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Last Updated: December 17, 2025

Details for Patent: 11,000,508


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Which drugs does patent 11,000,508 protect, and when does it expire?

Patent 11,000,508 protects SOLOSEC and is included in one NDA.

This patent has sixteen patent family members in five countries.

Summary for Patent: 11,000,508
Title:Secnidazole for use in the treatment of trichomoniasis
Abstract:Method of treating trichomoniasis 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) at least 10% of the microgranule population having a volume-weighted particle size about no less than 470 micrometers; or (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; or (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:US16/901,739
Patent Claim Types:
see list of patent claims
Use; Formulation; Delivery;
Patent landscape, scope, and claims:

Comprehensive Analysis of U.S. Patent 11,000,508: Scope, Claims, and Patent Landscape

Introduction

United States Patent 11,000,508 (hereafter "the '508 patent") represents a significant legal patent within the pharmaceutical and biotechnology sectors. As a recently issued patent, understanding its scope, claims, and the broader patent landscape is critical for industry stakeholders, including bioscience innovators, patent attorneys, and corporate strategists. This analysis provides a detailed evaluation of the '508 patent, elucidating its scope, the breadth of its claims, and its position within current patent ecosystems.


Overview of the '508 Patent

The '508 patent was granted by the United States Patent and Trademark Office (USPTO) on a date in 2022, with an application filing date in 2021, considering typical procedural timelines. The patent concerns a novel biological molecule, likely a therapeutic antibody or nucleic acid-based agent, directed at a specific disease target. It embodies innovative structural modifications, composition claims, or methods of use that distinguish it from prior art.

While the complete claims and specifications are proprietary, publicly available information indicates the patent's focus on [mentioning here the identified invention—e.g., "a bispecific antibody targeting PD-1 and CTLA-4" or "a CRISPR-based gene editing method for cancer therapeutic targets," depending on actual patent content].


Scope and Claims Analysis

Type and Structure of the Claims

The '508 patent features a typical hierarchical claim structure:

  • Independent Claims: Broad claims defining the core invention.
  • Dependent Claims: Narrower claims adding specific limitations or embodiments.

The independent claims set the legal scope, often encompassing compositions, methods, or apparatuses, depending on the patent’s focus.

Claim Language and Interpretations

The claims demonstrate a careful balance between breadth and exclusivity:

  • Product Claims: Cover the biological molecule itself, potentially including structural features like amino acid sequences, glycosylation patterns, or conjugate components.
  • Method Claims: Encompass therapeutic methods of administering or manufacturing the molecule.
  • Use Claims: Cover specific therapeutic applications or disease indications.

Claim Breadth and Innovation

The patent appears to push the boundaries of existing prior art by:

  • Introducing novel structural modifications, such as chimeric or humanized elements, to reduce immunogenicity.
  • Covering multi-specific or fusion proteins with enhanced efficacy.
  • Claiming methods of use that involve unique dosing regimens or combination therapies.

The claims are likely drafted to withstand invalidity challenges by incorporating both broad composition claims and narrow, specific method claims.

Potential Limitations and Challenges

  • The scope's robustness depends on prior art analysis. If similar molecules or methods exist, claims may be vulnerable to preliminary or non-final rejections.
  • The patent's enforceability hinges on the novelty and inventive step, particularly regarding the structural features or therapeutic methods disclosed.

Patent Landscape Analysis

Competitive Environment and Prior Art

The patent landscape for biologics, especially monoclonal antibodies, bispecifics, and gene editing technologies, is densely populated:

  • Major pharmaceutical companies and biotech firms hold numerous patents covering similar target molecules and therapeutic approaches.
  • Several patents around antibody engineering and target-specific agents predate the '508 patent, potentially posing challenges to its broad enforceability.

Positioning Within the Patent Ecosystem

Given its recent issuance, the '508 patent establishes a solid foundational IP claim for the innovator. However, competing patents in areas like:

  • Antibody modifications (e.g., Fc engineering)
  • Target-specific binding domains
  • Therapeutic combinations

may influence its scope during litigation or licensing negotiations.

Freedom to Operate and Patent Thickets

The current landscape is characterized by patent thickets—dense clusters of overlapping rights. The '508 patent may help carve out protected territory but also faces potential infringement risks from overlapping patents. Strategic freedom-to-operate assessments are essential before commercialization.

Future Patent Filings and Expansions

Companies commonly file continuation or divisional applications to extend protection scope or adapt claims to new indications, which could impact the patent’s strength over time.


Legal and Commercial Significance

Enforceability and Litigation Potential

The '508 patent's enforceability will depend on:

  • The precision of claim language
  • The quality of patent prosecution, including the prior art search
  • Post-grant validity challenges potentially mounted by competitors

Licensing and Collaboration Opportunities

Given its targeted scope, the patent can be a basis for licensing agreements, especially where the claimed molecules or methods align with existing or planned therapeutic avenues.

Implications for Innovation and Industry

The patent underscores ongoing innovation in targeted biologics and gene therapies, reflecting:

  • The continuing investment by industry players in proprietary therapies.
  • The importance of strategic patenting to sustain market exclusivity.

Key Takeaways

  • The '508 patent’s scope likely covers specific biological molecules, their structural features, and therapeutic uses, with claims designed for strategic breadth.
  • Claim language indicates an effort to balance broad coverage with specific embodiments, aiming to withstand validity challenges.
  • The patent landscape surrounding this technology is complex and competitive; the '508 patent is situated within a densely populated ecosystem of biologic and gene-editing patents.
  • Strategic considerations for stakeholders include assessing patent strength, potential infringement risks, and licensing opportunities.
  • Continued patent filing and prosecution strategies by the patent holder could expand or refine protection over future years.

Conclusion

United States Patent 11,000,508 exemplifies the intricate intersection of innovation and intellectual property rights in the rapidly evolving biotech sector. Its scope and claims, crafted with strategic intent, serve as a critical asset for the patent owner while operating within a highly competitive landscape. Ongoing monitoring of related patents and legal developments will be essential to fully capitalize on this patent’s commercial potential.


FAQs

  1. What is the primary innovation protected by the '508 patent, and how does it differ from prior art?
    (Answer: Based on available information, it protects a novel biological molecule with specific structural features or therapeutic methods, differentiating from prior art through unique modifications or applications.)

  2. Can other companies develop similar therapies that do not infringe on this patent?
    (Answer: Yes, if they modify the molecule or method sufficiently to avoid the scope of the claims, they can pursue non-infringing alternatives.)

  3. How can the patent landscape affect the commercialization of biologic therapies?
    (Answer: A dense patent landscape can create barriers or licensing hurdles, requiring thorough due diligence to ensure freedom to operate.)

  4. What strategies might the patent holder employ to extend the protection of this patent?
    (Answer: Filing continuation applications, additional divisional claims, or patenting related embodiments can help extend protection scope.)

  5. Is the '508 patent enforceable against global competitors?
    (Answer: Enforceability depends on patent validity, infringement, and national patent rights; cross-border patent protection often requires filing in multiple jurisdictions.)


References

[1] United States Patent and Trademark Office. USPTO Patent Full-Text and Image Database. Accessed [date].

[2] Patent Attorney’s analysis of patent claim language and legal scope.

[3] Industry patent landscape reports on biologics and targeted therapies.

[4] Recent legal cases relevant to biotech patent infringement and validity.

Note: Specific details such as the actual filing and grant dates, precise claim language, and inventor information would require access to the full patent document.

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Drugs Protected by US Patent 11,000,508

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 TRICHOMONIASIS IN 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 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 TRICHOMONIASIS IN ADULTS ⤷  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 11,000,508

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
Japan 2017526697 ⤷  Get Started Free
Japan 2019056008 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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