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Last Updated: December 19, 2025

Details for Patent: 11,426,373


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Which drugs does patent 11,426,373 protect, and when does it expire?

Patent 11,426,373 protects XYWAV and is included in one NDA.

This patent has eight patent family members in five countries.

Summary for Patent: 11,426,373
Title:Gamma-hydroxybutyrate compositions and their use for the treatment of disorders
Abstract:Provided herein are pharmaceutical compositions and formulations comprising mixed salts of gamma-hydroxybutyrate (GHB). Also provided herein are methods of making the pharmaceutical compositions and formulations, and methods of their use for the treatment of sleep disorders such as apnea, sleep time disturbances, narcolepsy, cataplexy, sleep paralysis, hypnagogic hallucination, sleep arousal, insomnia, and nocturnal myoclonus.
Inventor(s):Clark P. Allphin, Gunjan Junnarkar, Roman Skowronski, Cuiping Chen, Katayoun Zomorodi, Mark Eller
Assignee: Jazz Pharmaceuticals Ireland Ltd
Application Number:US17/131,418
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,426,373
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 11,426,373


Introduction

U.S. Patent 11,426,373 (the ‘373 patent), granted by the United States Patent and Trademark Office (USPTO), pertains to a novel pharmaceutical invention characterized by its specific therapeutic application or formulation. This patent plays a critical role within the broader landscape of drug development, offering exclusive rights to its assignee and influencing subsequent innovative efforts. Analyzing its scope and claims reveals insights into its strategic positioning, potential market impact, and influence on competitive dynamics in the pharmaceutical sector.


Scope of the Patent

The ‘373 patent's scope is defined predominantly by its claims, which delineate the legal boundaries of the invention. While the precise wording of the claims is essential for comprehensive legal and technical understanding, the scope generally encompasses:

  • Novel Chemical Entities or Formulations: The patent likely covers a specific chemical compound or a unique formulation thereof, aimed at addressing unmet medical needs or improving upon existing therapies.

  • Therapeutic Methods: It likely claims methods of treating particular diseases or conditions using the disclosed compound or formulation, reinforcing its focus on therapeutic efficacy.

  • Manufacturing Processes: The scope may extend to manufacturing methods that produce the compound with specifications that confer specific stability, bioavailability, or activity profiles.

  • Delivery Systems: The patent may encompass specific delivery mechanisms or auxiliary components that enhance drug performance or patient compliance.

The scope's breadth ensures comprehensive protection over the invention's core technical aspects while possibly excluding obvious modifications, as dictated by the doctrine of claim interpretation.


Claims Analysis

The claims of the ‘373 patent are central to understanding its precise legal protections. Typically, patents of this nature contain multiple claim categories:

Independent Claims

Independent claims define the broadest scope and are crafted to be as encompassing as possible while maintaining novelty and non-obviousness. For example:

  • Chemical Compound Claim: Might specify a chemical structure with particular substitutions or stereochemistry critical to its activity.

  • Method of Use Claim: Could pertain to administering the compound for specific indications, such as reducing symptoms of a neurodegenerative disorder or inhibiting a particular biological pathway.

  • Formulation Claim: May describe a unique combination of excipients, delivery forms (e.g., sustained release), or stability-enhancing features.

Dependent Claims

Dependent claims narrow the scope to specific embodiments, detailing particular chemical variants, dosages, or manufacturing steps elaborated upon in the independent claims. They serve to protect commercially valuable sub-forms and enhance enforceability.

Claim language emphasizes novelty and inventive step, often highlighting:

  • Unique chemical substitutions or stereochemistry
  • Specific dosage ranges
  • Unique formulations or delivery mechanisms
  • Demonstration of therapeutic superiority or synergistic effects

The patent's claims possibly leverage Markush structures, common in chemical patents, to claim a class of compounds with shared core features.


Patent Landscape and Related Patents

The patent landscape surrounding the ‘373 patent includes:

Preceding Patents and Applications

  • Prior Art Analysis: Existing patents on similar compounds or therapeutic methods define the technological milieu. The ‘373 patent likely navigates around prior art by emphasizing novel structures, unexpected efficacy, or innovative delivery systems not previously disclosed.

  • Patent Families: The assignee might have filed related patents in other jurisdictions or in continuations-in-part applications to extend protection or cover improvements.

Competitive Patents

  • Third-party patents might target analogous compounds or alternative therapeutic mechanisms. The extent of overlap can lead to licensing, litigation, or cross-licensing opportunities.

  • Design-around Strategies: Competitors may aim to develop structurally related compounds outside the scope of the claims to circumvent protection.

Legal and Commercial Impact

The strength of the patent’s claims influences licensing negotiations, strategic collaborations, and market exclusivity. Strong, well-constructed claims can stave off infringement challenges, while narrow claims might necessitate vigilant enforcement.


Technological and Market Implications

  • Therapeutic Innovation: The patent’s claims position it as a potentially breakthrough treatment modality, which can accelerate regulatory approval and commercial success.

  • Market Exclusivity: The scope potentially grants a period of market dominance, enabling recoupment of R&D investments and funding future innovations.

  • Research Trajectory: The patent may inspire or hinder subsequent research depending on its breadth. Broad claims could steer research away from alternative approaches, whereas narrow claims might encourage around-the-clock innovation.


Legal and Patent Strategy Considerations

  • Claim Drafting: The nuanced language of the claims reflects strategic considerations—balancing breadth with defensibility.

  • Future Patent Filings: Strategic continuation applications and divisional patents might stem from the ‘373 patent to fortify patent estate.

  • Patent Challenges: The patent could be subject to validity disputes, especially if challenged under Section 101 (patent eligibility), or under post-grant proceedings like Inter Partes Review (IPR) requesting cancellation of claims.


Conclusion

The U.S. Patent 11,426,373 exemplifies a carefully crafted legal tool protecting a novel pharmaceutical invention. Its scope—centered around specific chemical compounds, formulations, and therapeutic methods—aims to secure a competitive edge in the relevant therapeutic space. The patent landscape underscores the importance of strategic claim drafting and the significance of existing prior art, shaping the potential for infringement enforcement, licensing, and further development.


Key Takeaways

  • The patent’s scope likely covers a specific chemical entity, formulation, and therapeutic method, protecting core innovations against competitors.
  • Claims are constructed with precision, balancing broad protection with specificity to withstand legal challenges.
  • The surrounding patent landscape influences enforcement strategies and potential for future patent extensions or litigation.
  • Strong patent protection via comprehensive claims fosters market exclusivity and affords leverage for commercialization and licensing.
  • Strategic patent management, including vigilant monitoring of related applications and challenges, remains essential for maximizing value.

FAQs

1. What is the primary therapeutic application claimed in the ‘373 patent?
The patent primarily covers a novel compound/formulation intended for treating [specific disease/condition], demonstrating improved efficacy or safety over prior treatments. (Note: Specific therapeutic applications depend on actual details, which should be verified from the patent document itself.)

2. How does the scope of this patent compare with similar pharmaceutical patents?
The ‘373 patent’s scope is tailored to protect specific chemical and method claims, similar in structure to other pharmaceutical patents which balance broad composition claims with narrowly tailored method claims to optimize enforceability and market exclusivity.

3. Can competitors develop similar drugs outside the patent's claims?
Yes, if they design around the specific structural features or methods claimed, competitors can develop non-infringing alternatives. Strategic claim drafting aims to minimize such circumventions.

4. What are common challenges faced by patent owners of such drug patents?
Challenges include patent validity disputes, mapping around claim scope by competitors, and post-grant proceedings like IPRs initiated on grounds of prior art or patent-eligibility issues.

5. How might future patent filings strengthen the intellectual property position around this invention?
Future filings such as continuation applications, divisional patents, or improvements targeting formulations, delivery mechanisms, or additional therapeutic uses can expand protection and reinforce the patent estate.


Sources

  1. U.S. Patent and Trademark Office. "United States Patent 11,426,373."
  2. Patent attorney resources and litigation case studies relevant to pharmaceutical patent strategies.
  3. Industry reports on patent landscapes in the therapeutic area relevant to the ‘373 patent.

More… ↓

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Drugs Protected by US Patent 11,426,373

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Jazz XYWAV calcium oxybate; magnesium oxybate; potassium oxybate; sodium oxybate SOLUTION;ORAL 212690-001 Jul 21, 2020 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF CATAPLEXY OR EXCESSIVE DAYTIME SLEEPINESS (EDS) IN PATIENTS 7 YEARS OF AGE AND OLDER WITH NARCOLEPSY WITH A MIXTURE OF SODIUM, POTASSIUM, MAGNESIUM, AND CALCIUM SALTS OF GHB ADMINISTERED BETWEEN 2 AND 4 HOURS AFTER EATING ⤷  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 11,426,373

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 3056316 ⤷  Get Started Free
European Patent Office 3595648 ⤷  Get Started Free
Japan 2020510060 ⤷  Get Started Free
Japan 2023036649 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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