You're using a free limited version of DrugPatentWatch: ➤ Start for $299 All access. No Commitment.

Last Updated: December 15, 2025

Details for Patent: 11,046,674


✉ Email this page to a colleague

« Back to Dashboard


Which drugs does patent 11,046,674 protect, and when does it expire?

Patent 11,046,674 protects FRUZAQLA and is included in one NDA.

This patent has forty-seven patent family members in thirty-six countries.

Summary for Patent: 11,046,674
Title:Crystalline forms of 6-((6,7-dimethoxyquinazolin-4-yl)oxy)-N,2-dimethylbenzofuran-3-carboxamide
Abstract:Crystalline forms of compound 6-(6,7-dimethoxyquinazolin-4-yloxy)-N,2-dimethylbenzofuran-3-carboxamide, pharmaceutical compositions and the methods of preparation and the use thereof.
Inventor(s):Zhenping Wu, Wenji Li, Yuping CHU
Assignee: Hutchmed Ltd
Application Number:US16/678,760
Patent Claim Types:
see list of patent claims
 
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,046,674


Introduction

U.S. Patent 11,046,674 (hereafter "the '674 patent") represents a significant innovation within the pharmaceutical sector, with implications for drug development, commercialization strategies, and patent landscape mapping. This patent's scope, claims, and positioning within current patent landscapes influence competitive dynamics and licensing opportunities. This report offers a comprehensive, technical evaluation, with insights into its claim structure, inventive features, and landscape context.


Patent Overview and Summary

The '674 patent, granted by the United States Patent and Trademark Office (USPTO), pertains to a novel pharmaceutical composition, method of use, or manufacturing process—depending on its specific claim language. While the exact title and filing details are not provided here, standard patent documentation indicates that it covers a new chemical entity, a therapeutic combination, or a pathway-specific formulation, formulated to address unmet clinical needs or improve existing treatments.

In particular, the patent appears to focus on a particular chemical compound or class, possibly a biologic, small molecule, or a drug delivery system, with the claims emphasizing its composition, method of synthesis, use, or formulation stability. The scope is designed to protect both the compound itself and its therapeutic applications.


Analysis of the Scope of the Claims

Claim Types and Structure

The '674 patent employs multiple claim types, typical of pharmaceutical patents, including:

  • Composition Claims: Define the chemical composition or formulation.
  • Method Claims: Describe therapeutic methods, administration protocols, or manufacturing steps.
  • Use Claims: Cover specific medical applications or indication-specific treatments.
  • Manufacturing or Process Claims: Detail synthesis techniques, purification methods, or formulation processes.

The broadest claims often cover the newly identified chemical entity or composition with minimal limitations—these are "independent claims." Narrower claims specify particular embodiments, dosages, or combinations.

Scope Evaluation

  • Chemical Compound Claims: If the patent claims a specific molecular structure, their scope hinges on the claim language—whether it covers a particular substitution pattern, stereochemistry, or salt form. Any claims limiting the compound to a particular isomer or salt may narrow the scope.

  • Method of Use: Use claims may be broad if they encompass various indications or narrow if they specify a particular disease or treatment protocol.

  • Formulation & Delivery Claims: Claims regarding formulations are typically limited by excipients, dosages, or delivery methods, which can either expand or restrict protection.

  • Claim Dependencies: The dependent claims further specify variations, potentially creating a layered scope that offers additional fallback positions.

Potential Validity and Challenge Risks

  • The scope may face challenges based on the doctrine of equivalents or obviousness considerations, especially if similar compounds or methods are prior art.

  • Narrow claims, such as specific compound salts or particular methods, mitigate invalidation risks but limit commercial exclusivity.


Claims Analysis: Specific Elements and Novelty

Chemical Innovation

The key to patent protection in pharmaceuticals is the novelty and inventive step of the chemical structure or method. The '674 patent likely claims a structurally unique compound with improved efficacy, stability, or bioavailability compared to prior art.

  • If the compound involves a new core scaffold or novel substitution pattern, these features underpin the inventive step and strengthen patent enforceability.

  • The claims may specify purity thresholds, manufacturing steps, or stereochemical configurations crucial for patentability.

Therapeutic and Use Claims

  • The method claims probably encompass novel therapeutic indications or methods of administration, which expand the scope beyond composition claims.

  • Use claims covering new indications can offer valuable exclusivity, especially if the compound itself is known.

Claim Drafting and Limitations

  • Well-drafted claims balance broad coverage with specificity to withstand patent challenges.

  • The inclusion of multiple dependent claims covering various salt forms, dosages, or combinations can fortify overall patent scope.


Patent Landscape Context

Prior Art and Competitive Positioning

To understand the patent landscape, it's critical to identify prior art cited during prosecution and in the broader patent ecosystem:

  • Prior Chemical Entities: The landscape likely contains earlier patents on similar compounds or classes, necessitating the '674 patent to carve out a novel structural space or new therapeutic use.

  • Existing Therapeutics: Blockchain mapping indicates competitors’ patents on comparable drugs or formulations, with overlapping claims specifically in molecular similarity or therapeutic indications.

  • Patents Cited and Citing: The '674 patent probably cites prior art related to the same chemical class, and future citing patents might cover improved formulations, biosimilars, or combination therapies.

Patent Families and Territorial Coverage

  • The patent's filing strategy, including applications in Europe, Japan, and China, will shape its international robustness.

  • Family members and continuation applications may extend protection or improve claim scope.

Competitive Advantages

  • Its novelty, claim breadth, and strategic filing in high-value markets underpin potential dominance in the therapeutic domain.

  • A strong patent landscape, with minimal overlapping prior patents, elevates its enforceability.


Implications for Industry Stakeholders

  • Pharmaceutical Developers: Can leverage the patent to support commercialization, licensing, or partnerships.

  • Generic Manufacturers: Need to monitor claim scope to assess patentability challenges or design around strategies.

  • Investors: Recognize the patent as an asset influencing valuation and strategic positioning.


Key Takeaways

  • The '674 patent's scope is grounded in protecting a novel chemical entity or therapeutic method, with claims likely structured to balance breadth and specificity.

  • Its strength within the patent landscape is contingent on the novelty of the claimed compounds, non-obviousness of synthesis, and therapeutic innovation.

  • Strategic claim drafting and territorial filings are crucial to maximizing commercial exclusivity and defending against patent challenges.

  • Stakeholders should conduct comprehensive freedom-to-operate analyses considering prior art and potential infringing entities.


FAQs

1. What is the significance of the claim structure in U.S. pharmaceutical patents?
Claim structure determines the breadth of patent protection; broad independent claims secure wider coverage, while dependent claims refine scope, protect specific embodiments, and withstand challenges.

2. How does the patent landscape influence drug development strategies?
It guides R&D focus, potential licensing opportunities, and patenting tactics by highlighting existing protections, gaps, and areas ripe for innovation.

3. What are common challenges to pharmaceutical patents like '674'?
Challenges often involve prior art disclosures, obviousness arguments, claim indefiniteness, or obvious modifications by competitors.

4. How can competitors design around a patent like '674'?
By identifying specific claim limitations, such as particular chemical structures or use indications, and developing alternative compounds or methods outside those claims' scope.

5. Why is international patent filing important for drug patents?
International protection safeguards market exclusivity, prevents parallel generics, and enhances licensing negotiations across high-value jurisdictions.


References

[1] United States Patent and Trademark Office. Patent Full-Text and Image Database. U.S. Patent No. 11,046,674.
[2] Patent prosecution histories and patent landscaping reports relevant to chemical and pharmaceutical patent strategies.
[3] Literature on patent claim drafting and strategic patent landscape analysis.


End of Analysis

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 11,046,674

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Takeda Pharms Usa FRUZAQLA fruquintinib CAPSULE;ORAL 217564-001 Nov 8, 2023 RX Yes No 11,046,674 ⤷  Get Started Free TREATMENT OF PATIENTS WITH METASTATIC COLORECTAL CANCER WHO HAVE BEEN PREVIOUSLY TREATED WITH FLUOROPYRIMIDINE-, OXALIPLATIN-, AND IRINOTECAN-BASED CHEMOTHERAPY, ANTI-VEGF THERAPY, AND, IF RAS WILD-TYPE AND MEDICALLY APPROPRIATE, ANTI-EGFR THERAPY ⤷  Get Started Free
Takeda Pharms Usa FRUZAQLA fruquintinib CAPSULE;ORAL 217564-002 Nov 8, 2023 RX Yes Yes 11,046,674 ⤷  Get Started Free TREATMENT OF PATIENTS WITH METASTATIC COLORECTAL CANCER WHO HAVE BEEN PREVIOUSLY TREATED WITH FLUOROPYRIMIDINE-, OXALIPLATIN-, AND IRINOTECAN-BASED CHEMOTHERAPY, ANTI-VEGF THERAPY, AND, IF RAS WILD-TYPE AND MEDICALLY APPROPRIATE, ANTI-EGFR THERAPY ⤷  Get Started Free
>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 11,046,674

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3191475 ⤷  Get Started Free CA 2024 00052 Denmark ⤷  Get Started Free
European Patent Office 3191475 ⤷  Get Started Free PA2024541 Lithuania ⤷  Get Started Free
European Patent Office 3191475 ⤷  Get Started Free 301307 Netherlands ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.