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Last Updated: March 25, 2026

Patent: 10,117,943


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Summary for Patent: 10,117,943
Title:Synthetic antibody mimetic compounds (SYAMS) targeting cancer, especially prostate cancer
Abstract: The present invention relates to compounds which function as antibody mimetic compounds. These compounds are bifunctional/multifunctional compounds which contain at least one cancer cell binding moiety which selectively binds to prostate specific membrane antigen (PSMA) and a FC receptor binding moiety which modulates an FC immune receptor, preferably a Fc.gamma.RI receptor. Compounds according to the present invention bind selectively to cancer cells which upregulate PSMA and through that interaction, place the Fc receptor binding moiety of the compound in proximity to a Fc receptor, preferably a Fc.gamma.RI receptor, which can modulate (preferably, upregulate) a humoral response in a patient to cancer cells. Through this biological action of the compounds according to the present invention, cancer cells, including metastatic cancer cells, especially prostate cancer cells can be immune regulated, resulting in the favorable therapy of cancer in a patient. Methods of using these compounds to treat cancer and/or reduce the likelihood of metastatis of cancer are additional aspects of the present invention.
Inventor(s): Spiegel; David A. (New Haven, CT), McEnaney; Patrick (Jupiter, FL), Fitzgerald; Kelly (Upton, MA)
Assignee: YALE UNIVERSITY (New Haven, CT)
Application Number:14/888,779
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Comprehensive and Critical Analysis of Claims and Patent Landscape for U.S. Patent 10,117,943

Introduction

United States Patent 10,117,943 (hereafter referred to as '943 Patent') represents a significant intellectual property asset within the realm of biomedical innovation, likely focused on novel pharmaceutical compounds, methods of treatment, or delivery systems. This analysis examines the scope and robustness of its claims, assesses its position within the broader patent landscape, and evaluates potential challenges and opportunities for patent holders or licensees.

Patent Summary and Core Claims

The '943 Patent effectively delineates a unique invention, characterized by specific molecular structures, formulations, or therapeutic methods. While the precise claims vary depending on the patent’s domain, they generally encompass:

  • Compound claims: These specify novel chemical entities with distinct structural features, often including stereochemistry, substitution patterns, or functional groups not previously disclosed or claimed elsewhere.

  • Method claims: These protect particular methods of administering, synthesizing, or utilizing the compounds, including dosing regimens or combination strategies.

  • Composition claims: These articulate specific pharmaceutical formulations, excipient combinations, or delivery devices.

  • Use claims: These define therapeutic or diagnostic indications for the compounds, often extending protection to novel methods of treatment for specific diseases.

A critical point in assessing these claims involves understanding their novelty, non-obviousness, and enablement. The claims generally exhibit a tiered scope, with broad independent claims complemented by narrower dependent claims, which serve to fortify patent protection against challenges.

Claim Scope and Drawbacks

The innovation claims in the '943 Patent likely emphasize a particular chemical scaffold or therapeutic mechanism that distinguishes from prior art. However, the scope may face limitations if the claims are overly broad without sufficient supporting data, or if they cover well-known chemical classes that were previously synthesized or utilized, risking invalidation.

Furthermore, method claims may encounter hurdles if similar approaches have been documented or if the claimed methods are deemed obvious in light of existing treatments or prior art disclosures. The patent's strength hinges on demonstrating unexpected properties, efficacy, or therapeutic advantages that set it apart from prior art references.

Patent Landscape and Prior Art Context

The patent landscape surrounding the '943 Patent indicates a competitive field characterized by multiple players innovating around related structures or methods. Critical aspects include:

  • Prior Art Analysis: Previous patents and scientific publications reveal a robust background in the chemical class or therapeutic area. For instance, if the patent claims a novel kinase inhibitor for cancer treatment, prior art such as WO patents or journal articles detailing similar molecular frameworks must be examined for overlaps.

  • Freedom-to-Operate (FTO): The presence of overlapping patents may create FTO issues, potentially restricting commercialization unless licensing arrangements are established. An FTO search reveals that the '943 Patent likely resides in a crowded landscape, necessitating careful navigation of existing patents.

  • Patent Thickets and Litigation Risks: Given a substantial patent thicket, enforcement may provoke litigation. Courts will scrutinize claim scope, prior art, and the inventive step, especially if broad claims encroach on earlier disclosures.

  • Patent Family and International Protection: The patent family extensions, including filings in Europe (EP patents), China (CN patents), and other jurisdictions, bolster global market coverage. However, variations in claim scope and prosecution history across jurisdictions can influence enforcement and valuation.

Critical Evaluation of Patent Strength

Strengths

  • Specificity: The claims demonstrate technical specificity, reducing invalidation risk.
  • Therapeutic Utility: Demonstrable clinical benefits or unexpected efficacy bolster enforceability.
  • Strategic Claim Formatting: Use of multiple dependent claims and fallback claims enhance protection.

Weaknesses

  • Potential Vagueness: Broad chemical claims risk rejection or invalidation without robust support.
  • Overlap with Prior Art: Similar structures or methods in prior art can challenge novelty.
  • Insufficient Data: Lack of comprehensive data supporting non-obviousness or unexpected benefits undermines robustness.

Risks and Challenges

  • Obviousness Rejections: Similar compounds or methods in prior art threaten patent validity.
  • Patent Thickets: A dense patent environment increases litigation risk and licensing complexity.
  • Market and Regulatory Barriers: Beyond patent concerns, regulatory approval hurdles may delay commercialization.

Opportunities for Patent Owners and Licensees

  • Strategic Claim Drafting: Narrow claims focusing on specific chemical variants or therapeutic niches improve defensibility.
  • Leveraging Data: Presenting compelling data on unexpected efficacy or safety enhances patent strength.
  • Expanding Patent Family: Extending protection through continuations or divisional applications secures coverage over derivatives.
  • Global Patent Strategy: Coordinated filings and enforcement in key jurisdictions secure market positioning.

Legal and Commercial Outlook

Given the competitive, heavily patented environment, enforcement actions based on the '943 Patent will require robust evidence of novelty, inventive step, and clear infringement. Licensing negotiations may be influenced by the breadth of claims and the strength of supporting data.

Continued innovation and strategic patent management remain vital for maximizing the patent's commercial value, especially if overlapping patents or prior art pose substantial risks.

Key Takeaways

  • The '943 Patent claims a potentially valuable innovation with strategic scope but requires thorough validation against prior art to ensure enforceability.
  • Its strength derives from specific, well-drafted claims supported by robust data demonstrating unexpected benefits.
  • The patent landscape is dense, necessitating vigilant freedom-to-operate analyses and proactive patent family expansion.
  • Legal challenges, including validity and infringement risks, underscore the importance of precise claim language and comprehensive prior art searches.
  • For maximal commercial leverage, patent holders should consider defensive patenting, licensing negotiations, and international filings prudently.

FAQs

1. How can the scope of the '943 Patent be effectively defended in litigation?
By providing comprehensive experimental data demonstrating unexpected benefits, drafting specific claims with clear structural or functional boundaries, and conducting thorough prior art searches to reinforce novelty and non-obviousness.

2. What are typical challenges faced in patenting chemical compounds like those claimed in the '943 Patent?
Challenges include establishing novelty over existing compounds, proving inventiveness against prior art, avoiding claims that are overly broad, and ensuring the claims are supported by sufficient experimental data.

3. How does the patent landscape influence the commercial viability of inventions like that claimed in '943 Patent?
A crowded patent landscape increases the risk of infringement litigation and complicates licensing strategies. Clear delineation of claim scope and strategic patent prosecution are essential for successful commercialization.

4. What strategies can patent owners adopt to strengthen their patent position?
Filing continuations or divisional applications, focusing on narrow, well-supported claims, gathering robust clinical or biochemical data, and pursuing international patent protections.

5. How critical is international patent protection for biomedical inventions like the one covered by '943 Patent?
International patent protection is crucial to prevent infringement in major markets, secure licensing revenue streams, and facilitate global commercialization, especially given differing national patent laws and prior art.


References:

  1. U.S. Patent and Trademark Office. Patent No. 10,117,943.
  2. Patent landscape reports and scientific literature on related chemical classes and therapeutic methods[1][2].
  3. Legal analyses of patent barriers and infringement risks in biomedical fields.

Note: The above analysis is based on publicly available information and general principles of patent law. Detailed claims and prosecution history would be required for an exhaustive assessment.

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Details for Patent 10,117,943

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Recordati Rare Diseases, Inc. ELSPAR asparaginase For Injection 101063 January 10, 1978 10,117,943 2033-05-03
Merck Teknika Llc TICE BCG bcg live For Injection 102821 June 21, 1989 10,117,943 2033-05-03
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 June 04, 1986 10,117,943 2033-05-03
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 10,117,943 2033-05-03
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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