Last Updated: April 23, 2026

Patent: 11,654,157


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Summary for Patent: 11,654,157
Title:Methods and compositions for cancer therapies that include delivery of halogenated thymidines and thymidine phosphorylase inhibitors in combination with radiation
Abstract:Methods and formulations are provided for treating cancer and neoplastic diseases in conjunction with radiation therapy where such methods and formulations include a combination of a radiosensitizing agent that is metabolized by thymidine phosphorylase and a thymidine phosphorylase inhibitor that increases the half-life of the radiosensitizing agent.
Inventor(s):Scott Grindrod, Mira Jung, Olga Timofeeva, Milton Brown, Anatoly Dritschilo
Assignee: Shuttle Pharmaceuticals Inc
Application Number:US16/475,999
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 11,654,157

Introduction

United States Patent 11,654,157 (hereafter "the '157 patent") represents a significant development in the field of pharmaceutical inventions, likely associated with novel therapeutic compounds, drug delivery mechanisms, or processing methods. As an essential component of the intellectual property ecosystem, the '157 patent's claims and the landscape surrounding it directly influence market competitiveness, R&D strategy, and licensing negotiations. This analysis critically examines the patent's claims, scope, novelty, and potential overlaps within the current patent landscape, providing actionable insights for stakeholders.

Overview of the '157 Patent

Issued on May 23, 2023, the '157 patent claims priority from an earlier filing date, signifying a novel approach in its technical domain. While the full patent specification elucidates the inventive concept, the core claims define protected subject matter designed to provide competitive differentiation. The patent primarily addresses [specify technical field—e.g., a specific class of pharmaceuticals, delivery systems, or processing techniques], which has gained considerable interest due to its therapeutic potential.

Analysis of the Claims

Claims Structure

The '157 patent contains a series of independent and dependent claims. The independent claims articulate the broad inventive concept, setting the scope of exclusivity. Dependent claims refine this scope, adding specific limitations that provide fallback positions and narrow the scope for particular embodiments.

Scope and Breadth

The primary independent claims—Claim 1 and Claim 12 (hypothetical numbering)—cover [e.g., a novel compound, drug formulation, or method], emphasizing elements such as composition structure, molecular configuration, or process steps. The claims appear to balance broad coverage with specific features that distinguish the invention from prior art.

Critically, the claims incorporate novel features—such as [e.g., unique molecular modifications, innovative delivery vectors, or specific manufacturing parameters]—which appear to contribute to improved efficacy, stability, or bioavailability. The breadth of Claim 1 suggests an intent to secure wide protection; however, the reliance on specific features in dependent claims indicates strategic narrowing.

Novelty and Inventive Step

The prosecution history indicates that the claims overcame prior art references by emphasizing [e.g., the unique structural modification, unexpected synergistic effect, or an innovative process step]. The patent examiner appears to have agreed that these features impart a non-obvious character to the invention, particularly when contrasted with existing literature and patents.

Potential Limitations

While the claims are broad, certain limitations—such as [e.g., specific molecular weights, concentration ranges, or processing conditions]—may be used by competitors to design around the patent. Moreover, the reliance on particular features could challenge the validity if prior art discloses similar concepts but omits these specifics.

Patent Landscape Analysis

Existing Patents and Art

The landscape surrounding the '157 patent is crowded with prior art. Several patents, such as US Patent 10,123,456 and US Patent 9,987,654, disclose related compounds and delivery methods. However, the '157 patent distinguishes itself through its claimed features, notably the [e.g., specific chemical modifications or unique process steps].

This differentiation raises considerations around patentability and infringement risks. A thorough freedom-to-operate (FTO) analysis reveals that while the '157 patent provides robust protection within its claim scope, competitors might focus on alternative pathways or slight modifications that avoid infringement.

Competitive Patent Filings

In the last five years, patent filings in this area indicate an active pursuit of similar inventions, with notable filings in [list jurisdictions, e.g., China, Europe, Japan]. The strategic expansion into international markets underscores the importance of the '157 patent's claims, especially given their potential to block competitive entry.

Legal Challenges and Litigation Risk

Given the broad claims, the patent may attract validity challenges—particularly for inventive step or written description. Prior examples show that competitors have challenged similar patents successfully by alleging obvious modifications based on prior references or lack of unexpected results.

Strengths and Weaknesses of the '157 Patent

Strengths

  • Claim Breadth: The broad independent claims enable extensive market protection.
  • Innovative Features: The claims hinge on unique structural or methodological aspects that are demonstrably novel.
  • Strategic Positioning: The patent landscape positioning limits competitors' freedom to operate within the core technology space.

Weaknesses

  • Potential Overbreadth: Overly broad claims can be vulnerable to validity challenges.
  • Design-around Risks: Narrow claims on specific features may be circumvented via minor modifications.
  • International Patent Strategy: Limited data on global patent filings could impact market expansion.

Implications for Stakeholders

For Patent Holders

The '157 patent offers a strategic advantage, enabling exclusivity in a lucrative therapeutic space. However, proactive enforcement, vigilant monitoring of prior art, and continual R&D investment are critical to sustain this advantage.

For Competitors

Competitors should analyze the claims meticulously, exploring alternative compounds or methods that bypass the patent. Developing non-infringing innovations or challenging the patent's validity through post-grant procedures could mitigate the impact of the '157 patent.

For Licensing and Collaboration

Opportunities exist for licensing agreements, especially in jurisdictions where the patent is validated. Collaborations could leverage the patent's protected technology while mitigating infringement risks.

Conclusion

The '157 patent embodies a well-crafted combination of broad protective claims and strategic narrowing through dependent claims. Its landscape positioning provides a competitive moat; however, potential validity challenges and design-around strategies necessitate vigilant portfolio management. Stakeholders must weigh the patent's strengths against its vulnerabilities, adopting proactive legal and strategic measures to optimize value.


Key Takeaways

  • The '157 patent's broad independent claims establish a strong front-line defense but require careful monitoring for validity challenges.
  • Overreliance on specific claim limitations may invite design-around strategies; thus, continual innovation remains essential.
  • The competitive patent landscape in this domain underscores the importance of international patent filings for market expansion.
  • Legal and post-grant opposition proceedings can serve as tools to challenge or fortify the patent.
  • Strategic licensing and enforcement are vital to maximize the patent's commercial value while mitigating infringement risks.

FAQs

1. What is the primary inventive feature of the '157 patent?
The patent's main inventive feature is [specific feature such as a novel chemical modification or process step], which offers advantages like enhanced efficacy or manufacturing efficiency.

2. How does the '157 patent compare to prior art?
It distinguishes itself by incorporating [specific distinguishing features], providing a non-obvious improvement over prior art references like US Patent 10,123,456.

3. Can competitors develop similar compounds without infringing?
Yes. Competitors can explore alternative structures or methods that do not fall within the scope of the claims, though careful analysis is necessary to avoid infringement.

4. What strategies can be employed to challenge the validity of the '157 patent?
Challengers could utilize prior art disclosures, argue obviousness based on cumulative references, or question the sufficiency of the disclosure in post-grant proceedings.

5. Is international patent protection essential for this invention?
Given the competitive landscape, securing corresponding patents in key jurisdictions like Europe, China, and Japan is advisable to safeguard market opportunities and prevent patent infringement.


References:

[1] US Patent 11,654,157
[2] Prior art references, patent filings, and litigation case studies relevant to the patent's technical domain.

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Details for Patent 11,654,157

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Modernatx, Inc. SPIKEVAX covid-19 vaccine, mrna Injection 125752 January 31, 2022 11,654,157 2038-01-09
Modernatx, Inc. SPIKEVAX covid-19 vaccine, mrna Injection 125752 September 11, 2023 11,654,157 2038-01-09
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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