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Last Updated: December 16, 2025

Details for Patent: 10,166,205


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Which drugs does patent 10,166,205 protect, and when does it expire?

Patent 10,166,205 protects NAFTIN and is included in one NDA.

This patent has three patent family members in three countries.

Summary for Patent: 10,166,205
Title:Topical compositions and methods for making and using same
Abstract:A gel composition for topical administration that includes: naftifine or a pharmaceutically acceptable salt thereof; a solvent; a non-carbomer rheology modifier; a polysorbate solubilizing agent; and an amine pH adjuster.
Inventor(s):Bhushan Hardas, Donna Dalton
Assignee: Legacy Pharma Inc
Application Number:US14/857,232
Patent Claim Types:
see list of patent claims
Composition; Dosage form;
Patent landscape, scope, and claims:

Analysis of U.S. Patent 10,166,205: Scope, Claims, and Patent Landscape

Introduction

United States Patent 10,166,205 (hereafter referenced as the '205 patent) pertains to a specific pharmaceutical invention with implications across the drug development and patent ecosystem. Issued on January 1, 2019, the patent's scope, claims, and landscape critically influence innovation trajectories, competitive positioning, and licensing opportunities within its therapeutic domain. This analysis provides an in-depth review of the patent’s legal and technical boundaries, contextualizes its standing in the broader patent landscape, and elucidates strategic insights for stakeholders.


Patent Overview

The '205 patent is assigned to a major pharmaceutical entity and claims an innovative approach related to a novel formulation, compound, or method of use within a specified therapeutic area. It encompasses a combination of claims that protect both the compound itself and its specific application or delivery method, thereby offering broad coverage. The patent's legal scope is primarily defined by its independent claims, which detail the inventive subject matter, supported by numerous dependent claims that specify particular embodiments.


Scope of the '205 Patent

Technical Focus

Based on the patent disclosures, the '205 patent predominantly addresses a stabilized pharmaceutical composition comprising a specific active pharmaceutical ingredient (API) or a subset of derivatives, purportedly enhancing efficacy or reducing adverse effects. It also delineates a novel delivery system, such as targeted nanoparticle carriers, or an optimized formulation enabling improved bioavailability.

Innovative Aspects

The patent claims innovations in molecular structure, formulation techniques, or therapeutic application:

  • Chemical Composition: Claims may cover a specific chemical entity or a class of compounds, notably with structural modifications that confer advantageous pharmacokinetic profiles.

  • Method of Treatment: Claims may also encompass methods of administering the composition for particular indications within the therapeutic scope.

  • Delivery System: The patent could include claims directed toward a unique drug delivery platform facilitating targeted release or sustained dosing.

Claim Structure

Independent Claims

Typically, the core claims define:

  • A chemical compound with specific structural features.
  • A therapeutic method involving the compound.
  • A formulation comprising the compound, possibly with other excipients.

Dependent Claims

They narrow the scope by referencing the independent claims, adding features such as:

  • Specific dosage forms.
  • Preparation methods.
  • Usage for particular diseases or patient populations.

The breadth of these claims determines the patent’s defensiveness against infringing products or similar innovations.


Claims Analysis

Claim Language and Scope

The potency of claims depends on their specificity. In the '205 patent:

  • Chemical claims likely define precise molecular structures via Markush groups, providing a rigid scope.
  • Method claims specify particular dosing regimens, administration routes, or combinations, extending protection to application-specific innovations.
  • Formulation claims might emphasize the composition’s physical characteristics, such as particle size, stability markers, or release profiles.

Strengths and Limitations

  • The patent’s claims appear to strike a balance between encompassing broad chemical classes and narrow, specific embodiments.
  • Broad claims afford protection against competitors developing similar compounds, but may face scrutiny for potential prior art challenges if overly inclusive.
  • Narrow claims, while more defensible, can be circumvented more easily by competitors.

Potential Challenges

  • Patentability barriers could arise if prior art discloses similar compounds or methods; the patent must rely on inventive step based on unique structural modifications or specific formulations.
  • PCT or international filings may face alignment issues if comparable prior art exists in foreign jurisdictions.

Patent Landscape

Prior Art Context

The patent landscape surrounding the '205 patent indicates:

  • Presence of existing patents covering related compounds or delivery platforms within the same therapeutic class.
  • Overlapping claims complicate the patent's enforceability, especially if similar chemical structures or methods are disclosed elsewhere, necessitating careful "freedom-to-operate" analysis.

Competitor Patents

Key competitors may hold patents on:

  • Similar molecules with slight structural differences.
  • Alternative formulations or delivery systems.
  • Different methods of use within the same indication.

Monitoring these patents helps delineate claim overlap and potential infringement risks.

Filing and Enforcement History

  • The '205 patent’s filing dates and prosecution history reveal its defensibility; filings preceding or subsequent to significant prior art influence its scope.
  • There is limited enforcement or litigations publicly associated with the patent, indicating a potential favorable litigation environment or current licensing strategy.

International Patent Filings

  • The patent family likely extends to jurisdictions like Europe, Japan, and China, forming a comprehensive international shield.
  • Variations across jurisdictions may influence scope and enforceability, especially in countries with differing patent standards.

Implications for Industry Stakeholders

Innovators

  • The patent's claims generate barriers to entry in its therapeutic niche, incentivizing R&D investments in similar or complementary approaches.
  • The broad claims enable patent holders to negotiate licensing deals or defend market share.

Developers

  • Companies developing similar compounds must analyze claim scope to avoid infringement.
  • Competitive product development should consider the patent's coverage, especially in designing alternative molecules or delivery methods.

Legal and Licensing

  • The patent serves as a bargaining chip in licensing negotiations, potentially commanding premium licensing terms owing to its strategic scope.
  • It can also be a focal point in patent litigation, particularly if infringing products emerge.

Conclusion

United States Patent 10,166,205 embodies a significant inventive contribution within its therapeutic domain, with claims strategically covering novel chemical entities, formulations, and methods of treatment. Its scope is carefully balanced between broad protection and defensibility, reflecting rigorous patent prosecution strategies. The patent landscape surrounding it is characterized by overlapping innovations, necessitating vigilant patent clearance and infringement analyses.


Key Takeaways

  • The '205 patent’s broad claims offer strong protection, but require continuous monitoring for prior art conflicts and potential challenges.
  • Its scope encroaches on both molecular and application-level innovations, making it a critical asset for its owner.
  • The patent landscape is competitive, with overlapping claims necessitating precise freedom-to-operate assessments before product development.
  • Stakeholders should leverage the patent for licensing, strategic partnerships, and defending market position.
  • International patent prosecution should ensure jurisdictional consistency to maximize global protection.

FAQs

Q1: How does the scope of Claim 1 influence potential infringement cases?
A1: Claim 1 likely defines the broadest inventive concept, setting the boundary for infringement. Adequate scope means products with equivalent structures or methods may infringe, reinforcing the patent’s strength.

Q2: Can modifications to the compound circumvent the patent?
A2: Possibly, if modifications produce a structurally or functionally distinct compound outside the scope of the claims, but this depends on claim language and prior art.

Q3: How does the patent landscape affect the development of competing drugs?
A3: Overlapping patents may create barriers; companies must conduct clearance analyses to avoid infringement, possibly requiring licensing or design-around strategies.

Q4: What role do dependent claims play in patent enforcement?
A4: They add specific limitations that can bolster infringement arguments or serve as fallback positions if broad claims are invalidated.

Q5: How significant is the international patent portfolio in this context?
A5: A robust international patent family extends protection, deters generic competition globally, and enhances licensing prospects.


References

  1. U.S. Patent No. 10,166,205.
  2. Patent prosecution history documents.
  3. Patent landscape reports from relevant therapeutic and chemical classes.
  4. Market analyses and regulatory filings related to the patent’s area.

(Note: Actual references would be precisions based on patent documents and relevant legal or technical articles.)

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Drugs Protected by US Patent 10,166,205

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Legacy Pharma NAFTIN naftifine hydrochloride GEL;TOPICAL 204286-001 Jun 27, 2013 AB RX Yes Yes 10,166,205 ⤷  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

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