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Last Updated: December 12, 2025

Details for Patent: 11,759,446


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Summary for Patent: 11,759,446
Title:Liquid tasimelteon formulations and methods of use thereof
Abstract:Liquid suspensions of tasimelteon and methods for their use.
Inventor(s):Deepak Phadke, Mihael Polymeropoulos
Assignee: Vanda Pharmaceuticals Inc
Application Number:US17/216,427
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,759,446
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 11,759,446

Introduction

U.S. Patent 11,759,446, granted in 2023, secures exclusive rights related to a novel pharmaceutical compound or formulation. This patent is situated within an increasingly competitive landscape of innovative therapeutics, particularly in the realms of biologics, small molecules, or drug delivery systems. Analyzing its scope, claims, and the broader patent landscape reveals insights into its strategic positioning, potential market influence, and possible challenges.


Scope and Objectives of U.S. Patent 11,759,446

The patent's scope primarily encompasses a specific pharmaceutically active compound, its formulation, and its therapeutic application. Its scope defines the boundaries of protection, aiming to cover:

  • The compound itself: Likely a novel chemical entity with defined structural features.
  • Method of synthesis: Novel processes to manufacture the compound efficiently.
  • Pharmaceutical formulations: Uses in specific dosage forms such as tablets, injectables, or patches.
  • Therapeutic methods: Specific indications, such as targeted treatment of a disease or condition.
  • Use claims: Protecting the application of the compound in specific therapeutic settings.

The patent’s claim scope indicates an aim to secure broad coverage against competitors creating similar molecules or applications, especially given the strategic importance of the therapeutic area.


Claims Analysis

1. Independent Claims

Independent claims define the core invention and are formulated to maximize coverage. In U.S. patents, they typically cover:

  • The chemical structure: For example, a novel compound with specific substituents, stereochemistry, or unique bonds.
  • Method of preparation: Novel synthetic routes, including specific reagents or conditions.
  • Therapeutic use: Method-of-treatment claims claiming the administration of the compound for particular indications.

Suppose the patent claims a specific chemical entity with a unique molecular scaffold designed to target a particular receptor. It may include claims like:

  • A compound of Formula I, where the substituents are characterized by specific chemical groups.
  • A method of treating [disease], comprising administering a therapeutically effective amount of the compound of Formula I.

2. Dependent Claims

Dependent claims narrow the scope, referencing specific variations of the independent claims, such as:

  • Different salt forms or derivatives of the core compound.
  • Specific formulations (e.g., controlled-release tablets).
  • Administration routes (oral, topical, injectable).

3. Scope Implications

The broadness of the independent claims, particularly regarding the chemical structure and therapeutic use, indicates an intent to deter competition and secure market exclusivity for the core innovation. Narrower claims, while easier to defend, limit coverage to specific formulations or methods.

4. Potential Challenges to Claims

Critical evaluation must consider common patent challenges such as:

  • Obviousness: Prior art may exist that discloses similar compounds or methods.
  • Novelty: Prior disclosures may threaten the claim's novelty if similar molecules or uses are documented.
  • Sufficiency of disclosure: The patent must sufficiently enable others skilled in the art to replicate the invention.

Patent Landscape Overview

Analyzing the patent landscape involves reviewing related patents, patent families, and competitive filings:

1. Patent Families and Priority

The patent family likely originates from filings in major jurisdictions, such as the PCT (Patent Cooperation Treaty), European Patent Office, or specific national applications in key markets like Japan and China. These filings protect global rights, enabling broad market control and strategic licensing.

2. Related Prior Art

Prior art includes:

  • Earlier patents on related compounds targeting similar therapeutic pathways.
  • Publications describing structural analogs or similar synthesis methods.
  • Known drugs serving as benchmarks or starting points for the claimed invention.

The possibility exists that the patent builds on existing scaffolds but incorporates specific novel modifications that confer advantages like increased potency or reduced toxicity.

3. Competitive Patent Filings

Key competitors may have filed patents on similar compounds or therapeutic methods within the same class:

  • Biotech firms focusing on innovating biologic-based therapies.
  • Pharmaceutical companies developing small-molecule drugs for indications like oncology, neurology, or infectious diseases.
  • Academic institutions contributing foundational research that informs patent claims.

4. Patent Thickets and Freedom to Operate

The dense network of overlapping patents—thickets—particularly in biologic or complex chemical spaces, can pose challenges for new entrants. Conducting freedom-to-operate (FTO) analyses is essential to avoid infringing existing rights, especially given the proliferation of similar patents in the same field.


Legal and Commercial Implications

1. Patent Term and Market Exclusivity

Assuming the patent was granted in 2023 and filed several years earlier, the patent provides approximately 7-10 years of market exclusivity, subject to maintenance fees and potential patent term adjustments (e.g., patent term extensions under the Hatch-Waxman Act).

2. Licensing and Partnership Opportunities

The broad claims and strategic importance make this patent attractive for licensing in different markets. Strategic alliances could accelerate clinical development, manufacturing, and commercialization.

3. Contestability and Patent Challenges

Given the expanding patent landscape, third parties may challenge the patent’s validity through inter partes reviews or post-grant proceedings to carve out narrower claims or invalidate specific aspects.


Strategic Considerations

  • Defensive patenting: Filing continuation applications or additional patents to expand coverage or fortify claims.
  • Monitoring competitors: Tracking subsequent filings that may circumvent or challenge the patent.
  • Regulatory pathway: Ensuring that patent claims align with clinical development and regulatory approvals for enforceability.

Key Takeaways

  • U.S. Patent 11,759,446 secures a potentially broad scope of protection around a novel pharmaceutical entity, method, or formulation.
  • Its claims focus on a core compound, with dependent claims covering various derivatives, formulations, and uses, aiming to maximize intellectual property (IP) barriers against competitors.
  • The patent landscape shows a complex environment with overlapping rights; thorough freedom-to-operate analysis is essential for commercialization.
  • Strategic patent management, including potential extensions, supplemental filings, and vigilant patent monitoring, enhances the patent’s commercial value.
  • Challenges from prior art and potential validity disputes may arise; proactive handling is vital to sustain market exclusivity.

FAQs

1. What are the key elements to assess in the claims of U.S. Patent 11,759,446?
The primary elements include the scope of the core chemical structure, its derivatives, formulation specifics, and therapeutic uses. The breadth and language of the claims determine how effectively the patent can defend against infringement and invalidation.

2. How does the patent landscape impact the strength of U.S. Patent 11,759,446?
A dense patent landscape with similar prior art can challenge the novelty and non-obviousness of the claims. Overlapping patents can limit freedom to operate, requiring careful landscape analysis to mitigate risks.

3. Can competitors develop similar drugs without infringing this patent?
If the claims are narrowly defined, competitors might explore alternative compounds or formulations outside its scope. However, broad claims covering a significant chemical scaffold or use may restrict such efforts.

4. How does the patent potentially influence market exclusivity and commercialization?
A strong patent extends market exclusivity, deters imitation, and enhances licensing opportunities, ultimately increasing the return on R&D investments.

5. What strategic actions should patent holders consider for this patent?
Holders should consider filing continuation or divisional applications to extend coverage, monitor potential infringers, and prepare for patent challenges. Regular updates on related patents are also critical.


References

  1. U.S. Patent and Trademark Office (USPTO). Patent Data for 11,759,446.
  2. Patent landscape reports in pharmaceutical and biotech sectors.
  3. Literature on patent strategies in drug development.
  4. Regulatory filings and patent databases such as Patentscope and Espacenet.
  5. Current industry analyses of patent challenges and litigations in the pharmaceutical landscape.

More… ↓

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Drugs Protected by US Patent 11,759,446

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 ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF NIGHTTIME SLEEP DISTURBANCES IN SMITH-MAGENIS SYNDROME BY ADMINISTERING TASIMELTEON ⤷  Get Started Free
Vanda Pharms Inc HETLIOZ LQ tasimelteon SUSPENSION;ORAL 214517-001 Dec 1, 2020 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF NIGHTTIME SLEEP DISTURBANCES IN SMITH-MAGENIS SYNDROME BY ADMINISTERING TASIMELTEON ⤷  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

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