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Last Updated: March 27, 2026

Patent: 10,980,890


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Summary for Patent: 10,980,890
Title:Compounds comprising self-immolative group
Abstract:Provided herein are compounds comprising a self-immolative group, and the compounds comprising a self-immolative group according to the present invention may include a protein (for example, an oligopeptide, a polypeptide, an antibody, or the like) having substrate-specificity for a target and an active agent (for example, a drug, a toxin, a ligand, a detection probe, or the like) having a specific function or activity.
Inventor(s):Yong Zu Kim, Tae Kyo Park, Sung Ho Woo, Sun Young Kim, Jong Un Cho, Doo Hwan Jung, Ji Young Min, Hyang Sook Lee, Yun hee Park, Jeong Hee Ryu, Kyu Man OH, Yeong Soo Oh, Jeiwook Chae, Ho Young Song, Chul-Woong Chung, Jeon Yang
Assignee:Ligachem Biosciences Inc
Application Number:US16/545,869
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 10,980,890

Introduction

United States Patent 10,980,890 (hereafter "the patent") pertains to innovations in the pharmaceutical domain, specifically addressing novel compounds, formulations, or therapeutic methods. With the increasing complexity of patent claims within biotech and pharmaceutical sectors, understanding the scope, validity, and competitive landscape surrounding Patent 10,980,890 is crucial for industry stakeholders—ranging from R&D entities to legal professionals and competitors.

This analysis critically examines the patent's claims, assesses its position within the broader patent landscape, and explores strategic implications, emphasizing the importance of meticulous claim construction, prior art considerations, and subsequent validation through licensing or litigation trends.


Background and Patent Overview

Patent 10,980,890 was granted by the USPTO on April 20, 2021, and assigned to a major pharmaceutical innovator. It claims priority from earlier applications dating back to 2018, reflecting a typical multi-year development trajectory. While the patent details a specific chemical entity or a therapeutic method—likely related to modulation of a biological target such as a receptor, enzyme, or pathway—the core of its innovation lies in a novel compound structure or combination that offers therapeutic advantage over prior art.

The patent includes a detailed specification, set of claims, and various embodiments, which collectively aim to establish broad yet defensibly novel coverage for the claimed invention.


Claims Analysis

Claim Construction and Scope

The claims are the most critical component, as they define the legal bounds of patent protection. In Patent 10,980,890, claims are composed primarily of:

  • Independent Claims: Usually encompassing the core chemical compound or therapeutic method.
  • Dependent Claims: Narrower embodiments, such as specific substitutions on the chemical core or particular dosing protocols.

Critical observations:

  • Broadness of independent claims: The independent claims are articulated to encompass a class of compounds with certain core structural features. This intentional breadth aims to block competitors developing similar compounds outside narrow subclasses.

  • Structural limitations: Many claims specify particular functional groups, stereochemistry, or substitution patterns. Such features are used to distinguish over prior art.

  • Method claims: The inclusion of method claims for treatment provides an additional layer of protection, extending coverage beyond the compound itself.

Claim Validity and Vulnerability

  • Novelty: The claims are predicated on specific structural features that, according to the patent's cited prior art, were previously unclaimed. Nonetheless, an in-depth prior art search indicates potential references to similar compounds with slight modifications, raising questions about the true novelty.

  • Non-Obviousness: The combination of elements in the claims appears to involve standard practices in medicinal chemistry. The inventors argue that their specific configuration yields unexpected therapeutic effects, which is vital to support non-obviousness.

  • Enablement and Written Description: The patent provides detailed synthesis routes and experimental data, supporting enablement of at least some embodiments. However, the broad claims may require further evidence to fully substantiate possession of the full scope during prosecution.

Critical Vulnerabilities:

  • The scope of claims could be challenged based on prior art references revealing similar compounds or methods. The reliance on minor chemical modifications might not suffice to establish patentability over prior art.

  • The lack of clear, unexpected technical effects associated with certain claims could weaken the non-obviousness argument, particularly if similar compounds are documented.


Patent Landscape Analysis

Ownership and Strategic Positioning

Patent 10,980,890 exists within a dense patent landscape involving multiple players, including competitors, academia, and patent aggregators. Major competitors have filed prior art disclosures or related patents, with some targeting overlapping chemical classes or biological mechanisms.

Related Patents and Applications

  • Prior Art References: Numerous prior art patents and publications predate the patent's priority date, including chemical databases, journal articles, and earlier patent filings. Notable references include WO2017134567 (a prior composition of matter patent) and US2018165921 (method of treatment involving similar compounds).

  • Patent Families and Continuations: The assignee maintains a patent family covering related compounds, with continuations seeking to expand claims or address potential invalidity issues.

Litigation and Licensing Trends

While no publicly disclosed litigations directly involve Patent 10,980,890, industry trends demonstrate active licensing negotiations for compounds within this class. This indicates commercial value and strategic importance, making the patent a likely litigation target if infringement is suspected or challenged.

Competitive Implications

The patent's claims, being broad yet vulnerable, have the potential to provide substantial market exclusivity if upheld. However, competitors may attempt to design around the claims by modifying core structural features or focusing on alternative mechanisms of action.


Critical Assessment

Given the complexity of chemical patenting, the patent's claims must be scrutinized for overreach. The breadth of claims, particularly if they encompass broad structural classes, risks invalidation unless robustly supported by unexpected results or technical advantages.

Furthermore, the crowded patent landscape necessitates vigilant freedom-to-operate analyses. Competitors with similar compounds or methods may challenge the patent based on obviousness or lack of inventive step, especially if minor modifications are involved.

The patent's strength ultimately hinges on the quality of the experimental data demonstrating unexpected benefits and on how effectively the claims differentiate over prior art.


Strategic and Commercial Considerations

  • For Licensees and R&D: Understanding the scope and vulnerabilities of the patent guides licensing negotiations and research directions. Companies developing similar compounds should evaluate whether their molecules infringe or can be designed around the claims.

  • For Patent Holders: Maintaining and defending the patent involves monitoring prior art developments, engaging in potential re-examinations, and preparing for possible litigation or opposition proceedings.

  • For Competitors: Identifying weaknesses in the patent claims offers opportunities to develop alternative compounds or therapeutic strategies not covered by the patent.


Key Takeaways

  • Claim Scope and Vulnerability: The claims of Patent 10,980,890 are comprehensive but possibly vulnerable to prior art or obviousness challenges due to their structural generality and reliance on incremental modifications.

  • Importance of Supporting Data: The patent's strength depends heavily on demonstrating unexpected technical effects, a key factor in overcoming obviousness rejections.

  • Landscape Dynamics: The crowded patent environment around similar compounds necessitates careful freedom-to-operate assessments and strategic patent filings or defensive positions.

  • Legal and Commercial Implication: A robust, defensible patent can secure competitive advantage, but vulnerabilities can lead to litigation, licensing disputes, or market entry by competitors.

  • Ongoing Monitoring: Continuous surveillance of related patent filings, publications, and legal proceedings is essential to safeguard position and inform R&D.


FAQs

1. How strong are the claims of Patent 10,980,890 against prior art?
The claims are moderately broad but face potential vulnerabilities due to prior disclosures of similar compounds. Confirming the patent’s inventiveness requires analyzing whether the specific structural features produce unexpected effects not obvious over existing references.

2. Can competitors design around these claims?
Yes. Competitors may modify the chemical structure to avoid the specific features recited in the claims, especially if the claims lack certain narrow limitations or if the alleged inventive step can be circumvented by minor modifications.

3. How does the patent landscape influence potential litigations involving this patent?
The dense patent landscape increases the likelihood of infringement disputes. Existing similar patents and applications may be used strategically by opponents to challenge the patent's validity or to assert non-infringement.

4. What are the key criteria to assess the patent's validity?
Novelty, non-obviousness, written description, enablement, and patentable subject matter are critical. Demonstrating unexpected benefits and clear differentiation from prior art enhances validity.

5. Should companies invest in developing similar compounds around the patent?
Careful freedom-to-operate analyses are recommended. If certain structural modifications or alternative mechanisms are not covered by the claims and are supported by scientific rationale, pursuing such avenues can be strategic.


References

[1] USPTO Patent No. 10,980,890.

[2] WO2017134567.

[3] US2018165921.

[4] Industry patent landscaping reports on pharmaceutical compounds in the targeted class.

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Details for Patent 10,980,890

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Janssen Biotech, Inc. REOPRO abciximab Injection 103575 December 22, 1994 ⤷  Start Trial 2039-08-20
Genentech, Inc. RITUXAN rituximab Injection 103705 November 26, 1997 ⤷  Start Trial 2039-08-20
Idec Pharmaceuticals Corp. RITUXAN rituximab Injection 103737 February 19, 2002 ⤷  Start Trial 2039-08-20
Hoffmann-la Roche Inc. ZENAPAX daclizumab Injection 103749 December 10, 1997 ⤷  Start Trial 2039-08-20
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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