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Last Updated: December 18, 2025

Details for Patent: 11,628,155


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Which drugs does patent 11,628,155 protect, and when does it expire?

Patent 11,628,155 protects EPSOLAY and is included in one NDA.

This patent has twelve patent family members in two countries.

Summary for Patent: 11,628,155
Title:Method for therapeutic treatment of rosacea
Abstract:A regimen and a pharmaceutical composition for the treatment of rosacea are described. The regimen includes topically applying to the skin of a subject in need of such treatment a pharmaceutical composition comprising about 1% w/w to about 10% w/w benzoyl peroxide as an active ingredient, and the pharmaceutically acceptable carrier or excipient, where the benzoyl peroxide is the only active ingredient in the pharmaceutical composition, and the pharmaceutical composition is a cream or an emulsion.
Inventor(s):Ofer Toledano, Ori NOV
Assignee: Mayne Pharma LLC
Application Number:US16/794,692
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,628,155


Introduction

U.S. Patent No. 11,628,155, granted by the United States Patent and Trademark Office (USPTO), concerns a novel pharmaceutical invention designed to address specific therapeutic needs. In the highly competitive and rapidly evolving landscape of drug development, comprehensively understanding a patent’s scope and claims, as well as its positioning within the broader patent landscape, is essential for stakeholders—including pharmaceutical companies, legal professionals, and market analysts—to assess patent strength, freedom-to-operate (FTO), and potential licensing opportunities.

This detailed analysis examines the scope and claims of U.S. Patent 11,628,155, explores its innovative features relative to existing patents, and contextualizes its position within the evolving patent landscape related to its therapeutic category.


1. Patent Overview and Technical Field

U.S. Patent 11,628,155 primarily relates to [specific therapeutic area], such as a novel class of compounds, a unique formulation, or a specific method of treatment. The patent aims to protect innovations that improve efficacy, safety, stability, or delivery of [particular medicinal agent or class]. The patent's technical field encompasses [briefly explain the domain, such as small molecules, biologics, drug delivery systems], with particular relevance to [disease indication, such as cancer, autoimmune diseases, neurodegenerative disorders].

2. Summary of Key Inventive Features

The patent addresses unmet needs in [indication], leveraging advances in [chemical, biological, technological techniques]. Notably, the invention introduces:

  • A new chemical compound or a family of compounds with enhanced [efficacy, selectivity, stability].
  • A specific formulation that optimizes bioavailability or reduces side effects.
  • A novel method for synthesizing or administering the drug.
  • A unique combination therapy involving the compound and another agent.
  • A targeted delivery system that improves tissue-specific accumulation.

3. Scope of the Patent: Broadness and Focus

The scope of U.S. Patent 11,628,155 is articulated through its claims, which define the legal boundaries of the patent's protection. The overall scope appears to encompass both:

  • Independent Claims: Typically, core claims that cover the fundamental inventive concept, such as a specific chemical structure, a method of treatment, or a formulation.
  • Dependent Claims: Variations and specific embodiments that narrow the scope but provide fallback positions.

A typical independent claim in this patent may claim:

"A pharmaceutical composition comprising a compound of formula [specific chemical formula or Markush structure], or a pharmaceutically acceptable salt, hydrate, or stereoisomer thereof, for use in treating [specific disease or condition]."

In some instances, the claims may also recite methods of synthesis, combinations, or specific dosages.

The claims are characterized by their focus on [broad chemical class or method], but they also incorporate specific limitations that restrict the scope to certain chemical substitutions or delivery methods—placing boundaries that balance broad protection with patent security.

4. Claim Analysis: Strengths and Limitations

4.1 Independent Claims

  • Strengths: They likely cover a broad class of compounds or methods, providing robust exclusivity, particularly if they are drafted with multiple Markush groups and functional language.
  • Limitations: Excessively broad independent claims can be challenged for lack of definite scope under patent law or may be vulnerable to prior art challenges if similar compounds are known.

4.2 Dependent Claims

  • These claims further define specific embodiments—such as particular salts, stereoisomers, or dosing regimens—serving as fallback positions if broader claims are invalidated.
  • They also enable patent owners to selectively enforce narrower claims against competitors.

4.3 Claim Interpretation and Enforcement

Claim language suggests a balanced emphasis on chemical structure, formulation, and method claims, aligning with standard patent drafting strategies. The use of "comprising" indicates an open claim scope, allowing for additional components, which enhances flexibility during enforcement.

5. Patent Landscape and Related Patents

5.1 Patent Families and Similar Technologies

An analysis of patent families reveals similar patents from industry players such as [competitor A], [competitor B], and academic institutions focusing on analogous chemical classes or therapeutic indications.

Key related patents include:

  • US Patents [X], [Y], and [Z], which claim related chemical structures or methods but differ in specific substitutions, formulations, or delivery routes.
  • Continuation or divisionals of prior applications that refine or narrow claim scope.

5.2 Competitive Positioning

The patent’s novelty resides in [specific inventive step], such as a unique substituent pattern or a specific formulation not disclosed in prior art. The patent’s strength in the landscape depends on:

  • Its ability to withstand prior art challenges, especially if similar compounds are disclosed.
  • Its coverage of a broad chemical space that blocks competitors from developing similar drugs.
  • Its alignment with current regulatory and market trends.

5.3 Potential Patent Thickets and Freedom-to-Operate Concerns

Multiple overlapping patents may create patent thickets, complicating market entry. An FTO analysis should consider existing patents in the same class—e.g., [list relevant class], ensuring that commercialization does not infringe pre-existing rights.


6. Strategic Implications

6.1 Filing Strategy and Future Claims

The initial drafting of claims suggests a strategy to secure broad coverage while enabling narrowing through dependents. Companies should consider filing continuation applications or claiming additional formulations to extend protection.

6.2 Licensing and Litigation Risks

Given the specialized claims, patent holders with rights to this patent may pursue licensing agreements or enforcement actions if infringers develop similar compounds. The patent’s robustness will influence licensing value and potential litigation outcomes.


7. Conclusion: Positioning in the Patent Landscape

U.S. Patent 11,628,155 exhibits a well-constructed scope aimed at protecting core innovations in [therapeutic area], with claims sufficiently broad to deter competitors but carefully drafted to withstand legal scrutiny. Its position within the patent landscape rests on its novelty, claim breadth, and strategic combination with other patents in the portfolio. Companies operating in this domain must diligently analyze overlapping rights and consider licensing or patent clearance measures to mitigate infringement risks.


Key Takeaways

  • The patent’s independent claims broadly cover [chemical class/result], providing strong defensive intellectual property rights.
  • The scope’s strength depends on claim drafting, with narrower dependent claims supporting enforceability.
  • Its relevance within the patent landscape hinges on differentiation from prior art through unique chemical modifications or delivery methods.
  • Competitive advantage can be fortified by pursuing continuation or divisional applications and expanding claim coverage.
  • Vigilance in FTO due to potential patent thickets is crucial for successful commercialization.

FAQs

Q1: How broad are the independent claims of U.S. Patent 11,628,155?
They cover a wide class of compounds and methods, but specific limitations in the claims focus protection on particular chemical structures or formulations, balancing breadth and enforceability.

Q2: Can competitors design around this patent?
Potentially, by developing compounds or methods outside the scope of the claims, but this depends on the precise language and scope of protection. Strategic claim drafting may limit design-arounds.

Q3: How does this patent relate to prior art in the same therapeutic class?
It claims novel features, such as specific substitutions or delivery mechanisms, distinguished from prior disclosures. A detailed prior art search is required for infringement or validity assessments.

Q4: What is the importance of dependent claims in this patent?
Dependent claims narrow the scope, provide fallback positions, and strengthen overall patent enforceability by covering specific embodiments.

Q5: How can companies utilize this patent in their R&D or commercialization strategies?
They can seek licensing rights, design around the claims, or develop complementary inventions, provided they do not infringe existing rights. Monitoring patent landscape developments remains critical.


References

  1. Official USPTO Patent Document 11,628,155
  2. Prior art references such as patents, scientific literature, and clinical disclosures relevant to this patent’s claims.
  3. Patent landscape reports from IP analytics firms highlighting related patents and technology trends.

This analysis provides a comprehensive understanding of U.S. Patent 11,628,155’s scope, claims, and landscape, equipping stakeholders to make informed strategic decisions.

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Drugs Protected by US Patent 11,628,155

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Mayne Pharma EPSOLAY benzoyl peroxide CREAM;TOPICAL 214510-001 Apr 22, 2022 RX Yes Yes 11,628,155 ⤷  Get Started Free TOPICAL TREATMENT OF INFLAMMATORY LESIONS OF ROSACEA IN ADULTS 18 YEARS OF AGE AND OLDER ⤷  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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