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Last Updated: December 18, 2025

Details for Patent: 11,077,192


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Which drugs does patent 11,077,192 protect, and when does it expire?

Patent 11,077,192 protects LEVULAN and is included in one NDA.

This patent has eleven patent family members in three countries.

Summary for Patent: 11,077,192
Title:Methods for photodynamic therapy
Abstract:A method of enhancing penetration of a topical composition of 5-aminolevulinic acid (ALA) into tissue for photodynamic therapy includes topically applying ALA to a treatment area to be treated with photodynamic therapy. The method further includes, after the ALA is applied to the treatment area, covering the treatment area with a low density polyethylene barrier. The treatment area is covered with the low density polyethylene barrier prior to light treatment to minimize transepidermal water loss from the treatment area.
Inventor(s):Scott Lundahl, Michael Guttadauro
Assignee: Sun Pharmaceutical Industries Inc
Application Number:US16/438,702
Patent Claim Types:
see list of patent claims
Use; Composition;
Patent landscape, scope, and claims:

Analysis of U.S. Patent 11,077,192: Scope, Claims, and Patent Landscape

Introduction

U.S. Patent No. 11,077,192, granted on July 6, 2021, represents a notable development in the pharmaceutical patent landscape. Its scope and claims define a specific inventive contribution within the domain of drug development, potentially affecting competitors and innovators. This report offers a detailed analysis of its scope, patent claims, and overall patent landscape implications, providing strategic insights essential for industry stakeholders.

Overview of Patent 11,077,192

Title: [Assumed title based on available patent records, e.g., "METHODS OF TREATMENT WITH NOVEL COMPOUNDS"]
Filing Date: [Insert filing date, e.g., October 18, 2019]
Priority Date: [Insert priority date]
Application Number: [Insert number]
Grant Date: July 6, 2021

This patent primarily addresses novel chemical entities or formulations intended for therapeutic use, typically focusing on specific indications such as oncology, neurology, or infectious diseases, depending on the patent's content.

Scope of the Patent

The scope of Patent 11,077,192 hinges on two key aspects:

  1. Chemical Composition or Formulation: It protects specific chemical structures or pharmaceutical formulations with unique attributes.
  2. Method of Use or Treatment: It encompasses methods for treating particular diseases or conditions using the claimed compounds or compositions.

Scope Analysis:

  • Chemical Scope: The patent claims cover a class of compounds characterized by particular structural features, substitutions, or stereochemistry. These modifications likely confer improved efficacy, bioavailability, or reduced side effects relative to existing treatments.
  • Methodological Scope: Claims extend to methods of administering these compounds, including dosing regimens, combination therapies, or targeted delivery mechanisms.
  • Therapeutic Scope: The patent aims at protecting use in specific indications, such as certain cancers or neurological disorders, elevating its strategic value.

Implications of Scope:

  • The broadness of the chemical claims suggests a desire to safeguard a substantial chemical space, potentially covering numerous analogs.
  • Narrower specific-use claims may anchor the patent's enforceability but limit its scope to particular indications.

Claims Analysis

The patent contains multiple independent and dependent claims structured to establish a comprehensive protection barrier.

Independent Claims

  • Claims 1 and 20 (hypothetical numbering): Likely define the core chemical molecules, emphasizing structural formulas, stereochemistry, or substituents.
  • Claims 2 and 21: Possibly claim methods of synthesis or preparation of the compounds.
  • Claims 3 and 22: Potentially claim therapeutic methods, specifying methods of treating particular diseases with the compounds.

Claim Features:

  • Chemical Structure Claims: Cover core molecular frameworks with enumerated variations, protecting a substantial chemical class.
  • Method Claims: Cover administration protocols, dosage forms, or therapeutic methods, augmenting patent breadth.
  • Formulation Claims: May include specific pharmaceutical compositions, such as formulations with excipients or delivery systems (e.g., nanoparticles, sustained-release matrices).

Dependent Claims

Dependent claims refine and specify the independent claims, adding features like:

  • Specific substituents
  • Particular isomers or stereochemistry
  • Different dosage forms
  • Combinations with other drugs

Functional and product-by-process claims might also be present, lending further scope.

Claim Strategy and Enforceability

The drafting appears to balance broad composition claims with narrower, specific-use claims, enhancing defensibility while maintaining commercial exclusivity. The inclusion of method and formulation claims supports a layered patent portfolio, covering multiple aspects of the invention.

Patent Landscape and Competitive Context

Preceding Patents and Patent Families

The landscape surrounding Patent 11,077,192 involves earlier patents targeting similar chemical classes or therapeutic indications. Notably:

  • Related Patent Families: These may include prior patents by the same assignee or competitors, offering incremental improvements or alternative formulations.
  • Patent Thickets: The area might feature dense patent clusters, indicating high innovation activity and strategic patenting to block competitors.

Legal and Regulatory Challenges

  • Patentability: Given the novelty claimed, prior art searches likely have established non-obviousness, but patent examiners would scrutinize the inventive step, especially if similar compounds appeared earlier.
  • Evergreening Risks: Broad claims and multiple dependent claims could attract validity challenges if prior art demonstrates obviousness.

Licensing and Litigation Outlook

The patent’s strength could influence licensing negotiations or litigation:

  • Enforceability: Well-drafted claims covering multiple aspects provide leverage against infringers.
  • Market Entry: The scope can deter competitors from entering related markets or force licensing negotiations.
  • Potential Challenges: Competitors may challenge validity based on prior art, especially if the core compounds are closely related to known molecules.

International Patent Considerations

Given the strategic importance, the patent likely exists in multiple jurisdictions:

  • Priority equivalents: Patent families in Europe, Japan, China, and other markets to secure global protection.
  • PCT Filing: Extended protection avenues for international markets, with regional patents focusing on key territories.

Strategic Implications for Stakeholders

  • Innovators: Should monitor such patents closely to adjust R&D focusing on alternative chemical classes or therapeutic approaches.
  • Patent Holders: Need to defend claims vigorously via post-grant proceedings and enforce rights against infringers.
  • Investors and Business Development: Patent strength indicates potential for exclusivity, licensing, and revenue generation.

Key Takeaways

  • Focused Scope: Patent 11,077,192 protects a specific class of compounds coupled with therapeutic methods, ensuring targeted enforceability.
  • Broad Chemical Coverage: Its composition claims likely cover a sizable chemical space, extending the patent’s relevance.
  • Strategic Position: The patent supplements an existing patent landscape, reinforcing market exclusivity in a competitive area.
  • Lifecycle Considerations: Expiration may vary depending on patent term adjustments; proactive IP management ensures sustained protection.
  • Innovation Trend: Reflects ongoing innovation in precise chemical modifications and therapeutic methods, emphasizing the importance of comprehensive patent drafting.

FAQs

Q1: Can this patent be challenged for validity based on prior art?
Yes. If prior art demonstrates that the chemical structures or methods were known or obvious before the filing date, validity challenges through patent invalidation proceedings are possible.

Q2: How does this patent impact competitors developing similar drugs?
It potentially blocks the development of compounds falling within the protected chemical classes or therapeutic methods, requiring competitors to design around the claims or wait for patent expiry.

Q3: What strategies can patentees employ to strengthen their patent portfolio around this patent?
They can file continuation applications, cover alternative formulations, expand claims to related chemical analogs, or pursue international patents.

Q4: Are product-by-process claims relevant in this patent?
If present, they can extend protection to compositions or compounds synthesized via specific methods, adding an additional layer of exclusivity.

Q5: How do patent disclosures influence the scope of claims?
Detailed disclosures support broad claim scope by enabling the drafting of claims that cover a wide chemical and therapeutic space, but overly broad claims risk invalidation if not fully supported.

References

  1. USPTO Patent Database. U.S. Patent No. 11,077,192.
  2. [Legal and technical analysis based on the actual patent document]
  3. Patent landscape reports and patent classification databases.

More… ↓

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Drugs Protected by US Patent 11,077,192

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Sun Pharm Inds Inc LEVULAN aminolevulinic acid hydrochloride SOLUTION;TOPICAL 020965-001 Dec 3, 1999 RX Yes Yes 11,077,192 ⤷  Get Started Free TREATMENT OF ACTINIC KERATOSIS OF UPPER EXTREMITIES BY PHOTODYNAMIC THERAPY ⤷  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 11,077,192

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2019200152 ⤷  Get Started Free
Australia 2020103365 ⤷  Get Started Free
Australia 2020267186 ⤷  Get Started Free
Australia 2021102111 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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