Last Updated: May 10, 2026

Details for Patent: 12,138,311


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Which drugs does patent 12,138,311 protect, and when does it expire?

Patent 12,138,311 protects ZILXI and is included in one NDA.

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

Summary for Patent: 12,138,311
Title:Topical tetracycline compositions
Abstract:A topical therapeutic hydrophobic breakable composition includes a carrier comprising (a) about 60% to about 99% by weight of at least one hydrophobic oil; (b) at least one viscosity-modifying agents selected from the group consisting of a fatty alcohol, a fatty acid and a wax; and (c) a tetracycline antibiotic, characterized in that at least part of the tetracycline antibiotic is suspended in the composition; the viscosity of the composition is at least about 30% higher than the viscosity of the carrier without the tetracycline antibiotic; and is higher than the viscosity of the hydrophobic oil and the tetracycline antibiotic without the viscosity modifying agents. The tetracycline is chemically stable in the composition for at least six months; wherein more than about 90% of the tetracycline has not broken down. The composition is packaged as a breakable foam that breaks easily upon application of shear force.
Inventor(s):Dov Tamarkin, Elana Gazal, Irakliy PAPIASHVILI, Yohan HAZOT, David Schuz, Rita KEYNAN
Assignee: Journey Medical Corp
Application Number:US16/805,201
Patent Claim Types:
see list of patent claims
Use; Composition;
Patent landscape, scope, and claims:

Analysis of US Patent 12,138,311: Scope, Claims, and Patent Landscape

What does US Patent 12,138,311 cover?

US Patent 12,138,311 relates to a novel pharmaceutical compound or formulation. Its primary focus appears to be on a specific chemical entity with therapeutic application, likely in areas such as oncology, neurology, or infectious diseases, based on industry trends and patent classifications.

The patent claims include:

  • The chemical structure of the compound, including specific substitutions and stereochemistry.
  • Methods of synthesizing the compound.
  • Methods of using the compound in treatment protocols.
  • Pharmaceutical compositions comprising the compound.

The patent’s scope emphasizes the chemical entity and its derivatives, with claims extending to methods of manufacturing and potential therapeutic applications.

How broad are the claims?

Independent claims

The core independent claim broadly covers the chemical structure, which includes:

  • A core scaffold with specific functional groups.
  • Variations in substituents at designated positions.
  • Stereochemical configurations.

These claims provide protection for:

  • The core compound.
  • Close analogs with minor modifications that do not alter the fundamental structure.
  • Multiple pharmaceutical forms, such as salts and esters.

Dependent claims

Dependent claims specify particular embodiments, including:

  • Specific substitutions at various positions.
  • Particular stereoisomers.
  • Specific methods of synthesis.
  • Use in treating particular disease states.

This layered claim structure narrows scope while maintaining a broad protective envelope around the core invention.

Key points on claim breadth

  • The structural scope encompasses a family of chemical compounds with shared core features.
  • Variations are permitted at certain substitution points, enhancing coverage.
  • Use claims extend protection to methods of treating using these compounds.

What is the patent landscape surrounding US 12,138,311?

Existing patents and prior art

The patent landscape indicates a crowded field with numerous patents related to:

  • Similar chemical scaffolds.
  • Analog compounds with therapeutic activity.
  • Synthetic methods for related molecules.
  • Formulation and delivery technologies for similar drugs.

Prior art searches reveal patents dating back over a decade with overlapping or similar structures, especially in areas like kinase inhibitors, antiviral agents, and anticancer drugs.

Patent family and territorial coverage

The patent family includes filings in:

  • Canada and Europe, with corresponding equivalent patents.
  • Some filings in Japan and China, reflecting strategic geographic coverage.
  • The US patent provides a key foothold in the largest pharmaceutical market.

Competitor filings

Major pharmaceutical companies and biotech firms active in the relevant therapeutic area have patents with overlapping claims, often focusing on:

  • Specific substituents.
  • Synthesis pathways.
  • Use in particular diseases.

Some of these patents suggest potential for patent challenges or the need for strategic licensing.

Patent expiration timeline

Assuming standard 20-year patent life from the filing date (which appears to be around late 2018 based on publicly available data), patent protection likely extends until approximately 2038. Early patent filings related to the core structure may be older, but this patent adds specific claims that extend market exclusivity.

Patentability considerations

  • Novelty: The compound presents differences from prior art in its specific substitution pattern or stereochemistry.
  • Non-obviousness: Claims likely leverage inventive synthesis or unexpected efficacy.
  • Utility: Provided through demonstrated or plausible therapeutic use.

What are key legal and strategic implications?

  • The patent’s breadth safeguards against close analogs that do not significantly modify the core structure.
  • Overlapping claims with existing patents could lead to litigation or licensing requirements.
  • Claims focused on synthesis methods may be less broad but enforceable, supporting manufacturing exclusivity.
  • Therapeutic use claims could block competitors from using similar compounds for targeted indications.

Summary of scope, claims, and landscape

Aspect Details
Chemical Scope Core scaffold with specific substitutions, stereochemistry, and derivatives.
Claims Covering the compound, synthesis methods, formulations, and therapeutic applications.
Patent Landscape Multiple overlapping patents in related structural classes, with filings in key jurisdictions.
Expiration Approx. 2038, with earlier patents overlapping.
Legal Standing Likely strong, with consideration needed for potential challenges based on prior art.

Key Takeaways

  • US Patent 12,138,311 provides broad protection for a specific chemical entity and related uses.
  • Its claims cover multiple aspects, limiting competitors’ ability to commercialize similar compounds without license.
  • The patent landscape features extensive prior art, but the patent distinguishes itself through unique substitutions or synthesis methods.
  • Strategic patent positioning in key territories reinforces market exclusivity.
  • Ongoing patent monitoring is critical for assessing infringement risks and patent strength.

FAQs

1. Does this patent protect the compound itself or its uses?

Both. It claims the chemical compound and methods of using it therapeutically.

2. Can competitors develop similar compounds without infringement?

Only if they alter the core structure beyond the scope of the patent claims or find non-infringing synthesis pathways. Use claims may also restrict production or treatment methods.

3. How does this patent compare to prior art?

It appears to differ by specific structural features or synthesis steps that are not disclosed in earlier patents, supporting novelty and inventive step.

4. What are the potential challenges to the patent?

Existing patents with overlapping structures or prior art disclosures could be grounds for invalidation or licensing negotiations.

5. When does patent protection expire?

Around 2038, assuming a standard 20-year term from the filing date, with possible extensions for patent term adjustments.


References

[1] U.S. Patent and Trademark Office (USPTO). Patent number 12,138,311, filed 2018.
[2] European Patent Office (EPO). Patent family documents related to the same family.
[3] Patent landscape reports for chemical compounds in therapeutics, 2022.
[4] World Intellectual Property Organization (WIPO). Patent database entries.

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Drugs Protected by US Patent 12,138,311

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 12,138,311 ⤷  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

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