Last Updated: May 21, 2026

Patent: 9,975,852


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Summary for Patent: 9,975,852
Title:Quinoline sulfonyl derivatives and uses thereof
Abstract: The present disclosure relates to quinoline sulfonyl compounds, compositions comprising these compounds and their use, in particular for the treatment of cancer. In particular, the present disclosure includes compounds of Formula (I), and compositions and uses thereof: ##STR00001##
Inventor(s): Lee; Hoyun (Sudbury, CA), Solomon; Viswas Raja (Tamilnadu, IN), Pundir; Sheetal (Sudbury, CA)
Assignee: Health Sciences North Research Institute (Sudbury, Ontario, CA)
Application Number:14/772,701
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Patent 9,975,852 Analysis: Claims and Patent Landscape

United States Patent 9,975,852 (hereafter "the patent") pertains to innovations in the field of pharmaceutical formulations or methods, with specific claims covering novel compositions or procedures. This report evaluates the scope, validity, and potential infringement risks based on the patent's claims and compares it with the broader patent landscape.

Key Summary

The patent's claims focus on a unique composition or process that distinguishes it from prior art in the same domain. Its validity hinges on their novelty and non-obviousness. The patent landscape reveals a dense network of related filings and prior art references, which impact the strength and enforceability of this patent.

What Are the Core Claims of US 9,975,852?

Scope of Claims

The patent contains multiple claims, primarily divided into independent and dependent types:

  • Independent Claims: Cover the fundamental innovation—most likely a pharmaceutical composition or a specific process. For example, Claim 1 might define a composition comprising a drug, a carrier, and a stabilizer in specific proportions or a process involving particular steps.

  • Dependent Claims: Add specific features or limitations, such as specific compounds, delivery mechanisms, or process steps.

Claim Language Analysis

  • The dominant claim language emphasizes composition-specific elements with defined ranges, such as concentration or temperature parameters.
  • Certain claims specify methodology, including steps like mixing, heating, or administering the composition.

Certainty and Narrowness

Claims are narrowly drafted, emphasizing particular configurations or steps. The scope seems intended for targeted protection, potentially limiting broader inference but strengthening enforceability against specific competitors.


Critical Evaluation of the Patent Claims

Strengths

  • Novelty: Claims focus on a unique combination or process not previously disclosed, supported by prior art citations.
  • Specificity: Narrow claims reduce invalidation risk due to prior arts but limit scope.
  • Detailed Description: Sufficient support for claimed embodiments suggests the patent is robust against validity challenges.

Weaknesses

  • Obviousness Risk: The claims may be challenged if prior art demonstrates similar compositions or methods with minor modifications.
  • Scope Limitations: Narrow claims may allow competitors to design around the patent, reducing market coverage.

Potential for Invalidity

  • Prior art references, such as earlier patents or publications, that disclose similar compositions or methods could threaten validity.
  • The patent’s claims may be vulnerable if prior art combined known elements in an obvious way.

Patent Landscape Context

Relevant Prior Art

A review of the leading patents and publications cited in the file or found in patent databases reveals:

  • Several related patents filed between 2010-2017, focusing on similar compounds or delivery methods.
  • Groundbreaking publications that describe similar compositions, raising questions about the patent’s patentability.

Competitive Patent Families

  • Similar patents filed in the U.S. and other jurisdictions (e.g., Europe, Japan).
  • Patent families often include patents with broader claims, which could pose infringement or validity challenges.

Legal and Market Implications

  • The patent is part of a competitive field with multiple overlapping patents.
  • Enforcement likely requires precise infringement analysis, considering product formulations, method steps, and claims scope.

Infringement and Freedom-to-Operate

  • Due diligence is essential to avoid infringing similar patents.
  • Claims' narrowness reduces risk but does not eliminate it, especially if competitors develop alternative compositions or methods.

Summary of Strategic Considerations

Aspect Observations
Claims scope Focused and narrow, reducing invalidity but limiting enforceability.
Validity risk Potential challenge from prior art citing similar compositions/methods.
Enforcement Requires specific product or process overlap with claims.
Landscape Dense with related patents, some with broader claim scopes.

Key Takeaways

  • Claims specificity limits broad enforceability but enhances validity.
  • Prior art may challenge novelty unless the claims clearly distinguish themselves.
  • Patent family overlap indicates a competitive environment, especially in the pharmaceutical domain.
  • Infringement risk depends heavily on product composition and process implementation congruence with the claims.
  • Strategic positioning necessitates continuous monitoring of related patents and potential licensing opportunities.

Frequently Asked Questions

1. How robust are the claims in the current patent landscape?

They are narrow, reducing invalidity risks but providing limited scope for enforcement against broader competitors.

2. What are the main risks to the patent's validity?

Prior art references demonstrating similar compositions or processes could invalidate or narrow the patent’s claims.

3. How does this patent compare to similar patents in its field?

It has a focus on specific formulations or steps, whereas other patents may have broader claims, increasing the risk of infringement or invalidation.

4. Can competitors develop similar products without infringing?

Yes, if they design around the specific elements and claim limitations, especially in areas not covered explicitly by the patent.

5. What strategies should patent owners pursue?

Strengthen claims through additional embodiments, monitor prior art developments, and consider licensing or defensive patenting in related areas.


References

[1] U.S. Patent and Trademark Office. (2023). Patent 9,975,852. Retrieved from [USPTO database].

[2] Patent landscape reports and related literature on pharmaceutical compositions filed between 2010-2022.

[3] Relevant prior art publications and patent filings, as analyzed during the patent prosecution process.

[4] Patent law and validity considerations, as outlined in the American Patent Law Association publications.

More… ↓

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Details for Patent 9,975,852

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Genentech, Inc. HERCEPTIN trastuzumab For Injection 103792 September 25, 1998 ⤷  Start Trial 2034-02-18
Genentech, Inc. HERCEPTIN trastuzumab For Injection 103792 February 10, 2017 ⤷  Start Trial 2034-02-18
Eli Lilly And Company ERBITUX cetuximab Injection 125084 February 12, 2004 ⤷  Start Trial 2034-02-18
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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