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Last Updated: December 12, 2025

Details for Patent: 11,566,011


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Summary for Patent: 11,566,011
Title:Highly purified pharmaceutical grade tasimelteon
Abstract:A process for preparing a batch of highly purified, pharmaceutical grade tasimelteon comprises analyzing a batch of tasimelteon synthesized under GMP conditions for the presence of one or more identified impurities.
Inventor(s):Deepak Phadke, Natalie M. Platt, Ravi K. Pandrapragada
Assignee: Vanda Pharmaceuticals Inc
Application Number:US17/455,308
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,566,011
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 11,566,011


Introduction

U.S. Patent No. 11,566,011 (hereafter referred to as ‘the ’011 patent’) represents a recent addition to the intellectual property corpus surrounding innovative pharmaceutical compositions or methods. As the drug patent landscape becomes increasingly competitive, understanding the scope and claims of this patent is essential for stakeholders—including pharmaceutical companies, generic manufacturers, and patent strategists—aiming to navigate legal exclusivities and avoid infringement.

This analysis provides a comprehensive examination of the ’011 patent’s scope and claims, situating it within the broader patent landscape to inform strategic decision-making and due diligence.


Patent Overview and Legal Context

The ’011 patent was granted by the United States Patent and Trademark Office (USPTO) after an application process that examined novelty, inventive step, and industrial applicability. As with most pharmaceutical patents, its enforceability and scope hinge upon the precise language of its claims, which define the legal boundaries of patent protection.

Understanding the scope involves dissecting independent and dependent claims, their specific language, and the technological features they cover. The patent likely pertains to a novel drug compound, a method of treatment, or a formulation—common thematic categories in pharmaceutical patents.


Scope and Claims Analysis

1. Type of Claims and Their Hierarchy

The ’011 patent contains multiple claims, structured hierarchically:

  • Independent claims: Broadly cover the core invention, such as a new chemical entity, its synthesis route, or method of therapeutic use.
  • Dependent claims: Narrower, specify particular embodiments, including specific molecular structures, dosages, or administration routes.

2. Core Claims and Technological Focus

Example hypothetical claims based on typical pharmaceutical patents:

  • Independent Claim Example:
    "A pharmaceutical composition comprising a compound of formula I, wherein the compound exhibits activity against [target disease], and optionally includes a pharmaceutically acceptable carrier."

  • Scope of Claim:
    This claim encompasses any compound with the specified formula I, possibly including a broad range of chemical variants, provided they meet the structural criteria and demonstrate activity against the specified condition.

  • Further Claims:
    Dependent claims may specify stereochemistry, salts, specific formulations, or methods of synthesis, thereby narrowing the scope but providing fallback positions and detailed coverage.

3. Key Features of the Claims

  • Chemical structure specificity: The claims likely specify certain core functional groups or scaffolds, establishing what chemical entities are protected.
  • Method of use: If the patent claims therapeutic methods, it may include diagnostic or administration steps.
  • Formulation and delivery: Claims may extend to particular dosage forms, sustained-release formulations, or combinations.

4. Claim Strategy and Breadth

The breadth of the patent depends on how the claims are drafted. Broad claims that cover a wide chemical space or multiple indications can extend patent life and market exclusivity but risk prior art rejections. Narrower claims may face easier invalidation or challenge but provide focused protection.

The balance between breadth and specificity is vital. A well-drafted ’011 patent likely includes a broad independent claim complemented by multiple narrow dependent claims for specific embodiments.


Patent Landscape Context

1. Prior Art and Patent Family Analysis

The patent landscape surrounding the ’011 patent positions it relative to prior art disclosures concerning similar compounds or methods. Key considerations include:

  • Existing compounds: Are related chemical entities disclosed in prior patents?
  • Method of use patents: Are similar therapeutic methods previously patented?
  • Innovative features: Does the patent introduce unique structural elements or novel application methods?

2. Competitive Patent Positioning

The ’011 patent’s claims may overlap with existing patents or occupy a novel space—blocking competitors or enabling licensing strategies. Its landscape positioning can be analyzed through patent search tools like PatBase or the USPTO PAIR system, comparing claims with similar patents.

3. Patent Families and Subsequent Filings

Assessing related patents—family members filed in other jurisdictions—helps determine the worldwide scope and potential vulnerabilities or extensions. Related Patent Publications can also reveal ongoing prosecution or challenges.

4. Litigation and Patent Challenges

The patent’s enforceability may be tested through post-grant proceedings such as Inter Partes Review (IPR) or litigation. Analyzing such activity provides insights into the robustness of the claims and potential for invalidation.


Implications for Stakeholders

  • Pharmaceutical companies: The ’011 patent potentially provides market exclusivity for a new chemical entity or therapeutic method, influencing R&D and commercial strategies.
  • Generic manufacturers: Broad claim scopes could impede generic entry until patent expiration or challenge.
  • Patent licensors and licensees: The patent creates licensing opportunities or defensive IP shields.

Conclusion

The ’011 patent’s claim set defines a robust scope likely emphasizing novel chemical entities or therapeutic applications. Its strategic value depends on how its claims compare with prior art and existing patents, influencing freedom-to-operate evaluations and patent lifecycle management. A comprehensive understanding of its scope is essential for informed decision-making in drug development, patent enforcement, and licensing negotiations.


Key Takeaways

  • The ’011 patent’s scope revolves around specific chemical compounds or therapeutic methods, with claims structured from broad independent to narrower dependent claims.
  • Its strength and enforceability depend heavily on claim language clarity, novelty, and non-obvious features relative to prior art.
  • The patent landscape is competitive; strategic positioning requires detailed comparison with related patents.
  • Broad claims can provide strong protection but risk invalidation; narrower claims enhance vulnerability but improve defensibility.
  • Continuous monitoring of prosecution, litigation, and potential challenges is vital for maintaining patent integrity and optimizing commercial leverage.

FAQs

1. What is the typical scope of pharmaceutical patents like the ’011 patent?
Pharmaceutical patents generally focus on chemical compounds, formulations, or therapeutic methods. Their scope can be broad—covering a class of compounds—or narrow—targeting specific molecules or uses—depending on how claims are drafted.

2. How does claim language influence the enforceability of a patent?
Precise, clear claims define territorial rights. Overly broad claims risk invalidation for encompassing prior art, while overly narrow claims may limit market protection. The language determines the patent’s scope and legal strength.

3. Can the ’011 patent prevent generics from entering the market?
If the claims cover the active compound or its method of use, they can block generic applications via an Paragraph IV certification or patent litigation. The extent depends on claim breadth and validity.

4. How does the patent landscape impact the commercial value of the ’011 patent?
A strong, defensible patent in a competitive landscape enhances licensing opportunities and market exclusivity. Conversely, overlapping or weak claims diminish commercial leverage.

5. What strategies can companies employ to analyze or challenge such patents?
They can perform patent landscaping, prior art searches, or file post-grant reviews like IPRs. Also, developing alternative compounds or delivery methods can circumvent patent claims.


References

[1] U.S. Patent No. 11,566,011.
[2] USPTO Patent Full-Text and Image Database.
[3] Patent Landscape Analysis Tools such as PatBase or Questel Orbit.
[4] Strategic Patent Litigation Reports (e.g., Lex Machina).

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Drugs Protected by US Patent 11,566,011

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Vanda Pharms Inc HETLIOZ tasimelteon CAPSULE;ORAL 205677-001 Jan 31, 2014 AB RX Yes Yes 11,566,011 ⤷  Get Started Free Y Y ⤷  Get Started Free
Vanda Pharms Inc HETLIOZ LQ tasimelteon SUSPENSION;ORAL 214517-001 Dec 1, 2020 RX Yes Yes 11,566,011 ⤷  Get Started Free Y 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 11,566,011

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3105212 ⤷  Get Started Free
European Patent Office 3470405 ⤷  Get Started Free
European Patent Office 4223747 ⤷  Get Started Free
Japan 2017506642 ⤷  Get Started Free
Japan 2020079248 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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