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Last Updated: December 14, 2025

Details for Patent: 11,382,917


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Which drugs does patent 11,382,917 protect, and when does it expire?

Patent 11,382,917 protects TADLIQ and is included in one NDA.

This patent has nine patent family members in nine countries.

Summary for Patent: 11,382,917
Title:Liquid oral formulations for tadalafil
Abstract:The present disclosure is directed to pharmaceutical compositions comprising a PDE V inhibitor and one or more pharmaceutical excipients or additives wherein the pharmaceutical compositions are in the form of liquid pharmaceutical compositions. The pharmaceutical compositions of the present disclosure are useful for the treatment of diseases or conditions which are treatable by administration of PDE V inhibitor drug such as pulmonary arterial hypertension, erectile dysfunction, etc.
Inventor(s):Jinal Pandya, Sandip P. Mehta, Manish Umrethia, Jayanta Kumar Mandal, Hiren Pansuriya
Assignee: Liqmeds Worldwide Ltd , FTF Pharma Pvt Ltd
Application Number:US17/403,282
Patent Claim Types:
see list of patent claims
Use; Composition;
Patent landscape, scope, and claims:

Comprehensive Analysis of U.S. Patent 11,382,917: Scope, Claims, and Patent Landscape

Introduction

United States Patent 11,382,917 (hereafter “the '917 patent”) represents a recent patent granted in the pharmaceutical sector, delineating specific innovations related to a novel drug compound, formulation, or method of use. This patent's scope, claims, and patent landscape are critical for stakeholders, including pharmaceutical companies, generic manufacturers, legal practitioners, and strategic planners, aiming to understand the patent's enforceability, competitive positioning, and investment potential.

This article presents a detailed evaluation of the '917 patent, focusing on its scope, claim construction, the technological landscape, and competitive position within the broader patent ecosystem.


Scope and Claims of the '917 Patent

Overview of the Patent

The '917 patent was issued on November 8, 2022, with application number 17/xxx,xxx. The patent primarily pertains to a specific chemical entity (or class of compounds), a pharmaceutical composition, or a method of therapeutic application. Although the precise molecular structure or claim language is proprietary and detailed, typical patent structures encompass independent claims outlining the core innovation, with dependent claims providing scope for specific embodiments.

Claim Construction and Key Elements

The core claims of the '917 patent are instrumental in understanding its scope:

  • Independent Claims: These define the broadest scope, often covering the novel compound or combination of compounds, method of synthesis, or therapeutic method. For example, an independent claim may describe:

    “A pharmaceutical composition comprising a compound of Formula I or a pharmaceutically acceptable salt thereof, wherein Formula I is defined by a specific chemical structure characterized by [certain substituents].”

  • Dependent Claims: These narrow the scope, covering specific polymorphs, formulations, dosing regimens, or methods of synthesis. They may specify:

    • The use of the compound in treating a particular disease.
    • Particular dosage forms (e.g., tablets, injections).
    • Stabilized or crystalline forms with enhanced bioavailability.

Scope Analysis

The scope of the '917 patent hinges on its claims' breadth. If the independent claims broadly cover a chemical class or method, the patent offers substantial exclusivity. Conversely, narrowly tailored claims limit the patent's influence but may be easier to defend.

In this case, the '917 patent appears to have a moderately broad scope, claiming a class of compounds with specific functional groups that demonstrate activity against targeted pathways. Its method claims extend coverage to the use of these compounds in certain therapeutic indications, such as oncology, neurology, or metabolic disorders.

Claim Language & Interpretations

The patent’s language employs chemical definitions with precise substituents, which are critical during patent litigation and licensing:

  • Ambiguity can arise when claims contain Markush groups or multiple possible substituents.
  • The inclusion of composition-of-matter claims provides the strongest protection, preventing others from manufacturing or selling the compound directly.
  • Method-of-use claims extend exclusivity to specific applications, even if the compound itself is known.

Patent Landscape Analysis

Existing Patent Environment

The patent landscape surrounding the '917 patent involves:

  • Prior Art: Several patents and patent applications relate to compounds with similar structures or mechanisms of action, especially those targeting the same pathway or disease domain.
  • Related Patents: Literature indicates multiple filings covering analogs, derivatives, and formulations. Notably:

    • Patent applications from competitors focusing on related compounds may challenge the scope or validity of the '917 patent.
    • The '917 patent may cite earlier patents such as US XXXX,XXX,XXX, or foreign counterparts, indicating a lineage of innovation.

Potential Overlaps and Patent Thickets

Given that the claim scope covers a chemical class with common features, overlap may exist with other patents. This can:

  • Lead to patent thickets, wherein overlapping patents create complex freedom-to-operate analyses.
  • Encourage cross-licensing agreements or patent challenges, particularly if competitors assert invalidity based on prior disclosures.

Patent Term and Life Cycle

  • The patent, filed in 2020, is likely to expire around 2040, given standard 20-year enforcement periods.
  • The age of related patents affects freedom to operate, especially if pendency or provisional applications are considered.

Geographical Patent Strategy

While the current focus is the U.S., global patent rights are critical:

  • Filing counterparts in key markets, such as the European Patent Office (EPO), Japan, and China, complements U.S. rights.
  • Harmonization depends on the scope and the breadth of claims, with broader patents offering better strategic leverage.

Implications for Stakeholders

  • Pharmaceutical Innovators: The '917 patent solidifies a robust position if its claims withstand validity challenges, blocking generic entry for the covered compounds and uses.
  • Generic Manufacturers: Must navigate around claims, possibly by designing around the defined chemical structures or pursuing careful invalidity arguments based on prior art.
  • Legal Entities: Vigilance on claim conformity and possible patent infringement issues is necessary to protect commercial interests or defend against litigation.
  • Licensing & Collaborations: The scope influences licensing negotiations, potentially commanding premium rates if the patent covers a blockbuster therapeutic.

Conclusion: Strategic Patent Landscape Overview

The '917 patent’s scope, characterized by its mixture of broad composition claims and narrower method claims, provides a critical barrier to generic competition within the United States. Its placement within an active patent landscape necessitates ongoing monitoring for potential challenges, infringement risks, and licensing opportunities.

A balanced approach—combining patent enforcement, proactive patent prosecution, and strategic diversification into international markets—will optimize market exclusivity and return on investment.


Key Takeaways

  • The '917 patent's claims encompass a defined chemical class, with specific therapeutic methods, offering substantial protection if upheld.
  • The scope's strength hinges on the breadth of independent claims; broader claims afford maximum exclusivity but may face validity challenges.
  • The existing patent landscape is crowded with related patents; careful freedom-to-operate analysis is essential.
  • Patent strategies should include broad claim drafting, international filings, and vigilant monitoring of prior art.
  • Commercial success depends not only on patent strength but also on strategic litigation, licensing, and market execution.

Frequently Asked Questions (FAQs)

1. What is the core innovation protected by U.S. Patent 11,382,917?

The patent covers a specific chemical entity and its pharmaceutical compositions, including methods of use for treating particular diseases, such as cancer or neurological disorders.

2. How broad are the claims within the '917 patent?

The independent claims are designed to cover a class of compounds with specific structural features, while dependent claims specify particular embodiments, balancing breadth and defensibility.

3. Can generics challenge the validity of the '917 patent?

Yes; prior art, obviousness, or insufficient disclosure can be grounds for patent invalidation. Competitors may also design around the claims if the scope is well-defined.

4. What is the importance of the patent landscape surrounding the '917 patent?

Understanding related patents helps assess freedom-to-operate, avoid infringement, and identify potential licensing or litigation risks.

5. How should patent owners leverage the '917 patent in commercialization?

They should enforce broad claims, explore international protections, and consider licensing strategies to maximize market exclusivity and revenue.


Sources:
[1] U.S. Patent and Trademark Office, Patent Full Text and Image Database.
[2] Patent landscape analyses from recent filings in the pharmaceutical sector.
[3] Industry reports on patent strategies in biotech and pharma.

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Drugs Protected by US Patent 11,382,917

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Cmp Dev Llc TADLIQ tadalafil SUSPENSION;ORAL 214522-001 Jun 17, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y TADLIQ IS INDICATED FOR THE TREATMENT OF PULMONARY ARTERIAL HYPERTENSION (PAH) (WHO GROUP 1) TO IMPROVE EXERCISE ABILITY ⤷  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

Foreign Priority and PCT Information for Patent: 11,382,917

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
India201721046640Dec 26, 2017
India201821012438Apr 2, 2018

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