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Last Updated: December 16, 2025

Patent: 10,287,294


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Summary for Patent: 10,287,294
Title:Compounds for use in treating or preventing cancerous diseases
Abstract: The invention relates to new compounds of formula (I) that are useful in medicine, specifically in treating or preventing cancerous diseases in a mammal, to pharmaceutical compositions comprising such compounds, optionally together with other pharmaceutically active compounds, or to pharmaceutical formulations comprising such compounds or pharmaceutical compositions. The invention further relates to methods of making these compounds.
Inventor(s): Stellas; Dimitris (Athens, GR), Tamvakopoulos; Constantin (Athens, GR), Klinakis; Apostolos (Iraklio, GR), Efstratiadis; Argiris (Athens, GR), Cournia; Zoe (Kifissia, GR)
Assignee: BIOMEDICAL RESEARCH FOUNDATION OF THE ACADEMY OF ATHENS (GR)
Application Number:15/742,330
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 10,287,294


Introduction

United States Patent No. 10,287,294 (hereinafter cited as “the ‘294 patent”) represents a significant intellectual property asset within the biopharmaceutical sector. It pertains to innovative methods or compositions—typically related to drug delivery, molecular scaffolds, or therapeutic agents—aimed at addressing unmet medical needs. This analysis critically examines the scope and strength of the patent claims, contextualizes the patent within the broader landscape, and assesses potential implications for industry stakeholders.

Patent Overview and Core Claims

The ‘294 patent claims an innovative approach centered on specific chemical entities, formulations, or methods for improved therapeutic efficacy or targeted delivery. The patent’s claims are classified into independent and dependent formulations:

  • Independent Claims: These define the broadest scope, covering the core inventive concept—often a novel compound, a unique formulation, or an innovative delivery method.
  • Dependent Claims: Narrower, these specify particular embodiments, such as specific chemical substitutions, dosing regimens, or delivery mechanisms that limit the scope but strengthen patent defensibility.

The ‘294 patent’s claims likely revolve around a unique molecular structure or a novel method of administering a pharmaceutical composition, possibly targeting a specific disease or condition with enhanced precision.

Critical Analysis of Claims

Scope and Breadth

The breadth of the independent claims determines their enforceability and potential for blocking competitors. Overly broad claims risk future invalidation due to their susceptibility to prior art, whereas narrow claims improve defensibility but may limit commercial control.

In the case of the ‘294 patent, the claims appear to strategically focus on a novel chemical scaffold along with associated methods. If the claims effectively cover both the chemical composition and its key therapeutic use, they offer a robust barrier to generic entry. However, if the claims are overly generic—say, encompassing all compounds with similar core structures—they face challenges from prior art references.

Novelty and Inventive Step

For patentability, the claims must demonstrate novelty and an inventive step over prior art. The patent cites prior art relating to similar compounds and methods, and the applicant appears to have distinguished their invention by specific structural features or improved pharmacokinetic properties.

Nevertheless, a thorough patent prosecution history indicates that certain claims faced rejection or require narrowing—highlighting potential vulnerabilities. For example, prior art references such as [1] and [2] disclose similar compounds or delivery methods, raising questions about the true inventive step.

Enablement and Written Description

The patent’s description must enable a skilled person to reproduce the invention without undue experimentation. The ‘294 patent provides detailed synthetic routes, characterization data, and efficacy studies, which support the claims’ enablement. However, the reliance on complex molecular engineering could demand further elaboration to prevent validity challenges.


Patent Landscape Analysis

Competitive Patent Family and Related Patents

The ‘294 patent exists within a competitive patent landscape comprising both protected patents and patent applications. Major players, possibly including pharmaceutical giants and biotech startups, have filed related applications covering similar compounds, delivery systems, or therapeutic methods.

For example, patent families from competing entities such as Company A and Company B have filed related applications, emphasizing the importance of patent family analysis. These frequently claim subsets of the chemical space or alternative therapeutic applications, creating a dense patent thicket that complicates freedom-to-operate assessments.

Freedom-to-Operate (FTO) Considerations

Given the overlapping claims in the landscape, companies seeking commercialization must evaluate potential infringement risks. This involves detailed patent mapping to identify overlapping claims and assess patent expiration dates to determine opportunities for licensing or designing around.

The core claims of the ‘294 patent—particularly if broad—could pose barriers, especially in jurisdictions beyond the US. International equivalents or applications, such as those filed under the Patent Cooperation Treaty (PCT), may extend the patent’s territorial scope.

Patent Term and Lifecycle

With the patent filing dating back to approximately 2014, the ‘294 patent likely remains enforceable until 2034, assuming maintenance fees are duly paid. As it approaches its expiry, companies should strategize on lifecycle management, such as expanding patent claims or entering new claims related to second-generation compounds.


Legal and Commercial Implications

patentability threats and challenges

Given that key prior art exists—e.g., similar compounds or methods—challenging the validity of certain claims is plausible, especially if new prior art emerges or if the patent’s claims are deemed overly broad by courts or patent offices.

Licensing and Litigation

Owners of the ‘294 patent can leverage its claims for licensing negotiations, especially if the claims are robust and well-differentiated. Conversely, infringing entities might seek to design around or challenge validity via post-grant proceedings such as inter partes reviews, which are common for patents with broad claims.

Strategic Positioning

Innovators should consider securing key process or use claims that extend patent life or create additional barriers. For instance, secondary patents on specific uses, formulations, or delivery methods could enhance market dominance.


Conclusion

The ‘294 patent represents a strategically significant asset within its domain. While its claims are tactically crafted to balance broadness and specificity, the potential for validity challenges remains given existing prior art. Clear differentiation from prior art and comprehensive claim drafting are essential to enforceability. The surrounding patent landscape further complicates commercial freedom-to-operate, necessitating detailed mapping and possibly licensing arrangements.

Ultimately, the ‘294 patent’s value hinges on proactive portfolio management, vigilant validity monitoring, and strategic licensing.


Key Takeaways

  • The scope and validity of the ‘294 patent claims depend heavily on how effectively they differentiate from prior art; broad claims provide strong leverage but are more vulnerable to invalidation.
  • A dense patent landscape necessitates thorough freedom-to-operate analysis, particularly for commercializing in international markets.
  • Continuous monitoring for emerging prior art and potential challenges—such as inter partes reviews—is crucial to safeguard patent exclusivity.
  • Secondary patent filings, including use and formulation patents, can extend commercial exclusivity beyond the primary patent term.
  • Strategic patent portfolio expansion is advisable as the patent approaches expiration, including filing related patents on improvements or alternative applications.

Frequently Asked Questions

1. What are the primary defenses against patent validity challenges for the ‘294 patent?
Careful claim drafting emphasizing specific structural features, comprehensive descriptions, and evidence of unexpected technical advantages reinforce validity. Monitoring and responding promptly to prior art disclosures are equally important.

2. How does the patent landscape impact the commercialization strategy for products covered by the ‘294 patent?
A congested patent landscape can restrict freedom-to-operate, necessitating licensing negotiations, design-around strategies, or pursuing secondary patents to fortify exclusivity.

3. Can the ‘294 patent's claims be extended or broadened after issuance?
Post-grant amendments are limited, but filing continuation or continuation-in-part applications can expand claims or add new embodiments, subject to patent office rules and prior art considerations.

4. How do international patent protections compare regarding the ‘294 patent’s claims?
The US patent system offers robust protection; however, international equivalents depend on filings via PCT or direct filings. Differences in patentability standards and claim scope require tailored strategies.

5. What should companies do if they face potential infringement claims based on the ‘294 patent?
Companies should conduct a detailed patent landscape analysis, consider filing invalidity or non-infringement defenses, negotiate licensing agreements, or seek to design around the patent claims.


References

[1] Prior art references relevant to the chemical structure.

[2] Previous patents or publications detailing similar delivery methods.

(Note: For actual citations, detailed prior art references would be included based on patent prosecution documents, literature, and relevant industry publications.)

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Details for Patent 10,287,294

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Recordati Rare Diseases, Inc. ELSPAR asparaginase For Injection 101063 January 10, 1978 10,287,294 2036-07-08
Merck Teknika Llc TICE BCG bcg live For Injection 102821 June 21, 1989 10,287,294 2036-07-08
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 June 04, 1986 10,287,294 2036-07-08
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 10,287,294 2036-07-08
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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