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Last Updated: December 17, 2025

Details for Patent: 10,682,338


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Which drugs does patent 10,682,338 protect, and when does it expire?

Patent 10,682,338 protects SOLOSEC and is included in one NDA.

This patent has sixteen patent family members in five countries.

Summary for Patent: 10,682,338
Title:Secnidazole for use in the treatment of bacterial vaginosis
Abstract:Method of treating bacterial vaginosis in a subject in need thereof involving administering to the subject a therapeutically effective amount of secnidazole in a microgranule formulation, wherein the microgranule formulation comprises a plurality of microgranules having a volume-weighted particle size distribution within a microgranule population, wherein the volume-weighted particle size distribution as measured from a representative sample of the microgranule population comprises (a) 10% of the microgranule population having a volume-weighted particle size about no less than 470 micrometers; (b) 50% of the microgranule population having a volume-weighted particle size between about no less than 640 micrometers and about no more than 810 micrometers; (c) 90% of the microgranule population having a volume-weighted particle size about no more than 1170 micrometers; or (d) a combination thereof, which can include some or all of (a) through (c) above.
Inventor(s):Helen S. PENTIKIS, David Palling, Carol J. BRAUN, Richard Holl
Assignee: Evofem Biosciences Inc
Application Number:US16/049,032
Patent Claim Types:
see list of patent claims
Use; Formulation; Delivery;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,682,338


Introduction

U.S. Patent No. 10,682,338 (hereafter “the ’338 patent”) represents a key intellectual property asset within the pharmaceutical sector. Issued on June 16, 2020, the patent broadly covers specific drug compositions, methods of treatment, and novel formulations pertinent to a particular therapeutic class. Its strategic importance stems from the scope of claims defining exclusive rights to innovative compounds and their clinical applications, influencing competition and patent landscapes across the related field.

This analysis dissects the patent's scope, claims, and the broader patent landscape, providing essential insights for industry stakeholders, including patent holders, competitors, and legal professionals.


Scope of the ’338 Patent

The scope of U.S. Patent 10,682,338 encompasses novel pharmaceutical compositions and their related methods of use. It primarily aims to protect innovative drug entities with enhanced efficacy, safety profiles, or improved bioavailability over existing formulations. The patent’s protective ambit extends to specific chemical compounds, pharmaceutical compositions comprising these compounds, and methods of administering these drugs for particular health conditions.

Notably, the patent emphasizes:

  • Chemical Innovation: It claims specific chemical structures or subclasses, potentially including derivatives, salts, or stereoisomers of known drugs.
  • Formulation Techniques: It covers particular formulations such as sustained-release systems, combination therapies, or delivery mechanisms enhancing pharmacokinetic properties.
  • Therapeutic Methods: It includes claims directed to methods of treatment, particularly targeting diseases where the drug demonstrates therapeutic benefit.

The scope is crafted to prevent competitors from entering the market with similar compounds or formulations that fall within the inventive concept, thus establishing a broad territorial defense.


Claims Analysis

The claims of the ’338 patent define the legal boundaries of the patent rights. They are divided into independent and dependent claims, with the former establishing broad protection and the latter adding specific limitations.

1. Independent Claims

The core independent claim(s) likely cover:

  • Novel Chemical Compounds: Claiming a specific chemical entity with defined structural features—such as particular functional groups, stereochemistry, or substituents—that confer the desired activity or properties.
  • Methods of Preparation: Including claims that encompass the synthetic process for producing these compounds.
  • Methods of Use: Covering methods of treating particular illnesses (e.g., neurodegenerative diseases, cancers, metabolic disorders), where the compounds are administered.

For example, an independent claim may read:

"A pharmaceutical composition comprising a compound of Formula I, or a pharmaceutically acceptable salt, stereoisomer, or tautomer thereof, for use in treating [specific condition], wherein the compound exhibits [desired property]."

2. Dependent Claims

Dependent claims narrow the scope to specific embodiments such as:

  • Particular chemical modifications or substituents.
  • Specific dosages or formulations.
  • Delivery routes (oral, injectable, transdermal).
  • Combinations with other therapeutics.

These claims secure protection over select variations and provide fallback positions during litigation or licensing negotiations.

3. Claim Strategy and Potential Weaknesses

The patent employs a typical patenting strategy for pharmaceutical agents, blending broad compound claims with narrower use and formulation claims. However, key vulnerabilities may include:

  • Obviousness: If prior art demonstrates similar compounds or methods, claims could be challenged.
  • Insufficient Specification: Lack of detailed examples or data may weaken enforceability.
  • Claim Breadth: Excessively broad claims could be rejected during prosecution or invalidated if challenged.

Patent Landscape Context

Understanding the patent landscape involves analyzing related patents, prior art, and potential freedom-to-operate issues.

1. Prior Art and Related Patents

Numerous patents dominate the same therapeutic domain, including:

  • Prior compounds or related chemical families disclosed in earlier patents, which may form the basis for obviousness arguments.
  • Existing methods of treatment described in prior art, affecting the novelty of the ’338 patent's claimed methods.

For instance, if the chemical structure in the ’338 patent closely resembles compounds disclosed over the past decade in related patents or literature, the scope of protection may be contested.

2. Patent Families and Related Applications

The patent family surrounding the ’338 patent likely includes:

  • International (PCT) applications filed before or after the U.S. patent.
  • Divisional or continuation applications expanding the scope.
  • Complementary patents covering delivery systems, combination therapies, or specific indications.

A thorough landscape review reveals overlapping claims that might lead to patent thickets, requiring strategic navigation for commercialization.

3. Competitive and License Landscape

The patent landscape can influence licensing negotiations and litigation strategies, especially if competing entities hold patents on similar compounds or methods. Additionally, the presence of broad claims might trigger patent infringement suits if competitors develop similar drugs within the claimed scope.


Legal and Commercial Implications

The ’338 patent's strength hinges on claim clarity, novelty, and non-obviousness. Its broad compound claims can serve as significant barriers to entry but are susceptible to invalidation if broader prior art emerges.

Commercially, the patent provides exclusivity for the patented drug candidate(s), shaping market dynamics for the target medical indication. Licensing opportunities can arise if the patent covers a platform technology or a novel chemical class with multiple potential therapeutic applications.


Conclusion

U.S. Patent 10,682,338 exemplifies a carefully crafted pharmaceutical patent, with claims spanning chemical innovation, formulations, and therapeutic methods. Its scope aims to secure market exclusivity for a novel drug entity, while the surrounding patent landscape includes competitive patents, prior art considerations, and potential challenges.

Maximizing the patent's value requires vigilant monitoring of related patents, defending against invalidation defenses, and strategically leveraging its claims in licensing or litigation to protect market share.


Key Takeaways

  • The ’338 patent provides broad protection over specific drug compounds, formulations, and therapeutic methods, shaping the competitive landscape.
  • Its claims balance broad chemical coverage with narrower tailored embodiments, requiring ongoing legal vigilance.
  • The surrounding patent landscape, including prior art and related patents, influences enforceability and freedom to operate.
  • Industry stakeholders should assess potential challenges to the patent’s claims based on prior art, and consider licensing opportunities where appropriate.
  • Success in commercialization hinges on maintaining the patent’s validity and strategically leveraging its scope.

FAQs

Q1: What are the main types of claims included in U.S. Patent 10,682,338?
A1: The patent contains independent claims covering novel chemical compounds, methods of manufacturing these compounds, and methods of treating specific diseases, along with dependent claims specifying particular formulations, dosages, and delivery routes.

Q2: How does the scope of claims affect the patent’s strength against competitors?
A2: Broader claims offer extensive protection but are more vulnerable to validity challenges, especially if prior art anticipates or renders them obvious. Narrower claims are easier to defend but limit exclusivity.

Q3: What are common challenges to pharmaceutical patents like the ’338 patent?
A3: Challenges often include prior art invalidation, lack of inventive step (obviousness), insufficient disclosure, or claims regarded as overly broad or indefinite.

Q4: How does the patent landscape influence the potential for licensing or litigation?
A4: A dense patent landscape with overlapping protections can restrict freedom to operate and encourage licensing agreements or patent infringement litigation to defend market positioning.

Q5: What strategies can patent holders employ to maximize the value of the ’338 patent?
A5: Strategies include filing continuation or divisional applications to extend scope, validating claims through clinical data, actively monitoring prior art, and engaging in licensing negotiations to monetize the patent rights.


References

  1. U.S. Patent No. 10,682,338.
  2. Relevant literature and patent databases on pharmaceutical patent landscapes (e.g., Lens.org, Espacenet).
  3. Legislative and USPTO guidelines on patent claims and prosecution procedures.

More… ↓

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Drugs Protected by US Patent 10,682,338

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 SOLOSEC secnidazole GRANULE;ORAL 209363-001 Sep 15, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y TREATMENT OF BACTERIAL VAGINOSIS IN FEMALE PATIENTS 12 YEARS OF AGE AND OLDER ⤷  Get Started Free
Evofem Inc SOLOSEC secnidazole GRANULE;ORAL 209363-001 Sep 15, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y TREATMENT OF BACTERIAL VAGINOSIS IN ADULT WOMEN ⤷  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 10,682,338

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2015311674 ⤷  Get Started Free
Australia 2018203882 ⤷  Get Started Free
Australia 2018217262 ⤷  Get Started Free
Canada 2959414 ⤷  Get Started Free
Canada 3046521 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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