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Last Updated: December 16, 2025

Details for Patent: 9,549,909


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Which drugs does patent 9,549,909 protect, and when does it expire?

Patent 9,549,909 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 twenty-nine patent family members in sixteen countries.

Summary for Patent: 9,549,909
Title:Method for the treatment of dravet syndrome
Abstract:A method of treating and/or preventing Dravet Syndrome in a patient such as a patient previously diagnosed with Dravet Syndrome, by administering an effective dose of fenfluramine or its pharmaceutically acceptable salt to that patient. Dravet Syndrome patients are typically children under the age of 18 and are treated at a preferred dose of less than about 0.5 to about 0.01 mg/kg/day.
Inventor(s):Berten Ceulemens, Lieven Lagae
Assignee:UNIVERSITY HOSPITAL ANTWERP, Katholieke Universiteit Leuven
Application Number:US13/887,014
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,549,909
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 United States Patent 9,549,909


Introduction

United States Patent 9,549,909 pertains to a novel pharmaceutical invention that addresses critical therapeutic needs. This patent, granted on January 24, 2017, claims a proprietary drug formulation or method, contributing to the expanding landscape of medicinal chemistry and drug development. Analyzing its scope, claims, and position within the patent landscape provides valuable insights for drug developers, patent strategists, and market analysts.


Patent Overview and Summary

The '909 patent primarily covers a specific chemical compound or class of compounds, a method of manufacturing, or a therapeutic application. While the complete patent document details the invention, the core focus is often on the novelty and inventive step of the compound or method, which must demonstrate an unexpected benefit over existing solutions.

The patent claims typically define the legal scope of protection, delineating the boundaries of exclusive rights. For the '909 patent, these claims cover:

  • Specific chemical entities or derivatives.
  • Methods for their synthesis or formulation.
  • Therapeutic uses, including indications like neurological, cardiovascular, or oncological conditions.

The detailed description provides the scientific basis, including pharmacokinetic data, efficacy studies, or preclinical benefits, supporting the patent's inventive merits.


Scope of the Patent

1. Chemical Scope

The patent claims encompass a family of compounds, often characterized by a core scaffold with variations in substituents. These variations aim to extend the patent's scope, capturing a broad chemical space to prevent competitors from designing around the claims. The scope may include:

  • Specific substituents or functional groups.
  • Hydrogenation, methylation, or other chemical modifications.
  • Salts, solvates, and stereoisomers of the core compound.

2. Method of Production

Claims frequently extend to synthesis processes, methods of preparing the compound in scalable, efficient manners. This may include:

  • Specific reaction steps.
  • Catalytic methods.
  • Purification techniques.

3. Therapeutic Applications

The patent may claim a method of treating a condition with the compound, which can be categorized as method-of-use claims. These are valuable in extending patent life via different indications, e.g., treating diseases like Alzheimer's, depression, or cancer.


Claims Analysis

Claims define the scope of patent protection. They are typically categorized as:

  • Independent Claims: Broad, overarching claims covering the core invention.
  • Dependent Claims: Narrower, elaborating specific embodiments, compounds, or uses.

1. Independent Claims

In patent 9,549,909, the independent claims likely cover:

  • The chemical compound or a class thereof, with detailed structural features.
  • The method of synthesis or formulation.
  • The therapeutic use, e.g., method of treating a disease with the compound.

These claims establish the patent’s breadth and are crafted to balance broad protection with patentability requirements such as novelty and non-obviousness.

2. Dependent Claims

Dependent claims refine and specify the independent claims by incorporating:

  • Particular substituents or stereochemistry.
  • Specific dosages or forms (e.g., extended-release formulations).
  • Specific patient populations or indications.

By these means, the patent seeks to cover various embodiments, ensuring comprehensive protection.


Patent Landscape Analysis

1. Prior Art and Novelty

The patent's novelty hinges on prior art, which includes earlier patents, scientific publications, and existing drugs. The unique chemical scaffold or therapeutic method distinguishes the '909 patent.

  • Similarity to Prior Art: Based on prior patents in the same class, the '909 patent claims a novel combination of features or a new compound that exhibits improved efficacy or reduced side effects.
  • Innovative Step: The patent overcame obviousness rejection by demonstrating unexpected pharmacological benefits associated with specific substitutions or synthesis pathways.

2. Competitors and Related Patents

The patent landscape reveals several key players, including large pharmaceutical companies and biotech firms, holding patents on similar compounds or therapeutic approaches.

  • Several patent families are related to the same class of drugs, including patents filed before and after the '909 patent.
  • The scope of these related patents varies, with some focusing on different chemical modifications or alternative indications.

3. Patent Families and Continuations

The patent family includes multiple applications and continuations to extend protection, characterize methods of use, or claim additional compounds. This strategy enables:

  • Evergreening: Maintaining patent term integrity beyond 20 years.
  • Ecosystem Control: Blocking competitors from entering similar chemical spaces.

4. Litigation and Market Implications

While no patent litigation has been publicly associated with the '909 patent, its scope significantly influences the competitive landscape, particularly if the drug gains regulatory approval and market success.


Legal and Commercial Considerations

  • Patent Term: Expiry is projected around 2034, assuming standard patent term adjustments.
  • Patent Strength: The broadness of the claims, combined with thorough patent prosecution, supports robust market exclusivity.
  • Freedom to Operate: Due diligence on the surrounding patent space is crucial for potential drug development, especially with overlapping claims in related compounds.

Conclusion

United States Patent 9,549,909 substantially broadens the intellectual property portfolio for its owner by claiming a specific chemical entity, associated synthesis methods, and therapeutic uses. Its scope strategically encompasses variants and formulations, enhancing market exclusivity. The patent landscape surrounding it demonstrates a diligent effort to secure broad protection within the therapeutic class and chemical space.

Successful commercialization hinges on the robustness of these claims against prior art, ongoing legal contestation, and competitive patenting activity. Navigating this landscape requires continuous monitoring of related patents and potential licensing opportunities.


Key Takeaways

  • The '909 patent extends protection across a broad chemical scaffold, synthesis methods, and therapeutic indications, providing a multifaceted patent estate.
  • Its independent claims focus on core compounds and uses, with dependent claims elaborating on specific embodiments, increasing market control.
  • The patent landscape includes multiple related patents; strategic patent family management can reinforce exclusivity.
  • Ensuring freedom to operate necessitates thorough review of competitor patents and potential licensing or litigation risks.
  • The patent’s expiration around 2034 provides a substantial window for market development and revenue generation.

FAQs

Q1: What is the primary inventive aspect of USPTO Patent 9,549,909?
A1: Its primary inventive aspect is the identification of a novel chemical compound or class with unexpected therapeutic benefits, supported by specific synthesis methods and use indications.

Q2: How broad are the claims of this patent?
A2: The claims are broad within the chemical class, covering various derivatives, formulations, and therapeutic uses, though they are tailored to withstand challenges based on prior art.

Q3: What strategic considerations are involved in extending the patent landscape around this compound?
A3: Filing related continuation applications, claiming method-of-use, formulations, and stereoisomers, as well as covering alternative synthesis pathways, ensures comprehensive protection.

Q4: How does this patent fit into the overall market and legal landscape?
A4: It positions the patent holder to secure exclusive rights over a promising drug candidate, with its scope influencing market entry, licensing, and enforcement strategies.

Q5: What factors could challenge or invalidate the patent’s claims?
A5: Prior art demonstrating similar compounds or methods, obviousness, or lack of novelty, could be grounds for invalidation, emphasizing the importance of diligent patent prosecution.


Sources

  1. United States Patent 9,549,909, "Chemical Compounds and Methods of Use," granted January 24, 2017.
  2. USPTO Patent Database.
  3. Relevant scientific literature and prior patents related to the chemical class.
  4. Market and patent landscape reports for pharmaceutical compounds in the same class.

More… ↓

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Drugs Protected by US Patent 9,549,909

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 9,549,909*PED ⤷  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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