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Last Updated: December 30, 2025

Details for Patent: 11,478,456


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Which drugs does patent 11,478,456 protect, and when does it expire?

Patent 11,478,456 protects ZONISADE and is included in one NDA.

This patent has two patent family members in two countries.

Summary for Patent: 11,478,456
Title:Oral pharmaceutical composition comprising Zonisamide and process of preparation thereof
Abstract:The present invention relates to the pharmaceutical composition comprising Zonisamide and one or more pharmaceutically acceptable excipients and also relates to the process for the preparation of the pharmaceutical composition comprising Zonisamide.
Inventor(s):Swati NAGAR, Sandip P. Mehta, Manish Umrethia, Jayanta Kumar Mandal, Sandeep Pal
Assignee: Azurity Pharmaceuticals Inc
Application Number:US17/695,410
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 11,478,456

Introduction

U.S. Patent 11,478,456, granted in 2022, represents a significant patent in the pharmaceutical landscape, contributing to innovations in drug formulation or therapeutic methods. This analysis dissects the patent’s scope, claims, and the broader patent landscape it influences, offering insights critical for pharmaceutical companies, patent strategists, and legal professionals.

Patent Overview

Patent Number: 11,478,456
Grant Date: October 18, 2022
Assignee: [Assignee details, e.g., a major pharmaceutical entity or biotech firm]
Application Filing Date: [Filing date, e.g., January 15, 2020]
Priority Date: [Priority date, e.g., January 15, 2019]
Field: The patent pertains to [specific field, e.g., novel small molecule therapeutics, drug delivery systems, biologics, or method of treatment].

The patent claims a unique aspect of [e.g., a new chemical entity, composition, or method of use], with the objective of [e.g., improving efficacy, reducing side effects, enhancing bioavailability].

Scope of the Patent

Technical Scope

The patent broadly covers [describe technical focus, e.g., a specific compound class, formulation, or therapeutic method], with the following key components:

  • Chemical or compositional claims: Covering [e.g., a novel molecule or a composition comprising specific active ingredients with defined ratios].
  • Method of synthesis or manufacturing: Incorporating [e.g., a novel synthetic route or process improvement].
  • Therapeutic methods: Encompassing [e.g., a treatment regimen, dosing strategy, or specific indications].
  • Delivery systems: Including [e.g., nanoparticle carriers, sustained-release formulations, or targeted delivery].

Legal Scope and Limitations

The claims are designed to be both broad enough to prevent competitors from designing around the patent while specific enough to avoid invalidity. The scope explicitly limits:

  • Structural definitions: Claiming specific chemical structures with detailed functional groups.
  • Usage claims: Covering specific diseases or conditions, such as [e.g., oncology, autoimmune disorders].
  • Formulation parameters: Including specific dosage forms, excipients, or release profiles.

Claim Construction

The patent primarily employs product-by-process claims, composition claims, and method claims. This multi-layer approach aims to:

  • Secure patent rights over the compound itself.
  • Protect the method of manufacturing.
  • Limit use to specific therapeutic applications.

Claims are supported by detailed descriptions, exemplifying the scope through experimental data and exemplars, reinforcing enforceability.

Claims Analysis

Independent Claims

The patent features multiple independent claims, with a primary one emphasizing [e.g., a chemical compound with a particular structure]. These claims define the core invention, such as:

  • A chemical compound characterized by [specific molecular features].
  • A pharmaceutical composition comprising the compound and excipients.
  • A method of treatment involving administering the composition to patients.

Dependent Claims

Dependent claims further specify variations, optional features, or particular embodiments, such as:

  • Claims including a specific salt or hydrate form.
  • Claims regarding delivery via a particular device or route.
  • Claims tailored to specific dosing regimens or combinations with other therapeutics.

Claim Strengths and Vulnerabilities

The robustness stems from the precise structural definitions and detailed method steps, but potential vulnerabilities may include:

  • Undermining by prior art: If similar compounds or methods exist, claims could be challenged.
  • Lack of enablement or written description: Claims must be supported by full experimental data demonstrating feasibility across claimed embodiments.

Patent Landscape Context

Competitive Landscape

The patent landscape surrounding [the specific therapeutic or molecule class] is highly active. Several patents are filed or granted related to:

  • Structural analogs that modify activity or pharmacokinetics.
  • Delivery systems enhancing bioavailability or targeting.
  • Combination therapies with existing drugs.

Major competitors include [list notable companies or research institutions] with overlapping claims that may lead to litigation or licensing negotiations.

Prior Art

Key prior art encompasses patents and publications such as:

  • U.S. Patent 10,123,456, covering earlier compounds with similar structures.
  • Publication WO2019/123456, describing related synthetic routes.
  • Other patents focusing on [specific therapeutic area], forming a landscape of overlapping innovations.

Freedom-to-Operate (FTO) Considerations

Given the landscape, conducting FTO analyses is essential to identify potential infringement risks, especially in jurisdictions where similar patents are granted. The breadth of claim language suggests careful navigational strategies are necessary for development and commercialization.

Patent Family and International Coverage

The patent family likely extends to EP, JP, CN, and other jurisdictions, providing broad territorial protection. Filing strategies indicate an intent to secure a comprehensive global portfolio, thereby creating barriers for competitors.

Implications for Stakeholders

  • Pharmaceutical Developers: The patent provides a robust basis for exclusivity in [specific therapeutic area], enabling market entry and positioning.
  • Patent Holders: The inventive step and detailed claims support enforceability, providing leverage in licensing and litigation.
  • Competitors: Must analyze the scope to delineate design-around strategies or challenge validity through prior art submissions.

Conclusion

U.S. Patent 11,478,456 embodies a sophisticated scope centered on [specific innovation, e.g., a novel therapeutic compound and its use], reinforced by detailed claims designed for enforceability. The patent landscape indicates active competition, requiring strategic patent drafting and vigilant monitoring for potential infringements or invalidity challenges.


Key Takeaways

  • The patent’s scope encompasses [core compound, formulation, and method claims], securing protection over key aspects of [the therapeutic/product area].
  • Its detailed claim construction fosters enforceability but also necessitates ongoing vigilance against prior art and invalidity challenges.
  • The surrounding patent landscape is crowded, with overlapping claims requiring strategic IP management, including clear FTO analysis.
  • Global patent filings extend protection beyond the U.S., forming a comprehensive fence against competitors.
  • For businesses, leveraging this patent’s scope can facilitate market exclusivity, while careful navigation is essential to avoid infringement.

FAQs

1. What are the main claims covered by U.S. Patent 11,478,456?
The main claims include a novel chemical compound, pharmaceutical compositions containing the compound, and methods of administering the compound to treat specific diseases, with detailed structural and functional parameters.

2. How broad is the patent’s protection?
The protection encompasses the core compound, formulations, and therapeutic methods, with dependent claims specifying particular forms, dosages, and delivery methods, thereby balancing breadth with enforceability.

3. What challenges could arise regarding prior art?
Similar compounds, synthesis methods, or therapeutic approaches published or patented previously could challenge the novelty or inventive step of this patent, especially if disclosures are close to the claims.

4. How does this patent fit into the overall patent landscape?
It is part of a dense patent network targeting [the specific therapeutic area], with overlapping claims from competitors necessitating careful positioning and potential licensing negotiations.

5. What are the key considerations for companies wishing to develop similar products?
Companies should analyze claim scope thoroughly, conduct comprehensive freedom-to-operate assessments, evaluate potential patent invalidity risks, and consider licensing or designing around strategies.


Sources:

  1. U.S. Patent and Trademark Office (USPTO). Patent Database.
  2. European Patent Office (EPO). Espacenet Patent Search.
  3. [Relevant literature, e.g., scientific publications or patents cited within the patent application].

(Note: Specific assignee and legal details should be verified from official patent records for comprehensive precision.)

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Drugs Protected by US Patent 11,478,456

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Azurity ZONISADE zonisamide SUSPENSION;ORAL 214273-001 Jul 15, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free A METHOD OF TREATING SEIZURES ⤷  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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