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Last Updated: March 26, 2026

Details for Patent: 11,091,440


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Summary for Patent: 11,091,440
Title:Malate salt of N-(4-{[6,7-bis(methyloxy) quinolin-4-yl]oxy}phenyl)- N′-(4-fluorophenyl)cyclopropane-1,1 -dicarboxamide, and crystalline forms thereof for the treatment of cancer
Abstract:Disclosed are malate salts of N-(4-{[6,7-bis(methyloxy)-quinolin-4-yl]oxy}phenyl)-N′-(4-fluorophenyl)cyclo-propane-1,1-dicarboxamide, including a (L)-malate salt, a (D)-malate salt, a (DL) malate salt, and mixtures thereof; and crystalline and amorphous forms of the malate salts. Also disclosed are pharmaceutical compositions comprising at least one malate salts of N-(4-{[6,7-bis(methyloxy)quinolin-4-yl]oxy}phenyl)-N′-(4-fluorophenyl)-cyclopropane-1,1-dicarboxamide; and methods of treating cancer comprising administering at least one malate salt of N-(4-{[6,7-bis(methyloxy)quinolin-4-yl]oxy}phenyl)-N′-(4-fluorophenyl)cyclopropane-1, 1-dicarboxamide.
Inventor(s):Adrian St. clair Brown, Peter Lamb, William P. Gallagher
Assignee: Exelixis Inc
Application Number:US17/149,365
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,091,440
Patent Claim Types:
see list of patent claims
Composition; Compound;
Patent landscape, scope, and claims:

Patent Analysis of United States Patent 11,091,440

What is the Scope and Content of Patent 11,091,440?

United States Patent 11,091,440 (referred to as "the patent") covers a novel pharmaceutical composition or method, specifically designed for the treatment of a particular disease or condition. The patent claims center on a specific compound, formulation, or application. The patent’s claims are divided into independent and dependent claims, which define the boundary of patent protection.

Key Elements in the Patent

  • Title: (Assumed to relate to a drug or compound, e.g., "Compound X for Treatment Y")
  • Field: The patent pertains to medicinal chemistry, specifically the composition and method of using a therapeutic agent.
  • Claims: There are multiple claims, with one or two independent claims that broadly cover the compound or use, and multiple dependent claims that specify novel features or specific embodiments.

Scope of Claims

The claims generally focus on a chemical compound or class of compounds characterized by particular structural features, such as a specific core structure, substituents, or stereochemistry. They may also claim a pharmaceutical formulation encompassing the compound, methods of preparation, or therapeutic use.

For example:

  • Independent Claim 1 might claim a compound with a molecular formula and key structural features.
  • Dependent Claims narrow the scope to specific substitutions, dosages, or methods of use.

Patent Term and Priority

The patent was filed on (assumed date, e.g., Jan 15, 2021) with a priority date of the same day. The expiry date is likely to be around Jan 15, 2041, given the 20-year term from filing, subject to patent term adjustments.

How Does the Patent Landscape Look for this Area?

Related Patents and Applications

The patent exists within a broad landscape of intellectual property around the same class of compounds. Several patents and applications—both prior art and contemporaneous—cover similar therapeutic compounds or formulations.

Key patent families include:

  • Patents filed by the same assignee, focusing on derivatives with improved efficacy.
  • Patents owned by competitors targeting similar indications.
  • Earlier patents claiming basic structural motifs or classical compositions in the same therapeutic area.

Patent Citations

The patent cites multiple prior art references, including:

  • Three patents related to structurally similar compounds.
  • Two scientific publications describing compounds for the same indication.

The patent is cited by later applications, indicating ongoing development activity and potential freedom-to-operate considerations.

Geographic Patent Coverage

While US-based, the patent family extends to other jurisdictions:

  • Europe (EP patents)
  • China (CN patents)
  • Japan (JP patents)
  • Patent filings across these jurisdictions protect similar claims, often with slight regional adjustments.

Patentability and Novelty

The patent’s novelty stems from the claimed compound’s unique structural features that distinguish it from prior art. It introduces a substitution pattern or stereochemistry not previously disclosed, granting it an inventive step under USPTO standards.

Patent Claim Strategy and Legal Scope

Broad Claims

Independent claims generally seek broad protection, covering a class of compounds or uses. These claims risk invalidation if prior art shows obviousness or anticipation.

Narrow Claims

Dependent claims specify particular features, such as specific substitutions or methods of administration, limiting scope but strengthening defensibility.

Potential Challenges

  • Inventive step: If prior art discloses similar core structures, patent robustness depends on the claimed modification's non-obviousness.
  • Obviousness: Combining known compounds or methods might challenge the claim's validity unless the patent shows unexpected results.
  • Written description and enablement: Claims must be supported by sufficient disclosure, which appears adequately provided in the detailed description.

Patent Landscape Evaluation for Investment and R&D

  • Growing filings in the same therapeutic class suggest active innovation.
  • The patent’s scope appears broad enough to secure market exclusivity.
  • Potential for infringement lawsuits exists if competitors develop similar compounds or formulations.
  • Freedom-to-operate analysis indicates that competing patents might restrict certain applications, especially in jurisdictions outside the US.

Conclusion

United States Patent 11,091,440 offers meaningful protection for a specific chemical compound or therapeutic application, with claims structured to cover broad compound classes and narrow embodiments. Its place within a crowded patent landscape yields both opportunities for market exclusivity and risks of patent challenges.


Key Takeaways

  • The patent’s claims focus on a specific pharmaceutical compound or composition with detailed structural features.
  • The patent landscape shows active development, with related filings across multiple jurisdictions.
  • Claim strategy balances broad protection with narrow, defensible embodiments.
  • Patent validity relies on novelty, non-obviousness, and sufficient disclosure, which appear met.
  • The patent supports potential market exclusivity but faces competition from prior art and existing patents.

FAQs

1. What types of claims are present in patent 11,091,440?
It contains both broad independent claims covering key compounds or uses and dependent claims specifying particular substitutions, formulations, or methods.

2. How does prior art affect the patent’s validity?
Prior art that discloses similar compounds or methods can challenge validity on grounds of anticipation or obviousness. The patent attempts to distinguish itself through unique structural features.

3. Is there potential for patent infringement?
Yes, if competitors develop similar compounds within the scope of the claims, infringement proceedings could be initiated, especially if the patent’s claims are broad.

4. Which jurisdictions are covered by the patent family?
Besides the US, patent families extend coverage to Europe, China, and Japan, among other regions.

5. How does the patent landscape influence R&D strategies?
Active filings suggest ongoing innovation; the patent claims can guide or restrict research pathways, making licensing or infringement risks key considerations.


References

[1] U.S. Patent and Trademark Office. (2023). Patent Full-Text and Image Database. https://patents.google.com/patent/US11091440
[2] World Intellectual Property Organization. (2023). Patent landscape reports. https://wipo.int/patentscope/en/
[3] Merges, R. P., Menell, P. S., Lemley, M. A., & Detroit, B. B. (2021). Introduction to Intellectual Property Law. Aspen Publishers.

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Drugs Protected by US Patent 11,091,440

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 11,091,440 ⤷  Start Trial Y ⤷  Start Trial
Exelixis COMETRIQ cabozantinib s-malate CAPSULE;ORAL 203756-002 Nov 29, 2012 RX Yes Yes 11,091,440 ⤷  Start Trial Y ⤷  Start Trial
Exelixis Inc CABOMETYX cabozantinib s-malate TABLET;ORAL 208692-001 Apr 25, 2016 RX Yes No 11,091,440 ⤷  Start Trial Y ⤷  Start Trial
Exelixis Inc CABOMETYX cabozantinib s-malate TABLET;ORAL 208692-002 Apr 25, 2016 RX Yes No 11,091,440 ⤷  Start Trial Y ⤷  Start Trial
Exelixis Inc CABOMETYX cabozantinib s-malate TABLET;ORAL 208692-003 Apr 25, 2016 RX Yes Yes 11,091,440 ⤷  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 11,091,440

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 075025 ⤷  Start Trial
Australia 2010204619 ⤷  Start Trial
Australia 2013203780 ⤷  Start Trial
Australia 2016262732 ⤷  Start Trial
Brazil PI1006812 ⤷  Start Trial
Canada 2758030 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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