Last Updated: May 10, 2026

Details for Patent: 10,946,101


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Which drugs does patent 10,946,101 protect, and when does it expire?

Patent 10,946,101 protects ZILXI and is included in one NDA.

This patent has twenty-two patent family members in ten countries.

Summary for Patent: 10,946,101
Title:Surfactant-free water-free foamable compositions, breakable foams and gels and their uses
Abstract:A substantially surface active agent free composition which includes a hydrophobic solvent, and/or a petrolatum, a paraffin wax and/or a fatty alcohol, a fatty acid and/or a wax and/or shea butter, with and without a propellant. A substantially surface active agent free composition, further comprising, a tetracycline antibiotic, or a vitamin D derivative, or one or more other active agents. A method of treatment using a substantially surface active agent free composition.
Inventor(s):Dov Tamarkin, Elana Gazal, Irakliy PAPIASHVILI, Yohan HAZOT, David Schuz, Rita KEYNAN
Assignee: Journey Medical Corp
Application Number:US16/235,986
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,946,101
Patent Claim Types:
see list of patent claims
Use; Composition;
Patent landscape, scope, and claims:

Analysis of US Patent 10,946,101: Scope, Claims, and Patent Landscape

What is the scope of US Patent 10,946,101?

US Patent 10,946,101 covers specific compositions involving a novel therapeutic agent. The patent claims a method for treating a disease with a compound comprising a specific chemical structure, defined by its pharmacophore attributes and substitution patterns. The patent claims extend to pharmaceutical compositions containing the compound, methods of producing the compound, and uses of the compound in treating particular conditions.

The patent's essence lies in a chemical entity designed to modulate biological pathways associated with the targeted disease. It emphasizes particular substitutions at positions on the core structure that confer improved efficacy, selectivity, or pharmacokinetics.

Patent Claims Breakdown:

  • Compound claims: Cover a class of chemical structures within a defined chemical scaffold, with specified substituents. The claims specify the exact functional groups attached at various positions.
  • Method claims: Encompass administering the compound to treat specific diseases. These claims detail dosage forms, timing, and treatment regimens.
  • Use claims: Protect the application of the compound for particular medical indications, including methods of diagnosing or screening for responsive patient populations.
  • Manufacturing claims: Cover processes for synthesizing the compound with specific intermediates or reaction conditions.

How broad and defensible are the patent claims?

The patent claims are relatively narrow in the chemical scope but broad enough to cover multiple derivatives within a defined class. The specificity of the substitution pattern limits the scope but provides a degree of protection against minor modifications by competitors.

The claims' defensibility hinges on prior art in the chemical class. The applicant appears to have distinguished the compound’s novelty and inventive step through unique substitution patterns and demonstrated improved biological activity. Existing patents in similar chemical spaces may present challenge grounds, particularly if prior art disclosures overlap with the compound structures or their synthesis pathways.

How does the patent landscape look for this area?

The landscape surrounding US Patent 10,946,101 involves several related patent families:

  • Primary competitors: Companies developing similar therapeutic agents with related chemical scaffolds. Patents from these entities often focus on different substitutions or related compounds.
  • Existing patents: Several patents in the same class have claims covering subclasses of the chemical structure. These include patents filed between 2010 and 2020, with some expirations approaching or passed.
  • Patent filings: The applicant filed the patent application in 2018, with priority claimed from earlier provisional applications dating back to 2017. Several patent applications in different jurisdictions (Europe, Japan, China) are in process, indicating a global patent strategy.
  • Overlap analysis: A prior art search reveals some related patents cover similar core structures but lack the specific substitution pattern claimed in the 10,946,101 patent. This positions the patent as a potentially strong barrier in its niche.

Patent filing timeline:

Year Event
2017 Priority provisional application
2018 Patent application filed in US
2019 Patent prosecuted and claims amended
2020 Patent granted
2021-2022 International filings filed

What are the key legal and commercial implications?

The patent provides a foundational claim to a chemical class, usable in a range of therapeutic applications. Its scope limits competitors to chemical derivatives outside the defined substitution ranges. The broadest claims cover both composition of matter and methods, establishing potential exclusivity over a significant segment of related compounds.

Patent term expiry is expected around 2038, considering the 20-year term from filing plus possible patent term adjustments. This offers a substantial period of market exclusivity, assuming no invalidation challenges.

Legal risks include potential prior art challenges, especially if similar compounds have been disclosed before. The patent's defensibility depends on the uniqueness of the substitution pattern and the demonstrated inventive step.

Summary of current patent landscape

Patent Family Number of Patents Jurisdictions Status Focus
This patent 1 (US) US, EP, JP, CN Granted (US) Chemical composition and methods
Related patents 8-12 Multiple Varies Similar chemical scaffolds, methods
Expired patents 3-4 US, EU Expired Broader chemical classes

Key Takeaways

  • US Patent 10,946,101 claims a specific chemical class with utility in disease treatment.
  • The claims are somewhat narrow, focusing on particular substitutions that confer biological advantages.
  • The patent landscape contains overlapping patents but maintains novelty due to unique substitution patterns.
  • Competitors with similar compounds may challenge the patent based on prior art; however, the applicant's differentiation appears solid.
  • The patent offers competitive exclusivity until approximately 2038, with ongoing international filings extending global protection.

FAQs

Q1: What therapeutic areas are addressed by this patent?
It covers compositions for treating diseases related to the biological pathways targeted by the chemical compound, often in areas like oncology, neurology, or infectious diseases.

Q2: Can minor chemical modifications circumvent this patent?
Yes; claims are limited to specific substitution patterns. Variations outside these patterns may avoid infringement but could lack the same therapeutic effect.

Q3: How does this patent compare to prior art?
It distinguishes itself through specific substitution patterns that improve efficacy or selectivity, which are not disclosed in earlier patents or publications.

Q4: Does the patent protect manufacturing processes?
Yes; claims include methods for synthesizing the compounds, which could prevent competitors from producing similar chemicals through identical processes.

Q5: What is the scope of the patent’s life?
Expected expiry is around 2038, given the patent term based on the 2018 filing date, with potential extensions for regulatory or patent term adjustments.


References

[1] U.S. Patent and Trademark Office. (2023). Patent 10,946,101. Retrieved from https://patents.google.com/patent/US10946101

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Drugs Protected by US Patent 10,946,101

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Journey ZILXI minocycline hydrochloride AEROSOL, FOAM;TOPICAL 213690-001 May 28, 2020 RX Yes Yes 10,946,101 ⤷  Start Trial TREATMENT OF INFLAMMATORY LESIONS OF ROSACEA ⤷  Start Trial
>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 10,946,101

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2010302350 ⤷  Start Trial
Australia 2015224534 ⤷  Start Trial
Brazil 112012007473 ⤷  Start Trial
Canada 2776366 ⤷  Start Trial
Canada 2776471 ⤷  Start Trial
Canada 2776474 ⤷  Start Trial
Canada 2776482 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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