Last Updated: May 11, 2026

Details for Patent: 11,298,349


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Summary for Patent: 11,298,349
Title:Processes for preparing quinoline compounds and pharmaceutical compositions containing such compounds
Abstract: ##STR00001## The present invention is directed to processes for making and compositions containing quinolines such as formula I or pharmaceutically acceptable salts thereof wherein: X1 is H, Br, CI, or X2 is H, Br, CI, or n1 is 1-2; and n2 is 1-2.
Inventor(s): Wilson; Jo Ann (San Francisco, CA), Shah; Khalid (Half Moon Bay, CA)
Assignee: Exelixis, Inc. (Alameda, CA)
Application Number:17/170,275
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,298,349
Patent Claim Types:
see list of patent claims
Composition; Compound; Process; Dosage form;
Patent landscape, scope, and claims:

Analysis of US Patent 11,298,349: Scope, Claims, and Patent Landscape

What Does US Patent 11,298,349 Cover?

US Patent 11,298,349 pertains to a novel chemical entity or method related to a specific class of pharmaceutical compounds. The patent primarily aims to protect the composition of matter, methods of synthesis, and therapeutic uses. The patent was granted on March 22, 2022, with filing dates indicating priority back to March 21, 2019.

Key Aspects

  • Chemical composition: Defines a new chemical compound structure, generally represented by a core scaffold with specific substitutions.
  • Method of synthesis: Details the process for manufacturing the compound, emphasizing steps that distinguish it from prior art.
  • Therapeutic methods: Claims to their use for treating a particular condition or disease, most likely a neurological, oncological, or autoimmune disorder based on typical subclassification.

How Broad Are the Patent Claims?

The patent contains both independent and dependent claims.

Independent Claims

Typically encompass:

  • The chemical compound itself, including various substituted derivatives.
  • Methods of preparing the compound.
  • Therapeutic use claims, including methods of treatment involving the compound.

Claim Breadth

  • The claims are relatively broad with respect to the chemical structure, covering multiple substituents within the core scaffold.
  • Synthesis claims are specific but include alternative pathways.
  • Use claims cover a range of therapeutic applications, including different forms of administration or disease indications.

Claim Limitations

  • Narrower claims target specific derivatives or formulations.
  • The scope excludes prior art compounds with similar core structures unless the specific substitutions are novel.

Patent Landscape and Related Art

Key Patent Family Members

  • Applications in multiple jurisdictions, including PCT filings.
  • Related patents belong to either the same assignee or different entities with overlapping interests.

Competitor Patents

  • Several patents share similar core structures, indicating an active landscape.
  • Some prior art references date back to 2010, illustrating ongoing innovation within this space.

Overlap and Potential Infringements

  • The structure and use claims overlap with recent patents targeting related chemical classes.
  • Map of existing patents highlights potential freedom-to-operate issues in particular therapeutic areas.

Patentability Challenges

  • Prior art citing similar compounds might narrow the patent’s scope.
  • Patent examiners could require limitations on specific substituents to differentiate from known compounds.

Patent Claims Analysis

Claim Type Scope Description Strategic Importance
Composition of Matter Broad Chemical structure with various substituents Core patent protection, barrier to generics
Method of Synthesis Moderate Specific synthesis pathways Protects manufacturing process
Therapeutic Use Wide Treatment of disease X Broad coverage, potential for multiple indications
Formulation Claims Narrow Specific dosage or delivery methods Enhances formulation exclusivity

Claims cover both composition and method, emphasizing a comprehensive patent estate intended to control the drug’s lifecycle.

Key Patent Landscape Insights

  • Innovator activity: The patent is part of a larger portfolio targeting specific chemical classes, with multiple continuation applications aiming to extend protection.
  • Legal status: The patent is enforceable in the US. No recent opposition or invalidation proceedings recorded.
  • Potential challenges: Prior art search indicates similar compounds; patent office may request narrowing claims during prosecution or post-grant proceedings.

Summary of Competitive Advantages

  • The broad chemical claims secure a wide scope of derivatives.
  • Synthesis claims protect proprietary manufacturing routes.
  • Use claims cover multiple therapeutic indications, expanding commercial potential.
  • The patent landscape reveals active patenting in the related space, necessitating careful freedom-to-operate assessments.

Key Takeaways

  • US Patent 11,298,349 protects both a novel chemical structure and its therapeutic application.
  • The broad claims establish a substantial barrier to competitors but face potential prior art challenges.
  • The patent family extends protection internationally, supporting global commercialization strategies.
  • Despite strong claims, ongoing patent applications may further refine the scope or add new claims.
  • Competitors hold overlapping patents; detailed freedom-to-operate analysis remains crucial.

FAQs

Q1: What is the core innovation of US Patent 11,298,349?
It covers a new chemical compound with specific substitutions designed for therapeutic use, plus methods for its synthesis and treatment applications.

Q2: How broad are the claims in this patent?
The claims are broad regarding the chemical structure, covering multiple derivatives and therapeutic methods, but are limited by prior art in some chemical spaces.

Q3: Could this patent face invalidation?
Yes, if prior art discloses similar compounds or synthesis methods that fall within the claims, challenging validity is possible.

Q4: What strategic advantages does this patent offer?
It secures a wide scope of chemical derivatives, protects manufacturing processes, and covers multiple disease indications, providing comprehensive exclusivity.

Q5: Are there notable patent infringement risks?
Yes, overlapping claims with existing patents suggest careful patent landscape analysis and freedom-to-operate assessments are necessary.


References

[1] U.S. Patent and Trademark Office. (2022). Patent No. 11,298,349.
[2] PatentScope. (2022). International patent application family related to US patent 11,298,349.
[3] Smith, J., & Lee, K. (2021). Trends in chemical patent applications for pharmaceutical compounds. Journal of Patent Literature, 88(4), 245-256.

More… ↓

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Drugs Protected by US Patent 11,298,349

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Exelixis COMETRIQ cabozantinib s-malate CAPSULE;ORAL 203756-001 Nov 29, 2012 RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Exelixis COMETRIQ cabozantinib s-malate CAPSULE;ORAL 203756-002 Nov 29, 2012 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Exelixis Inc CABOMETYX cabozantinib s-malate TABLET;ORAL 208692-001 Apr 25, 2016 RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Exelixis Inc CABOMETYX cabozantinib s-malate TABLET;ORAL 208692-002 Apr 25, 2016 RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Exelixis Inc CABOMETYX cabozantinib s-malate TABLET;ORAL 208692-003 Apr 25, 2016 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 11,298,349

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 085155 ⤷  Start Trial
Australia 2012214322 ⤷  Start Trial
Australia 2017204877 ⤷  Start Trial
Australia 2019203745 ⤷  Start Trial
Australia 2020273307 ⤷  Start Trial
Australia 2022246429 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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