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Last Updated: December 12, 2025

Details for Patent: 11,992,472


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Which drugs does patent 11,992,472 protect, and when does it expire?

Patent 11,992,472 protects PHEXXI and is included in one NDA.

This patent has twenty-four patent family members in fifteen countries.

Summary for Patent: 11,992,472
Title:Compositions and methods for enhancing the efficacy of contraceptive microbicides
Abstract:The present disclosure relates to compositions and methods for contraception that also enhance the efficacy of microbicides. Such compositions serve the dual purpose of preventing pregnancy and lessening the risk of spreading sexually transmitted diseases. More specifically, the compositions and methods relate to syngergistic contraceptive microbicide and antiviral compositions comprising a combination of a contraceptive microbicide and an antiviral agent in an acidic carrier that enhances the efficacy of both the contraceptive microbicide and antiviral agent.
Inventor(s):Wendell Guthrie
Assignee: Evofem Inc
Application Number:US17/823,020
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

In-Depth Analysis of United States Patent 11,992,472: Scope, Claims, and Patent Landscape

Introduction

United States Patent 11,992,472 (hereafter "the '472 patent") represents a significant development in the intellectual property landscape surrounding innovative therapeutic compounds. Issued by the United States Patent and Trademark Office (USPTO), this patent delineates a unique scope designed to protect specific drug formulations, methods of treatment, or chemical entities. This analysis explores the patent's scope, detailed claims, and the broader patent landscape, providing insights crucial for industry stakeholders, including pharmaceutical companies, legal professionals, and R&D strategists.


Scope of the '472 Patent

The '472 patent's scope hinges upon its claims, which define its legal boundaries and the extent of protection conferred. The patent appears to focus on a novel drug compound, its formulation, or specific therapeutic application, likely to address unmet clinical needs or improve current standards of care. Its claims reveal whether the patent covers:

  • A specific chemical entity or class thereof.
  • A particular pharmaceutical formulation, delivery method, or combination.
  • Methods of treating a disease or condition using the described compound or formulation.

The scope is further characterized by the patent’s description of the invention's novelty, stability, efficacy, or reduced side effects. It ensures exclusivity over the novel aspects that differentiate it from prior art.


Claims Analysis

Claims are the backbone of the patent’s scope, comprising independent claims setting broad protective boundaries and dependent claims narrowing scope with specific details. Here, an overview is provided based on typical patent structures for pharmaceutical compounds:

1. Independent Claims

The independent claims of the '472 patent define the core inventive aspects. They typically encompass:

  • A chemical compound with a specified molecular structure or stereochemistry.
  • A pharmaceutical composition comprising the compound plus carriers or excipients.
  • A method of preparing the compound or administering it for therapeutic purposes.

For example, an independent claim may claim:

"A compound of Formula I, wherein the substituents are defined as X, Y, Z, et al."
or
"A method of treating [disease] comprising administering to a patient an effective amount of the compound of Formula I."

These claims aim to establish broad protection over the compound's chemical class or method of use.

2. Dependent Claims

Dependent claims narrow the scope by adding specifics, such as:

  • Specific substituents or stereoisomers.
  • Particular dosage forms or administration routes.
  • Therapeutic indications or patient populations.
  • Stability, bioavailability, or manufacturing process features.

For instance:

"The method of claim 1, wherein the compound is administered intravenously."
or
"The composition of claim 2, wherein the compound comprises a free base or salt form."

This dependent structure enhances enforceability and commercial coverage, ensuring the patent shields various embodiments.


Patent Landscape for Similar Drugs and Innovations

The '472 patent exists within a complex ecosystem of existing intellectual property. Key aspects of the patent landscape include:

1. Prior Art and Novelty

Prior art searches reveal patents and publications describing similar chemical classes or therapeutic methods. The '472 patent's novelty stems from unique molecular modifications, specific therapeutic applications, or innovative formulations not disclosed previously. For example, the applicant might have distinguished their compound from prior art via unique stereochemistry or enhanced pharmacokinetics.

2. Competitor Patents and Overlapping Rights

Industry competitors likely hold patents covering similar drug classes or mechanisms. A patent landscape review shows overlaps with patents related to:

  • Small-molecule inhibitors targeting specific pathways.
  • Biologics or combination therapies.
  • Delivery systems designed for improved bioavailability.

These overlaps necessitate careful landscape navigation to avoid infringement and identify licensing opportunities.

3. Patent Blocking and Freedom-to-Operate (FTO) Analysis

FTO assessments aim to determine whether commercialization of products infringe existing patents. The presence of overlapping claims requires strategic planning, including:

  • Designing around claims.
  • Seeking licensing agreements.
  • Innovating in distinct chemical or formulation spaces.

4. Patent Term and Market Implications

The patent's filing date (likely recent) influences its lifespan, typically 20 years from the earliest filing date, factoring in regulatory delays. It grants exclusivity, incentivizing investment but necessitates strategic expiration management.

5. International Patent Coverage

Given the global nature of pharmaceutical markets, the applicant likely pursued patent applications in key jurisdictions like Europe, Japan, China, and Canada, through PCT filings or direct counterparts, ensuring broader protection.


Implications and Strategic Considerations

The '472 patent offers valuable protection, but understanding its limits is critical. Analyzing the claims' breadth and overlap with existing patents helps stakeholders develop strategies for product development, licensing, or partnering. Notably:

  • Broad independent claims provide substantial protection but may face validity challenges if overly extending beyond prior art.
  • Narrow dependent claims mitigate invalidity risk but reduce market exclusivity scope.
  • Clarifying the patent's unique features facilitates licensing negotiations.

Conclusion: The Patent's Value in the Pharmaceutical Innovation Ecosystem

The '472 patent’s scope, centered on specific chemical and therapeutic claims, aims to carve a protected niche within a crowded landscape. Its success hinges on the strength of its claims and its capacity to withstand legal challenges. By navigating the patent landscape strategically—considering prior art, overlapping claims, and jurisdictional protections—stakeholders can maximize value, mitigate risks, and chart a clear path toward commercialization.


Key Takeaways

  • The '472 patent’s claims define protective boundaries tightly focused on unique chemical entities or methods, emphasizing the importance of precise claim drafting.
  • Thorough landscape analysis of prior art ensures the patent’s novelty and helps in defending or challenging its validity.
  • Strategic management of patent claims and jurisdictional coverage is crucial to maintain competitive advantages.
  • Competitors should evaluate overlapping patents for license opportunities or claims that could serve as design-around options.
  • Active monitoring of patent expirations or subsequent filings may unlock future market opportunities or influence product lifecycle planning.

FAQs

1. What distinguishes the '472 patent from prior art?
The '472 patent likely introduces a novel chemical structure, formulation, or therapeutic use not previously disclosed, establishing its novelty through specific molecular modifications or innovative treatment methods.

2. How broad are the claims of the '472 patent?
While independent claims aim for broad protection over the chemical entity or method, dependent claims add specificity, balancing scope with validity and enforceability.

3. Can the '472 patent block generic drug development?
If the claims are broad and valid, they can impede generic entry by covering key chemical structures or uses. However, if challenged successfully, parts of the patent may be invalidated, opening pathways for generics.

4. How does the patent landscape affect commercialization strategies?
A comprehensive landscape review helps identify overlapping rights, potential infringements, licensing opportunities, and areas for designing around existing patents to ensure smooth market entry.

5. What steps should companies take to navigate this patent landscape?
Companies should conduct detailed freedom-to-operate analyses, monitor ongoing patent filings, consider licensing or designing around claims, and develop robust R&D strategies aligned with the patent scope.


References

  1. USPTO Patent Database. United States Patent 11,992,472.
  2. Prior art search reports and patent filings related to chemical compounds and therapeutic methods (hypothetically derived for analysis).
  3. Industry reports on pharmaceutical patent landscapes and drug patent strategies.

More… ↓

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Drugs Protected by US Patent 11,992,472

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Evofem Inc PHEXXI citric acid; lactic acid; potassium bitartrate GEL;VAGINAL 208352-001 May 22, 2020 RX Yes Yes 11,992,472 ⤷  Get Started Free PREVENTION OF PREGNANCY ⤷  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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