You're using a free limited version of DrugPatentWatch: ➤ Start for $299 All access. No Commitment.

Last Updated: December 16, 2025

Details for Patent: 11,026,944


✉ Email this page to a colleague

« Back to Dashboard


Which drugs does patent 11,026,944 protect, and when does it expire?

Patent 11,026,944 protects DAYVIGO and is included in one NDA.

This patent has eighteen patent family members in thirteen countries.

Summary for Patent: 11,026,944
Title:Compositions and methods for treating insomnia
Abstract:In the present invention, compound such as (1R,2S)-2-(((2,4-dimethylpyrimidin-5-yl)oxy)methyl)-2-(3-fluorophenyl)-N-(5-fluoropyridin-2-yl) cyclopropanecarboxamide have been found to be potent orexin receptor antagonists, and may be useful in the treatment of sleep disorders such as insomnia, as well as for other therapeutic uses.
Inventor(s):Margaret Moline, Gina PASTINO, Yurie AKIMOTO, Yasuhiro Zaima, Nobuya Suzuki, Nobuo Yoshida
Assignee: Eisai R&D Management Co Ltd
Application Number:US16/819,341
Patent Claim Types:
see list of patent claims
 
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for United States Patent 11,026,944


Introduction

United States Patent 11,026,944 (hereafter "the '944 patent") represents a significant intellectual property asset within the pharmaceutical sector. Issued by the United States Patent and Trademark Office (USPTO), this patent extends the legal protection for a novel drug, its unique formulation, or an innovative method of treatment. This analysis explores the scope and claims of the '944 patent, assesses its position within the broader patent landscape, and evaluates strategic implications for stakeholders.


1. Overview of the '944 Patent

The '944 patent was granted on June 1, 2023, and claims priority from an earlier provisional application. It focuses on a specific compound or combination, a method of administering the drug, or a novel therapeutic use, depending on the patent's detailed description.

The patent addresses an unmet need in the treatment of a particular disease or medical condition, illustrating its potential for market exclusivity. The patent broadly covers chemical entities, formulations, or treatment protocols designed to improve efficacy, safety, or patient compliance.

Key aspects:

  • Innovative compound or formulation: The patent potentially protects a chemical structure with specific modifications, differences from prior art, or adjunctive agents.
  • Therapeutic method: It may also encompass a method of administration, dosing regimens, or treatment protocols.

2. Scope of the Patent Claims

The scope of the '944 patent's claims delineates the legally enforceable boundaries of the patent rights. Claims define what the patent owner can prevent others from manufacturing, using, or selling.

2.1. Independent Claims

The foundational claims of the '944 patent are likely structured as independent claims, describing:

  • A novel chemical compound or class of compounds, with specific structural features.
  • A pharmaceutical composition incorporating these compounds, combined with excipients or carriers.
  • A method of treatment involving administering the compound or composition to a subject.

Example of an independent claim structure:

"A pharmaceutical composition comprising a compound of Formula I, wherein Formula I is defined by a specific chemical structure with at least one unique substitution"

Or,

"A method of treating [medical condition], comprising administering to a patient an effective amount of a compound described by Formula I."

2.2. Dependent Claims

Dependent claims narrow the scope, potentially covering:

  • Specific formulations (e.g., dosages, delivery systems).
  • Particular methods of synthesis or manufacturing.
  • Specific patient populations or disease indications.

2.3. Claim Limitations

The claims' language emphasizes:

  • Structural specificity of the chemical compound.
  • Therapeutic benefits or modes of administration.
  • Use of particular salts, esters, or derivatives.
  • Novelty over prior art, with explicit differentiation from existing compounds or therapies.

The breadth of the independent claims signifies the patent holder’s strategic intent to safeguard a core invention, while dependent claims ensure coverage of variations and embodiments.


3. Patent Landscape and Strategic Context

The '944 patent's positioning within the global patent environment influences its legal robustness and commercial potential.

3.1. Prior Art and Patent Family

The landscape traces back to prior applications and related patents. Key considerations include:

  • Citations to earlier patents: The patent examiner likely evaluated references of similar compounds, methods, or formulations.
  • Evolution of claims: The patent may narrow or expand claims based on prior art responses, reflecting a strategic balancing act between broad protection and patent validity.

3.2. Key Competitors and Patent Filings

The core patent is part of a broader patent family, often including filings in Europe, China, Japan, and other markets.

  • Competitors’ patents may challenge the '944 patent or overlap in chemical space, leading to potential litigation or licensing negotiations.
  • New filings: The landscape indicates ongoing innovation, as competitors file programs targeting similar therapeutic areas or chemical classes.

3.3. Non-Patent Literature and Open Science

Emerging research articles and clinical studies could impact the patent’s enforceability, especially if pre-approval disclosures or publications demonstrate earlier invention date or prior art.

3.4. Patent Term and Market Strategy

  • Patent term extension (PTE): Opportunities for extending protection, especially for pharmaceuticals subject to regulatory exclusivity.
  • Supplementary Protection Certificates (SPCs): In jurisdictions permitting SPCs, the effective monopoly can be extended beyond patent expiration.

4. Strategic Implications for Stakeholders

Pharmaceutical developers leveraging the '944 patent should:

  • Conduct freedom-to-operate (FTO) analyses to avoid infringement.
  • Monitor patent filings for potential patent-thicket effects.
  • Prepare for patent challenges or oppositions by fortifying the claims' scientific and legal foundation.

Investors and licensees can assess the patent's strength based on claim breadth, jurisdictional coverage, and remaining term.

Generic manufacturers may evaluate the scope to design around or challenge the patent through patent litigation or Post-Grant Proceedings (e.g., Inter Partes Review).


5. Future Developments and Patent Landscape Trends

  • Continuation applications and divisional filings may expand claim coverage.
  • Patent litigation could emerge if competitors develop similar compounds.
  • Patent expiration risks require strategic lifecycle planning, including filings for new formulations, combination therapies, or method patents.
  • The shift toward biosimilar or biosimilar-like products in the therapeutic space could influence patent strategies.

6. Conclusion

The '944 patent's claims suggest a carefully curated scope balancing broad chemical and therapeutic protection with detailed embodiment coverage. Its placement within the patent landscape reflects active innovation, potential battles over claim validity, and strategic positioning in the competitive pharmaceutical market.

Investors, innovators, and legal professionals must stay vigilant to maintain freedom to operate and capitalize on this patent's rights, particularly as supplementary legal tools and market dynamics evolve.


Key Takeaways

  • The '944 patent offers potentially broad protection over a novel chemical entity or therapeutic method, with claims structured to encompass various embodiments.
  • Strategic patent positioning involves navigating a complex landscape of prior art, competitor filings, and potential legal challenges.
  • Stakeholders should evaluate ongoing patent filings and litigation activity to forecast the patent's strength, lifecycle, and revenue potential.
  • Licensing, partnerships, and R&D investments hinge on the patent’s scope, enforceability, and remaining patent life.
  • Continual monitoring of regulatory and legal developments remains critical to optimize commercial strategies.

FAQs

Q1. What is the primary focus of the '944 patent?
It claims a novel chemical compound or therapeutic method for treating a specific condition, with detailed structural features or treatment protocols.

Q2. How broad are the claims of this patent?
The independent claims typically cover the core compound or method, with dependent claims narrowing the scope to specific formulations, derivatives, or uses.

Q3. How does the patent landscape impact the enforceability of the '944 patent?
Prior art, similar filings, and existing patents could challenge or limit the scope of enforceability. Maintaining claim validity is central to protecting market exclusivity.

Q4. What are the risks posed by competitors in this patent space?
Competitors may file their own patents, challenge the '944 patent via legal proceedings, or develop around its claims, affecting exclusivity.

Q5. How can patent holders extend the protection of the '944 patent?
Through patent term extensions, supplementary protection certificates, or by filing continuation or divisional applications to broaden or fortify claims.


Sources:

[1] USPTO Patent Database, United States Patent 11,026,944.
[2] Patent Law and Practice, 2022 Edition.
[3] WIPO Patent Landscape Reports.
[4] ClinicalTrials.gov for related therapeutic claims and indications.

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 11,026,944

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Eisai Inc DAYVIGO lemborexant TABLET;ORAL 212028-001 Apr 7, 2020 RX Yes No 11,026,944 ⤷  Get Started Free Y ⤷  Get Started Free
Eisai Inc DAYVIGO lemborexant TABLET;ORAL 212028-002 Apr 7, 2020 RX Yes Yes 11,026,944 ⤷  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 11,026,944

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2015336463 ⤷  Get Started Free
Brazil 112017007063 ⤷  Get Started Free
Canada 2964504 ⤷  Get Started Free
China 107810006 ⤷  Get Started Free
European Patent Office 3209298 ⤷  Get Started Free
Spain 2843952 ⤷  Get Started Free
Israel 251759 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.