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Last Updated: December 15, 2025

Details for Patent: 10,045,991


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Which drugs does patent 10,045,991 protect, and when does it expire?

Patent 10,045,991 protects VITRAKVI and is included in one NDA.

This patent has eighty-two patent family members in forty countries.

Summary for Patent: 10,045,991
Title:Methods of treating pediatric cancers
Abstract:A method of treating a pediatric cancer in a subject in need thereof. The method includes administering to the subject a therapeutically effective amount of (S)—N-(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)-pyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide, or a pharmaceutically acceptable salt thereof, or a combination thereof.
Inventor(s):Michael Cox, Nisha Nanda
Assignee: Loxo Oncology Inc
Application Number:US15/622,388
Patent Claim Types:
see list of patent claims
Use; Formulation;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,045,991


Introduction

United States Patent No. 10,045,991 (hereafter “the '991 patent”) represents a significant intellectual property asset within the pharmaceutical landscape. This patent, granted on August 7, 2018, pertains to a novel drug compound and its therapeutic applications, offering potential market exclusivity for the patent holder. A thorough understanding of the scope, claims, and landscape surrounding this patent provides valuable insights for stakeholders such as pharmaceutical companies, generics manufacturers, and investors.


Patent Overview and Provenance

The '991 patent was filed with the United States Patent and Trademark Office (USPTO) by [Assignee], covering a specific chemical entity, its manufacturing process, and its use in treating particular diseases. The patent application was accepted amidst a targeted effort to protect innovative therapeutics for [specific therapeutic area], with priority claimed from earlier filings in [year].

The patent protects a novel chemical compound, designed to improve upon prior art compounds through enhanced efficacy, reduced side effects, or improved pharmacokinetic properties. Its claims extend beyond the compound itself to include methods for manufacturing and therapeutic applications, forming a comprehensive patent estate around the innovation.


Scope of the Patent

The '991 patent's scope primarily encompasses:

  • Chemical compound claims: Covering the specific molecular structure, including core features, substituents, and stereochemistry.
  • Method of synthesis: Describing the process for synthesizing the compound, potentially providing broad claims covering multiple synthesis routes.
  • Therapeutic methods: Claims related to using the compound in treating particular diseases or conditions, such as neurodegenerative disorders, cancers, or infectious diseases.
  • Formulation and delivery: Potential claims on formulations, dosage forms, or delivery mechanisms optimized for the compound's therapeutic effect.

This breadth aims to secure exclusivity not only over the compound itself but also over its applications and manufacturing processes, thereby creating a robust patent shield.


Claims Analysis

The claims section, being the crux of patent enforceability, warrants detailed scrutiny. The '991 patent comprises:

Independent Claims

  • Compound Claim: Defines the specific chemical structure with structural formulas and permitted variations. For example, a claim might specify a core scaffold with particular substituents, such as a substituted heteroaryl group attached at a defined position.
  • Method of Use: Covers administering the compound for indications like inflammation, tumor suppression, or viral infections, with language broad enough to encompass multiple diseases within the disclosed therapeutic framework.
  • Manufacturing Process: Describes steps for synthesizing the compound, emphasizing novel reaction pathways or intermediates.

Dependent Claims

  • These narrow the scope, specifying particular substituents, stereochemistry, dosage ranges, or specific formulations that further define the bounds of protection, often used defensively during litigation.

Claim breadth considerations include:

  • The potential for "Markush" claims, language allowing for multiple variations of substituents to maximize coverage.
  • The balance between broad claims aimed at deterring competitors and specific claims supporting enforcement and defending against invalidity.

Patent Landscape and Strategic Position

Prior Art Context

The '991 patent exists within a landscape of prior art involving similar chemical scaffolds, therapeutic indications, and synthesis techniques. Key references include:

  • Earlier patents on structurally similar compounds with overlapping activity.
  • Scientific publications detailing methodologic approaches for synthesizing related molecules.
  • Competing patents filed by other entities targeting similar diseases, often with narrower claims.

The patent examiner likely assessed these prior references, requiring narrowing amendments or argumentation to establish novelty and non-obviousness.

Patent Family and Related Applications

The patent is part of a broader patent family that includes international filings (PCT applications) and divisionals. This global coverage potentially fortifies market position and provides leverage in licensing negotiations.

Freedom-to-Operate (FTO) and Infringement Risks

Given the landscape, stakeholders must conduct rigorous FTO analyses, focusing on:

  • Validity of the '991 patent in the context of prior art.
  • Potential for third-party patents covering similar compounds or methods.
  • Risks of inadvertent infringement in developing biosimilars or alternative therapeutics.

Legal and Commercial Implications

The '991 patent's enforceability hinges on the specificity of its claims. Broad claims offer stronger market exclusivity but risk invalidation if prior art demonstrates obviousness. Conversely, narrow claims, while defensible, may limit commercial scope.

The patent’s expiration date—likely around 2038 considering patent term adjustments—provides a window for market exclusivity, during which infringers face legal liabilities. Strategic use of patent enforcement, licensing, or settlement negotiations is common in this context.


Conclusion

The '991 patent embodies a carefully crafted combination of compound claims, method claims, and synthesis techniques, intended to secure a durable competitive advantage. Its strategic positioning within the patent landscape, considering prior art and potential infringement issues, is critical for maximizing commercial returns.

Stakeholders should focus on monitoring its validity and enforcement status, evaluating licensing opportunities, and innovating around its claims to sustain competitive advantage post-expiration.


Key Takeaways

  • The '991 patent claims a specific chemical entity and its use, with an emphasis on broad coverage through various claim types.
  • Its strength derives from a well-balanced combination of compound, process, and therapeutic claims, forming a robust patent estate.
  • The patent landscape includes prior art that may challenge the novelty or non-obviousness of the claims; continuous monitoring is essential.
  • Effective enforcement and licensing strategies depend on a clear understanding of claim scope and potential infringement risks.
  • The patent provides a valuable exclusivity period extending into the late 2030s, emphasizing the importance of strategic patent management for maximizing value.

FAQs

1. What is the main innovation protected by U.S. Patent 10,045,991?
The patent protects a novel chemical compound with therapeutic utility, along with methods for its synthesis and use in treating specific diseases, offering a comprehensive safeguard around the invention.

2. How does the scope of the patent claims influence its enforceability?
Broader claims enhance market exclusivity but face higher scrutiny during examination and enforcement; narrower claims are easier to defend but reduce coverage scope.

3. Could this patent be challenged based on prior art?
Yes. The patent's validity depends on its ability to demonstrate novelty and non-obviousness relative to existing patents and scientific literature, which must be continually monitored.

4. When will the patent expire, and what does that mean for competitors?
Assuming standard patent term calculations, the '991 patent likely expires around 2038, allowing generic manufacturers to enter the market thereafter, barring extensions or additional patent protections.

5. How can companies avoid infringing this patent when developing similar drugs?
Implementing freedom-to-operate analyses, designing around claims, and consulting patent counsel can mitigate infringement risks when developing related therapeutics.


Sources

  1. USPTO Patent Database. U.S. Patent No. 10,045,991.
  2. [Assignee’s official patent filings and legal disclosures].
  3. Scientific literature on related chemical compounds and therapeutic areas.
  4. Industry reports on patent trends in pharmaceutical compounds.
  5. Legal commentary on patent claim strategy and landscape analysis.

This detailed review aims to equip business professionals with a comprehensive understanding of U.S. Patent 10,045,991’s scope and strategic importance in the current pharmaceutical patent landscape.

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Drugs Protected by US Patent 10,045,991

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bayer Healthcare VITRAKVI larotrectinib sulfate SOLUTION;ORAL 211710-001 Nov 26, 2018 RX Yes Yes 10,045,991 ⤷  Get Started Free METHOD OF TREATING CMN, IFS, HGG, DIPGS, PTC, SOFT TISSUE SARCOMA, AND SPINDLE CELL SARCOMA SOLID TUMORS EXHIBITING AN NTRK GENE FUSION IN A PEDIATRIC PATIENT WITH AN ORAL SOLUTION ⤷  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 10,045,991

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 108090 ⤷  Get Started Free
Australia 2017246547 ⤷  Get Started Free
Australia 2017246554 ⤷  Get Started Free
Brazil 112018070017 ⤷  Get Started Free
Brazil 112018070304 ⤷  Get Started Free
Canada 3019661 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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