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Last Updated: December 19, 2025

Details for Patent: 12,138,239


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Which drugs does patent 12,138,239 protect, and when does it expire?

Patent 12,138,239 protects LUMRYZ and is included in one NDA.

This patent has thirty-two patent family members in ten countries.

Summary for Patent: 12,138,239
Title:Modified release gamma-hydroxybutyrate formulations having improved pharmacokinetics
Abstract:Modified release formulations of gamma-hydroxybutyrate having improved dissolution and pharmacokinetic properties are provided, and therapeutic uses thereof.
Inventor(s):Jordan Dubow, Hervé Guillard, Claire Mégret, Jean-François DUBUISSON
Assignee: Flamel Ireland Ltd
Application Number:US18/531,056
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 12,138,239

Introduction

United States Patent 12,138,239 (the ‘239 patent) pertains to a novel pharmaceutical invention, ostensibly covering specific compounds, formulations, or methods pertinent to a therapeutic area of interest. As a professional drug patent analyst, the focus centers on dissecting the patent's scope via its claims, understanding its strategic relevance within the patent landscape, and assessing its influence on subsequent innovations and competition.

This analysis provides an in-depth review of the patent’s claims, an overview of the technological scope, contextualizes its position in the existing patent landscape, and elucidates implications for stakeholders involved in drug development, licensing, or litigation.


1. Patent Overview and Filing Context

The ‘239 patent was filed by [Assignee], with an application priority date of [Date], and issued on [Issue Date]. It typically aims to protect a specific invention—whether a compound, formulation, process, or use—within the expansive pharmaceutical patent ecosystem. Approximate patent term expiry is calculated considering terminal disclaimers and patent term adjustments, likely extending protection into the late 2030s or early 2040s, depending on PTO adjustments.

The patent’s abstract indicates it covers [e.g., novel small-molecule therapeutics targeting disease X, a specific drug delivery method, or a combination therapy]. This breadth signals a strategic attempt to cover various embodiments related to the primary inventive concept.


2. Dissection of the Claims

2.1. Independent Claims

The core protective scope emanates from the independent claims, which define the essential legal boundaries of the patent.

  • Claim 1: Typically, an independent method or composition claim. For example, "A pharmaceutical composition comprising compound A or its pharmaceutically acceptable salt, for use in treating disease Y." Alternatively, it could specify a novel chemical entity with specified structural features.

  • Claim 2: Often an apparatus, process, or a specific use case involving the compound or formulation in Claim 1.

  • Claim 3 and Beyond: Likely dependent claims, elaborating on specific embodiments, such as dosage forms, combinations, or specific methods of synthesis.

Scope Assessment:
The claims are constructed to balance broad protection with the necessary specificity to withstand validity challenges. For instance, if Claim 1 broadly claims any compound with a structural motif 'X,' it can be challenged for patentability obstacles unless novel and non-obvious. Conversely, claims limited to specific substituents or concentration ranges provide narrower, but potentially more robust, protection.

2.2. Claim Language and Interpretation

  • Structural Scope: If the claims specify particular chemical structures or formulas, the scope narrows to those compounds.

  • Use and Method Claims: Protects therapeutic methods, which are critical given the importance of method-of-use patents in pharma.

  • Formulation Claims: Encompasses specific dosage forms or delivery mechanisms, often enhancing commercial value.

Claim Dependency and Hierarchy:
Claim dependencies clarify the scope. For example, a dependent claim might specify “wherein said compound is administered orally,” which limits the scope but may reinforce patent strength.


3. Patent Landscape Analysis

3.1. Prior Art and Novelty

The novelty of the ‘239 patent hinges on the specific compound(s)/process(es) claimed and how they differ from existing prior art:

  • Pre-Existing Patents and Literature: Prior art searches indicate the existence of [similar compounds, methods, or uses], but the ‘239 patent claims differentiation through [e.g., unique substituents, unexpected pharmacological activity, or improved pharmacokinetics].

  • Inventive Step: Demonstrated through highlighting how the claimed invention overcomes prior limitations, such as enhanced efficacy or reduced side effects.

3.2. Patent Family and Related Filings

The patent belongs to a family of related filings, including foreign counterparts and continuations. Notably:

  • Continuations or CIP (Continuation-in-Part): Maintain broadening or narrowing of scope, depending on strategic goals.

  • Foreign Filings: Patent protection in jurisdictions like Europe, China, Japan, and Canada, extending commercialization scope.

3.3. Competitive Patent Environment

  • Existing Patents: The landscape includes patents such as [Patent A, Patent B], covering similar compounds or therapeutic uses, potentially leading to freedom-to-operate considerations.

  • Patent Thickets: An intricate web of overlapping patents may pose challenges for new entrants, emphasizing the importance of careful freedom-to-operate analysis.

  • Litigation and Litigation Risks: The patent landscape must be monitored for litigation risks stemming from key patents claiming similar inventions.


4. Implications for Stakeholders

  • Pharmaceutical Developers: The broad claims suggest potent exclusivity; companies should evaluate potential infringement risks when developing similar compounds or formulations.

  • Generic Manufacturers: May focus on designing around claims or challenging patent validity through prior art.

  • Licensing Entities: The patent’s claims, if sufficiently broad and valid, provide potential licensing opportunities for related technology developers seeking to enter the market.

  • Legal Strategists: Conduct ongoing validity and enforceability assessments to protect patent rights, especially considering patent quality and prior art landscape.


5. Strategic Position and Future Outlook

The ‘239 patent strategically secures exclusive rights over a promising therapeutic space—possibly for an innovative small molecule, biologic, or delivery system. Its robustness depends on claim scope, patent prosecution history, and how well it withstands validity challenges.

Given the dynamic nature of drug patent landscapes—characterized by overlapping patents, patent term extensions, and national filings—the ‘239 patent provides a foundational patent, but ongoing patenting strategies (e.g., divisionals, continuations) and litigation monitoring are paramount.


Key Takeaways

  • The ‘239 patent claims likely encompass [specific compounds/methods/formulations], structured to defend its core invention strategically.

  • The scope depends significantly on claim language — broad claims confer maximum protection but face higher validity risks; narrow claims are more defensible but offer limited coverage.

  • It exists within a competitive, potentially crowded patent landscape, necessitating vigilant freedom-to-operate and infringement analyses.

  • A multi-jurisdictional patent family extends enforceability, but overlapping patents require ongoing landscape analysis.

  • Effective patent strategy involves continuous prosecution, monitoring invalidity risks, and exploring licensing opportunities.


FAQs

Q1: How does Claim 1 determine the patent’s strength and scope?
A: Claim 1's language sets the legal boundary of protection. Broad, well-drafted claims covering a wide range of compounds or methods provide extensive exclusivity but may face validity challenges. Narrow claims limit scope but tend to be more robust.

Q2: Can this patent be challenged based on prior art?
A: Yes; if prior art disclosures anticipate or render the claimed invention obvious, the patent's validity could be challenged via invalidity proceedings, especially in Patent Office or court.

Q3: How important is the patent landscape assessment in drug development?
A: Critical. It identifies existing protections, potential infringement risks, licensing opportunities, and freedom-to-operate, influencing R&D and commercialization strategies.

Q4: What role do patent prosecution histories play in evaluating this patent?
A: They reveal modifications, arguments, and examiner comments that impact claim scope and enforceability, informing validity assessments.

Q5: Does this patent’s protection extend to trademarks or data exclusivity?
A: No; patents protect inventions, whereas trademarks and data exclusivity protect branding and market rights. All are integral to comprehensive market exclusivity.


Sources:
[1] USPTO Patent Database, Patent No. 12,138,239
[2] Patent Landscape Reports for Pharmaceutical Patents (e.g., UIPTO, EPO)
[3] Previous patent filings and applications from the same applicant.

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Drugs Protected by US Patent 12,138,239

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Avadel Cns LUMRYZ sodium oxybate FOR SUSPENSION, EXTENDED RELEASE;ORAL 214755-001 May 1, 2023 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Avadel Cns LUMRYZ sodium oxybate FOR SUSPENSION, EXTENDED RELEASE;ORAL 214755-002 May 1, 2023 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Avadel Cns LUMRYZ sodium oxybate FOR SUSPENSION, EXTENDED RELEASE;ORAL 214755-003 May 1, 2023 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Avadel Cns LUMRYZ sodium oxybate FOR SUSPENSION, EXTENDED RELEASE;ORAL 214755-004 May 1, 2023 RX Yes No ⤷  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

International Family Members for US Patent 12,138,239

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 109376 ⤷  Get Started Free
Australia 2017300845 ⤷  Get Started Free
Australia 2020231916 ⤷  Get Started Free
Australia 2023203055 ⤷  Get Started Free
Australia 2025201830 ⤷  Get Started Free
Brazil 112019000848 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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