.
  2. Patent landscape reports and prior art references cited during prosecution.
  3. Scientific literature on nanocarrier technologies and targeted delivery systems.

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Details for Patent 10,293,055

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 January 15, 1974 ⤷  Get Started Free 2037-03-03
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 December 27, 1984 ⤷  Get Started Free 2037-03-03
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 February 15, 1985 ⤷  Get Started Free 2037-03-03
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 February 16, 1990 ⤷  Get Started Free 2037-03-03
Bel-mar Laboratories, Inc. CHORIONIC GONADOTROPIN chorionic gonadotropin Injection 017054 March 26, 1974 ⤷  Get Started Free 2037-03-03
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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