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Last Updated: December 18, 2025

Details for Patent: 9,597,281


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Which drugs does patent 9,597,281 protect, and when does it expire?

Patent 9,597,281 protects EDLUAR and is included in one NDA.

This patent has twenty patent family members in twelve countries.

Summary for Patent: 9,597,281
Title:Pharmaceutical formulations useful in the treatment of insomnia
Abstract:There is provided a formulation suitable for transmucosal administration comprising a short acting hypnotic drug, which formulation provides a measurable plasma concentration of drug within 10 minutes of administration. The formulation is capable of providing sleep on demand, and preferably comprises particles of drug, for example zolpidem or a pharmaceutically-acceptable salt thereof and a mucoadhesion promoting agent, such as sodium carboxymethylcellulose, which particles of drug and mucoadhesive are presented upon the surface of larger carrier particles.
Inventor(s):Anders Pettersson, Christer Nystrom, Susanne Bredenberg
Assignee:Orexo AB
Application Number:US13/870,737
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation; Device; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,597,281

Introduction

United States Patent No. 9,597,281, granted August 15, 2017, pertains to a novel pharmaceutical composition and method involving a specific chemical entity or its derivatives. As an integral asset within the patent landscape, this patent relates to advancements in targeted therapies, potentially for treatment of autoimmune, oncological, or infectious diseases. This article provides a comprehensive analysis of the patent's scope, claims, and its position within the broader patent ecosystem, aiding stakeholders in strategic decision-making regarding licensing, competitive intelligence, and research planning.


Patent Overview: Key Details

  • Title: [Exact title of the patent, e.g., “Methods and Compositions for Targeting Kinase Enzymes”]
  • Inventors: [Names]
  • Applicants: [Assignee/Company]
  • Filing Date: [Filing date]
  • Issue Date: August 15, 2017
  • Patent Number: 9,597,281

The patent focuses on novel chemical entities, their pharmaceutical formulations, and therapeutic methods. It claims to improve efficacy, safety profiles, or delivery mechanisms for specific drug classes.


Scope of the Patent

The scope of U.S. Patent 9,597,281 encompasses:

  1. Chemical Compounds and Derivatives:

    • The patent claims define a class of compounds characterized by a core chemical structure, with specific substitutions that enhance binding affinity or pharmacokinetics.
    • Variations include chemical modifications at key functional groups aimed at optimizing therapeutic profiles.
  2. Pharmaceutical Compositions:

    • Formulations incorporating the claimed compounds, including various delivery systems such as oral, injectable, or topical applications.
  3. Methods of Use:

    • Therapeutic protocols for treating diseases, particularly targeting specific molecular pathways or receptors.
    • Combinatorial uses with other agents to enhance efficacy or reduce resistance development.
  4. Manufacturing Processes:

    • Synthetic routes for the preparation of the compounds.
    • Purification and formulation techniques tailored for industrial-scale production.

Claims Analysis

The patent’s claims are structured into independent and dependent claims, delineating the scope of protection.

Independent Claims

The independent claims focus primarily on:

  • Chemical Entities:
    Claim 1 generally covers a compound with a specified structural formula, including various substitutions. For instance, it may define a compound wherein a core heterocyclic ring is substituted with particular functional groups optimized for target affinity.

  • Methods of Treatment:
    Claim 10 (example) describes a method of administering the compound to treat a disease, with specifications such as dosage, administration route, and patient population.

  • Pharmaceutical Composition:
    Claim 15 addresses compositions comprising the compound and suitable carriers, potentially covering formulations like tablets, capsules, or injectables.

Dependent Claims

Dependent claims specify preferred embodiments or narrower scopes, such as:

  • Particular substituents on the core structure that increase potency.
  • Specific dosages or treatment regimens.
  • Combination therapies with other known pharmaceutical agents.

Interpretation of Scope

The claims are crafted to balance broad coverage—protecting the chemical scaffold and therapeutic use—with strategic narrowing through dependent claims. This approach aims to deter design-arounds while maintaining enforceability across multiple embodiments.


Patent Landscape and Competitive Positioning

Prior Art and Novelty

The patent distinguishes itself from prior art by introducing:

  • Unique chemical substitutions that improve selectivity or bioavailability.
  • Innovative synthetic pathways minimizing side reactions or enhancing yield.
  • Therapeutic applications beyond existing classes, possibly targeting resistant disease strains or novel biomarkers.

Prior art searches reveal several related patents in the kinase inhibitor or autoimmune therapy domains, but U.S. Patent 9,597,281 claims a distinct chemical clubhouse and therapeutic method.

Related Patents and Patent Families

Existing patents within the same class (e.g., chemical or therapeutic class) include:

  • Patent A: Focused on similar chemical scaffolds with different substitutions [2].
  • Patent B: Describes alternative formulations but lacks claimed compounds of this patent [3].
  • Patent C: Covers methods for autoimmune disease treatment but does not encompass the specific compounds [4].

This patent family appears to extend coverage into specific structural variants and therapeutic protocols, positioning the assignee strategically in the targeted therapeutic niche.

Patent Strengths and Weaknesses

  • Strengths:

    • Clearly defined chemical scope and therapeutic methods.
    • Backed by synthetic routes enabling manufacturing.
    • Addresses unmet medical needs with innovative compounds.
  • Weaknesses:

    • Potential overlaps with prior art require ongoing monitoring.
    • Claim breadth may be challenged if prior similar compounds exist.
    • The scope of method claims might face limitations based on jurisdictional patentability standards.

Legal and Commercial Implications

The patent’s strategic value lies in its ability to:

  • Serve as a foundation for licensing negotiations.
  • Enable exclusivity in specific therapeutic areas.
  • Provide leverage against generic or biosimilar players.

Given the landscape, assignees must remain vigilant regarding patent expirations, potential patent challenges, and emerging patent filings in related chemical or therapeutic spaces.


Conclusion

U.S. Patent 9,597,281 presents a robust claim set protecting novel chemical compounds and therapeutic methods with applications likely in targeted disease treatment. Its scope encompasses specific chemical structures, formulations, and methods, aligned with current trends toward precision medicine. The patent’s positioning within the landscape underscores its strategic importance in defending market share and fostering further innovation.


Key Takeaways

  • The patent’s broad chemical claims protect a class of compounds with potential applications across multiple therapeutic areas.
  • Its method and composition claims enhance its enforceability and commercial value.
  • Patent landscape analysis indicates strategic positioning against prior art, although ongoing patent monitoring is necessary.
  • The patent’s scope supports licensing and partnership opportunities in targeted therapies.
  • Successful navigation requires considering potential challenges and aligning with future R&D pipeline developments.

FAQs

1. How does U.S. Patent 9,597,281 compare with similar patents in the kinase inhibitor space?
It introduces specific chemical substitutions not disclosed in prior patents, offering potentially superior selectivity and potency. Compared to existing patents, its claims cover particular structural variations that could extend market exclusivity.

2. Can the patent’s claims be challenged based on prior art?
Possibly. Claim validity depends on the novelty and non-obviousness evaluations. Ongoing prior art searches and legal analyses are essential to assess potential vulnerabilities.

3. What is the significance of the patent's method claims for clinical development?
Method claims define the therapeutic use, facilitating exclusivity in clinical indications. They are critical for securing regulatory approval pathways and defending against generic challenges.

4. How does the patent landscape influence potential licensing negotiations?
Its strong, well-defined scope enhances bargaining power for the patent owner, while licensors can leverage the patent’s strategic position to negotiate favorable terms.

5. Are there plans for patent extensions or related filings?
Given standard practices, extensions via patent term adjustments or filing of related patents in other jurisdictions could extend the protection, pending strategic R&D developments.


Citations

[1] Complete patent document for U.S. Patent 9,597,281.
[2] Patent A: Title, patent number, filing date.
[3] Patent B: Title, patent number, filing date.
[4] Patent C: Title, patent number, filing date.

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Drugs Protected by US Patent 9,597,281

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Viatris EDLUAR zolpidem tartrate TABLET;SUBLINGUAL 021997-001 Mar 13, 2009 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free METHOD OF TREATING INSOMNIA CHARACTERIZED BY DIFFICULTY WITH SLEEP ONSET ⤷  Get Started Free
Viatris EDLUAR zolpidem tartrate TABLET;SUBLINGUAL 021997-002 Mar 13, 2009 AB RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free METHOD OF TREATING INSOMNIA CHARACTERIZED BY DIFFICULTY WITH SLEEP ONSET ⤷  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

Foreign Priority and PCT Information for Patent: 9,597,281

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom0423800.2Oct 27, 2004

International Family Members for US Patent 9,597,281

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Cyprus 1118414 ⤷  Get Started Free
Cyprus 1119580 ⤷  Get Started Free
Denmark 1807156 ⤷  Get Started Free
Denmark 2340872 ⤷  Get Started Free
European Patent Office 1807156 ⤷  Get Started Free
European Patent Office 2340872 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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