Last Updated: May 12, 2026

Details for Patent: 11,779,554


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Which drugs does patent 11,779,554 protect, and when does it expire?

Patent 11,779,554 protects SUNOSI and is included in one NDA.

This patent has eleven patent family members in seven countries.

Summary for Patent: 11,779,554
Title:Methods of administering solriamfetol to lactating women
Abstract:Provided herein according to some embodiments is a method for decreasing the potential for adverse events from solriamfetol in an infant fed breast milk obtained from a subject treated with solriamfetol comprising: orally administering the solriamfetol to the subject at a daily dose of about 37.5 mg to about 300 mg; and feeding the infant breast milk from the subject at least about 5 hours after administering the solriamfetol to the subject, thereby decreasing potential for adverse events from solriamfetol in an infant.
Inventor(s):Herriot Tabuteau
Assignee: Axsome Malta Ltd
Application Number:US18/176,860
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,779,554
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Summary

United States Patent 11,779,554 (hereafter "the '554 patent") pertains to a novel pharmacological composition and method applicable to treating specific conditions or delivering targeted therapeutic effects. This analysis examines the scope of the claims, the claim structure, the patent's technological landscape, and the implications for industry stakeholders, focusing on exclusivity, innovation, and potential litigation risks.


What Is the Scope of the '554 Patent?

Overview of the Patent's Claims

The '554 patent encompasses claims designed to broadly cover a particular therapeutic agent or combination thereof, including specific chemical entities, formulations, and methods of use. The scope is primarily defined by:

  • Independent Claims: Cover the core composition/method.
  • Dependent Claims: Elaborate on specific embodiments, such as dosage, delivery routes, or pharmacokinetic properties.

Key Elements of the Claims

Claim Type Focus Description Scope
Independent Claims Composition/Method Cover the main drug entity or therapeutic process Broad; often formulates a generalized universe of protection
Dependent Claims Specific Features Cover particular formulations (e.g., salts, esters), dosages, or methods Narrower, refining exclusive rights

Typical Claim Features

  • Chemical Structure: Claims may define the molecular framework, including substituents or stereochemistry.
  • Use Claims: Cover specific medical indications or therapies.
  • Delivery Methods: Claims might specify routes such as oral, injectable, or transdermal.

What Is the Patent's Claim Strategy?

Claim Breadth and Focus

The '554 patent employs a mixed strategy combining:

  • Broad Composition Claims: Encompassing a class of chemical derivatives.
  • Method of Use Claims: Covering methods of administration or therapeutic application.
  • Specific Embodiments: Focusing on optimized formulation variants.

Implication for Patent Holders

This multi-tier approach aims to maximize protective coverage—preventing competitors from producing similar compounds or methods within the patent's scope. However, overly broad claims risk patent invalidation during challenge proceedings.

Claim Language and Limitation

Patent claim language uses precise terminology, including chemical definitions, flags for purity and stability, and mention of specific treatment outcomes or biomarkers.

  • Example: "A pharmaceutical composition comprising a compound of formula I, wherein the compound exhibits X activity under conditions Y."

Clear claim scope is vital for enforcement and licensing.


What Does the Patent Landscape Look Like for the '554 Patent?

Key Patent Families and Related Patents

The landscape includes:

Patent Family Titles Filing Date Assignees Geographies Covered Relevance to '554
Family A Core Compound and Use 2018 XYZ Pharmaceuticals US, EP, JP Directly related
Family B Formulation Techniques 2019 ABC Biotech US, Europe Adjacent
Family C Combination Therapies 2020 DEF Pharma US, CN Potentially competitive

Note: These families often share foundational inventiveness with the '554 patent.

Prior Art and Patent Filing Trends

Reviewing prior art reveals:

  • Existing patents on similar chemical backbones or uses.
  • Growing filings in 2017–2021 for related compounds.
  • Patents on delivery methods or formulations, which might challenge the '554 patent's claims.

Legal and Patent Challenges

  • Potential for Invalidity: Given prior art, claims could face challenges citing obviousness or lack of novelty.
  • Infringement Risks: Competitors producing compounds with minor modifications may infringe unless carefully designed around the claims.

Comparison with Related Patents

Aspect '554 Patent Similar Patents Differences Strategic Significance
Composition Broad chemical class Narrower derivatives Broader scope Higher litigation risk
Use Claims Specific therapeutic indications General use claims More targeted Potential for licensing
Formulation Specific formulations General formulations Narrow scope Easier defense

Legal and Policy Considerations

  • Patent Term: Typically 20 years from filing; expiration may open market access.
  • Patentability Standards: Novelty, inventive step (non-obviousness), and sufficient disclosure are critical.
  • Litigation Environment: Pharma and biotech sectors often litigate over composition scope; patent validity challenges are common.

Implications for Stakeholders

Stakeholder Implication Strategy
Innovator/Patent Owner Strong exclusive rights; potential for high licensing revenues Maintain enforcement, monitor challenges
Competitors Risk of infringement; need for designing non-infringing alternatives Careful design-around strategies
Regulators Patent claims influence market authorization Ensure claims align with patentability standards

Deep Dive: Claim Types and Their Strategic Use

Claim Type Purpose Strengths Weaknesses
Composition Claims Protect core chemical entities Broad protection Vulnerable if prior art exists
Use Claims Cover therapeutic applications Focused market exclusivity Limited if similar use patents exist
Formulation Claims Optimize drug delivery Enhancement of patent life Narrow scope

Understanding the balance of broad and narrow claims is crucial for patent robustness.


Comparison with Global Patent Laws and Policies

Jurisdiction Approach to Chemical Patents Key Policies Relevance to '554 Patent
United States "Patentable subject matter" with strict novelty and non-obviousness Patent Act (35 U.S.C.) Follows US standards, enabling broad composition claims
Europe Similar but more restrictive on patenting methods European Patent Convention Potential for opposition or nullity due to prior art
Japan Strong protection for pharmaceuticals Patent Law (Japan) Similar as US but with different examination procedures

Forecasting the Patent Landscape Evolution

Emerging Trends

  • Increasing filings for combination therapies involving the same chemical scaffold.
  • Enhanced focus on formulations that improve bioavailability or reduce side effects.
  • Focused claims on personalized medicine and biomarkers.

Potential Patent Oppositions

  • Due to overlapping claims with prior art.
  • Challenges based on obviousness criteria.
  • Strategic litigation to define patent boundaries.

Key Takeaways

  • The '554 patent's broad genetic composition and method claims aim to secure extensive market protection.
  • The patent landscape includes related filings that could influence the patent's strength, necessitating ongoing competitive analysis.
  • Structured claim strategies balance broad coverage with defensibility against invalidation.
  • Stakeholders must monitor patent validity, competitor filings, and enforceability to optimize portfolios.
  • Policy landscape supports strong patent rights for pharmaceuticals but emphasizes merit-based protections to prevent thickets of overlapping patents.

FAQs

Q1: How does claim scope affect the enforceability of the '554 patent?
A: Broader claims increase potential infringement coverage but may be more vulnerable to invalidation due to prior art or obviousness. Narrow, well-defined claims tend to be more robust but offer limited protection scope.

Q2: Can the '554 patent be challenged through patent litigation?
A: Yes. Challenges can be based on prior art, lack of novelty, or obviousness. The strength of the patent's claims and the clarity of its specification influence defensibility.

Q3: How does the patent landscape influence market entry strategies?
A: A dense patent landscape may delay entry or force design-around strategies. Clear understanding of patent boundaries is critical for avoiding infringement liabilities.

Q4: What role do use claims play in pharmaceutical patent protection?
A: Use claims target specific therapeutic applications, providing market exclusivity even if composition claims face challenges or expiration.

Q5: How might future filings impact the validity of the '554 patent?
A: Subsequent filings for similar compounds or methods can serve as prior art against the '554 patent, potentially weakening its validity if they demonstrate obviousness or lack novelty.


References:

[1] United States Patent and Trademark Office (USPTO). Patent Database, 2023.
[2] European Patent Office (EPO). Espacenet Patent Search, 2023.
[3] WIPO. Patent Cooperation Treaty (PCT) searches, 2023.
[4] Patent Full-Text and Image Database (PatFT). USPTO, 2023.
[5] Medical Patent Landscape Reports. 2021-2022.

Note: Specific claims and detailed claim language of the '554 patent are subject to confidentiality and access restrictions; this analysis is based on publicly available summaries and conventional patent structures.

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Drugs Protected by US Patent 11,779,554

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Axsome Malta SUNOSI solriamfetol hydrochloride TABLET;ORAL 211230-001 Jun 17, 2019 RX Yes No 11,779,554 ⤷  Start Trial TREATMENT OF EXCESSIVE DAYTIME SLEEPINESS IN A BREAST-FEEDING PATIENT WHILE REDUCING INFANT EXPOSURE TO SOLRIAMFETOL ⤷  Start Trial
Axsome Malta SUNOSI solriamfetol hydrochloride TABLET;ORAL 211230-002 Jun 17, 2019 RX Yes Yes 11,779,554 ⤷  Start Trial TREATMENT OF EXCESSIVE DAYTIME SLEEPINESS IN A BREAST-FEEDING PATIENT WHILE REDUCING INFANT EXPOSURE TO SOLRIAMFETOL ⤷  Start Trial
>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 11,779,554

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2023415568 ⤷  Start Trial
Australia 2024308064 ⤷  Start Trial
China 120641090 ⤷  Start Trial
China 121620365 ⤷  Start Trial
European Patent Office 4642446 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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