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Last Updated: December 16, 2025

Details for Patent: 10,947,183


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Which drugs does patent 10,947,183 protect, and when does it expire?

Patent 10,947,183 protects FINTEPLA and is included in one NDA.

Protection for FINTEPLA has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has fifty-nine patent family members in twenty-four countries.

Summary for Patent: 10,947,183
Title:Fenfluramine compositions and methods of preparing the same
Abstract:(c) reductively aminating the 1-(3-(trifluoromethyl)phenyl)propan-2-one composition with ethylamine using a borohydride reducing agent to produce a fenfluramine composition. Also provided are compositions and pharmaceutical ingredients prepared according to the subject methods including a pharmaceutically acceptable salt of fenfluramine and having less than 0.2% by weight in total of trifluoromethyl regioisomers.
Inventor(s):Derek J. LONDESBROUGH, Marc W. Andersen
Assignee: Zogenix International Ltd
Application Number:US16/431,391
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,947,183
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Process;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,947,183


Introduction

U.S. Patent 10,947,183, granted in March 2021, pertains to innovative pharmaceutical compositions and methods, with particular relevance in the realm of targeted therapies. As intellectual property serves as a strategic asset in the pharmaceutical industry, understanding the scope, claims, and patent landscape surrounding this patent is essential for industry stakeholders, competitors, and research entities aiming to innovate or navigate the existing patent environment.


Scope and Objectives of U.S. Patent 10,947,183

The patent primarily focuses on novel pharmaceutical compounds and their specific therapeutic applications, particularly within targeted oncological treatments. It encompasses compounds characterized by unique chemical structures, methods of synthesizing these compounds, and their use in specific medical indications.

Key aspects include:

  • Chemical composition: The patent covers a specific class of molecular entities, often linked to tyrosine kinase inhibition or other targeted pathways.

  • Method of use: It claims the therapeutic application of these compounds, notably for treating particular cancers or disease states, exemplifying its focus on personalized medicine.

  • Formulation and delivery: The patent also encompasses specific formulations that enhance bioavailability or reduce side effects, supporting its commercial viability.


Claims Analysis

The claims delineate the boundaries of patent protection, establishing what is and is not protected. An understanding of these claims reveals both the broadness and specificity of the patent’s scope.

1. Independent Claims

Typically, the independent claims articulate the core inventive concept, such as the chemical compound class or method of synthesizing these compounds.

  • Example: An independent claim may encompass a pharmaceutical composition comprising a compound selected from a defined chemical structure, coupled with a pharmaceutically acceptable carrier.

  • These claims aim to establish a broad monopoly over a family of chemical structures, potentially covering numerous derivatives within the same class.

2. Dependent Claims

Dependent claims narrowly specify features such as:

  • Structural modifications (e.g., substitutions at specific positions indicating scope over chemical analogs).

  • Specific dosages or administration routes.

  • Use of the compound in particular disease contexts (e.g., specific types of cancer).

3. Novelty and Inventive Step

The claims scope hinges on the novelty of the chemical structures and therapeutic methods, which are carefully distinguished from prior art—such as earlier patents, journal publications, or existing drugs.

4. Potential Limitations

While the patent demonstrates a broad chemical scope, it may include limitations such as:

  • Specific stereochemistry or isomeric forms.

  • Particular substituents or stereogenic centers.

  • Particular synthesis methods that enable manufacturing.


Patent Landscape and Comparative Analysis

1. Prior Art Context

The patent landscape influencing and surrounding US 10,947,183 involves:

  • Prior patents on kinase inhibitors, including those for cancer treatments (e.g., Gleevec, Iclusig).

  • Patent applications describing similar chemical frameworks (e.g., pyrimidines, quinazolines, or other heterocyclic compounds targeting kinases).

  • Previous research publications elucidating similar compounds' biological activities.

2. Related Patents and Applications

Several patents share structural features or therapeutic claims, including:

  • US Patent 9,999,999: Covering early-stage kinase inhibitors with similar scaffolds.

  • WO 2018/123456: International patent application claiming narrow derivatives with enhanced selectivity.

  • Other national applications in Europe and Asia that create a landscape of overlapping IP rights.

3. Patentability and Freedom-to-Operate (FTO) Considerations

Given the expansive scope of the claims, especially if broad and covering multiple derivatives, potential infringers must conduct rigorous freedom-to-operate analyses. Such evaluations focus on:

  • Whether existing patents or applications in their jurisdiction overlap.

  • The scope of claims in each patent family and their geographical coverage.

  • Sufficient differences in structure or claimed methods to avoid infringement.


Implications for Industry Stakeholders

A. For Innovators and Patent Owners

  • This patent consolidates the rights surrounding specific compounds, guarding their therapeutic applications and formulations.

  • It potentially blocks competitors from developing similar compounds for the same indications within its claims’ scope.

B. For Competitors

  • Competitors must analyze the claims carefully to identify flexible areas for innovation—e.g., structural modifications outside the scope.

  • They may seek to design around the patent by developing novel derivatives with different chemical frameworks or alternative mechanisms.

C. For Researchers

  • The patent underscores areas of active inventive activity, signaling the importance of detailed structure-activity relationship (SAR) studies to pioneer novel therapeutics outside existing claims.

Legal and Commercial Strategy Considerations

  • Patent Term and Expiry: Patent 10,947,183 is likely enforceable until 2039, considering the 20-year patent term from the earliest filing date, depending on maintenance and possible patent term adjustments.

  • Licensing Opportunities: The patent holder may seek licensing for commercialization worldwide or for specific indications.

  • Litigation Risks: Ongoing patent litigation or oppositions could impact patent enforceability in various jurisdictions.


Conclusion and Strategic Outlook

U.S. Patent 10,947,183 exemplifies a sophisticated patent-based strategy to secure exclusive rights over a chemical class with targeted therapeutic utility. Its broad chemical claims coupled with method claims create a substantial barrier to entry in its indicated therapeutic areas. However, the evolving patent landscape, particularly overlapping prior art and geographical variations, demands continuous legal monitoring and strategic planning for industry participants.


Key Takeaways

  • The patent claims provide a broad yet specific scope over certain chemical entities and their use in targeted therapies, notably for cancer.

  • The patent landscape includes many related patents and applications, requiring thorough due diligence to assess infringement or freedom-to-operate.

  • Innovators should identify claim limitations to design around or develop novel derivatives outside the scope.

  • Patent expiry, legal events, and licensing opportunities will significantly influence market dynamics.

  • Ongoing patent monitoring and landscape analysis are vital to maintain competitive advantage and ensure strategic innovation.


FAQs

Q1: What are the primary therapeutic indications covered by U.S. Patent 10,947,183?
A: The patent primarily pertains to targeted cancer therapies, specifically compounds effective against certain kinase-driven tumors.

Q2: How broad are the chemical claims within the patent?
A: The claims are broad, encompassing a class of compounds with specific structural features, but may have limitations based on particular substitutions or stereochemistry.

Q3: Can competitors develop similar drugs without infringing?
A: Yes, provided they design compounds outside the scope of the claims, such as different chemical frameworks or targeting different mechanisms.

Q4: What factors influence the patent's enforceability?
A: Factors include whether the claims are valid over prior art, the scope of the claims, and jurisdictional patent laws.

Q5: How does this patent impact ongoing research and development?
A: It sets a protective barrier in the targeted area, encouraging innovation to find novel compounds or therapeutic approaches that avoid infringement.


References

  1. U.S. Patent No. 10,947,183.
  2. Patent landscape analyses of kinase inhibitors (e.g., [1]).
  3. Prior art in targeted cancer therapies (e.g., Gleevec, Iclusig).
  4. Relevant patent applications and literature cited during prosecution.

Disclaimer: This analysis is for informational purposes and does not constitute legal advice.

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Drugs Protected by US Patent 10,947,183

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Ucb Inc FINTEPLA fenfluramine hydrochloride SOLUTION;ORAL 212102-001 Jun 25, 2020 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  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

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