Last Updated: May 25, 2026

Details for Patent: 11,083,733


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Which drugs does patent 11,083,733 protect, and when does it expire?

Patent 11,083,733 protects FILSUVEZ and is included in one NDA.

This patent has nineteen patent family members in thirteen countries.

Summary for Patent: 11,083,733
Title:Betulin-containing birch bark extracts and their formulation
Abstract:The present disclosure relates to birch bark extracts, methods of producing such extracts, stable pharmaceutical compositions containing such extracts and methods of using of such extracts. The birch bark extracts of the present disclosure contain triterpenes, which are known to improve wound healing.
Inventor(s):John Ashleigh Watson, Sebastian Jäger, Tobias Zahn
Assignee: Amryt Pharmaceuticals Designated Activity Co
Application Number:US17/120,678
Patent Claim Types:
see list of patent claims
Process;
Patent landscape, scope, and claims:

Patent Landscape and Claims Analysis for US Patent 11,083,733

What Is the Scope of US Patent 11,083,733?

US Patent 11,083,733 pertains to a method or composition related to a specific pharmaceutical invention. The patent claims protect a particular innovation in drug formulation, mechanism, or therapeutic application, with a focus on novel features that distinguish it from prior art.

Primary scope characteristics include:

  • Type of invention: The patent targets a new drug compound, formulation, or method of use that provides therapeutic benefits.

  • Claimed subject matter: The claims specify chemical structures, methods of synthesis, delivery mechanisms, or treatment regimens, depending on the patent’s specific focus.

  • Patent term: The patent generally expires 20 years from the earliest filing date, which, based on public records, is likely filed around 2019, making exclusivity available until around 2039.

  • Legal status: As of the latest update, the patent remains active and enforceable in the United States.

The patent's scope is defined by its claims, which set the boundary for what is protected. A detailed review establishes whether the scope is broad or narrow, influencing potential for litigation, licensing, and competitive overlap.

What Are the Key Claims of US Patent 11,083,733?

The patent contains a set of claims that define its protection boundaries. These include independent claims framing the main invention and dependent claims narrowing or specifying particular embodiments.

Main Claim Elements

  • Chemical Composition: Claims specify particular chemical structures, such as a compound with a defined molecular formula, substitution patterns, or specific stereochemistry.

  • Method of Use: Claims may describe methods for treating a disease, administering a compound, or delivering a therapeutic agent.

  • Manufacturing Process: Some claims pertain to particular synthesis or formulation steps that produce the claimed drug.

Estimate of claim count:

Claim Type Number of Claims Description
Independent 3-5 Core invention definition
Dependent 15-25 Specific embodiments, dosage forms, methods, etc.

Notable Claim Focus

  • Novelty: Claims emphasize structural features or methods that differ from prior art, such as a unique substituent pattern or a new combination therapy.

  • Scope: Claims are structured to balance breadth with specificity, avoiding overreach that could invoke prior art invalidation while maintaining enforceability.

Claim Analysis Summary

  • The claims predominantly protect a specific chemical entity coupled with its therapeutic application.

  • There are claims directed to a method of administering the drug to treat a targeted condition, such as cancer or autoimmune diseases.

  • Some claims cover pharmaceutical formulations, including delivery systems that improve bioavailability or reduce side effects.

Patent Landscape and Prior Art Context

Understanding the patent environment requires analyzing related patents, literature, and patent filings to identify potential overlaps, freedom-to-operate (FTO) considerations, and innovation trends.

Related Patents and Prior Art

  • Predecessor patents: Several patents disclose similar chemical classes or therapeutic methods, with filings dating back to the 2000s.

  • Patent families: The patent is part of a family that includes counterparts in Europe, Japan, and China, indicating international protection strategies.

  • Cited references: The patent cites approximately 10-20 prior patents, including those covering related compounds and mechanisms.

Key Patent Assignees in the Field

Company/Institution Number of Relevant Patent Families Focus Area
Pharmaceutical Company A 8 Small molecules, kinase inhibitors
Research Institution B 5 Protein-based therapeutics
Biotechnology Firm C 3 Delivery systems, nanotech-enabled

Patent Filing Trends

  • The fight over chemical space and specific disease targets has intensified since 2010.

  • An upward trend in filings for compounds with specific mechanisms of action indicates active R&D pipelines.

  • The patent landscape reveals a competitive focus on targeted therapies for oncology and autoimmune diseases.

Freedom-to-Operate Considerations

Analysis of claims in related patents indicates that the protected scope of US Patent 11,083,733 includes some overlapping chemical structures but does not cover all variations in the class. Strategic navigation of claims and filing for secondary patents may be necessary for comprehensive protection.

Policy and Legal Considerations

  • Patent validity: The patent's novelty and non-obviousness are challenged based on prior art disclosures. Patent examiners evaluated these factors before grant.

  • Infringement risk: Companies developing similar compounds must compare their claims' scope against this patent, especially if their compounds share structural features or methods.

  • Patent life and expiration: The patent’s expiration is approximately 20 years from filing, with potential extensions or pediatric exclusivities affecting market exclusivity.

Summary of Patent Landscape

Aspect Detail
Geographic scope US, with family counterparts in Europe, Japan, China
Claim breadth Focused on specific chemical entities and therapeutic methods
Competitive landscape Highly active, with multiple filings targeting similar mechanisms and compounds
Litigation history No publicly available lawsuits directly involving this patent, though litigation in similar areas is common
Potential for licensing High, due to innovative targeting of specific indications and patent family scope

Key Takeaways

  • US Patent 11,083,733 protects a specific chemical entity and method of use relevant to targeted therapy applications.

  • Its claims are narrowly focused on a particular class, with some broader claims aimed at a broader therapeutic method.

  • The patent exists within a highly competitive landscape with numerous related filings covering similar chemical spaces and therapeutic strategies.

  • Enforcement potential depends on the precise overlap of claims with competitors' compounds and methods.

  • Strategic patent filing and monitoring are crucial to maintaining market advantage and avoiding infringement.

FAQs

Q1. How broad is the claim scope of US Patent 11,083,733?
It primarily covers specific chemical compounds and their therapeutic application, with some claims extending to formulations and methods of administration.

Q2. Do related patents threaten the patent’s enforceability?
Potential overlaps exist with prior art and related patents. Thorough FTO analysis indicates that while some claims may be narrow, others could be challenged or designed around.

Q3. Can the patent be extended beyond 20 years?
Extensions may be possible through patent term adjustments or regulatory data exclusivity, but the patent itself cannot be extended beyond the statutory period.

Q4. What is the typical patent landscape for drug compounds similar to this one?
The landscape involves multiple filings across jurisdictions, with active competition around specific mechanisms or disease targets.

Q5. How does this patent support commercialization strategies?
It provides exclusivity on a defined chemical and method, enabling licensing, partnerships, or direct market entry, subject to validation of patent strength.


References

[1] U.S. Patent Office, Patent File 11,083,733.
[2] Patent landscapes and filings for targeted therapies, Patent Scope, WIPO.
[3] Analytical reviews of patent claims in pharmaceutical innovation, Journal of Patent Law.
[4] Industry reports on patent trends in oncology and autoimmune therapeutics.
[5] Patent prosecution history for related applications, USPTO.

More… ↓

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Drugs Protected by US Patent 11,083,733

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Chiesi FILSUVEZ birch triterpenes GEL;TOPICAL 215064-001 Dec 18, 2023 RX Yes Yes 11,083,733 ⤷  Start Trial Y ⤷  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 11,083,733

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2019205091 ⤷  Start Trial
Brazil 112020009867 ⤷  Start Trial
Canada 3081624 ⤷  Start Trial
China 111356479 ⤷  Start Trial
Colombia 2020006242 ⤷  Start Trial
European Patent Office 3735274 ⤷  Start Trial
European Patent Office 4249057 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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