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Last Updated: December 18, 2025

Details for Patent: 12,296,011


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Which drugs does patent 12,296,011 protect, and when does it expire?

Patent 12,296,011 protects LEVULAN and is included in one NDA.

This patent has eleven patent family members in three countries.

Summary for Patent: 12,296,011
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:US18/313,162
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 12,296,011
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 12,296,011


Introduction

U.S. Patent 12,296,011 (hereafter "the '011 patent") represents a significant intellectual property asset within the pharmaceutical domain. As part of strategic patent analysis, understanding the scope, claims, and relevant patent landscape of this patent is critical for stakeholders involved in drug development, licensing, or litigation. This report offers a comprehensive, in-depth review of the '011 patent, focusing on its claims, breadth, and positioning within the existing patent landscape.


Patent Overview and Technical Field

The '011 patent, granted by the United States Patent and Trademark Office (USPTO), pertains to a novel chemical invention—specifically, a compound, formulation, or method relevant to therapeutics. The patent's primary technical domain is likely related to an innovative class of pharmaceutical compounds, their synthesis, or clinical applications.

While the specific title and abstract are not provided here, typical claims in such patents focus on chemical structures, pharmaceutical formulations, methods of manufacturing, and therapeutic uses. This patent likely claims an exclusive right over a unique molecule or method with potential biomedical utility.


Scope of the Patent

The scope of a patent hinges on the language of its claims, which define the boundaries of legal protection. In the '011 patent, the scope appears to encompass:

  • Chemical Composition Claims: Covering specific molecular structures, derivatives, or analogs of a core compound.
  • Method of Synthesis: Including processes for preparing the claimed compounds.
  • Pharmacological Use: Claims directed to treating particular diseases or conditions using the compounds.
  • Formulation and Delivery: Encompassing pharmaceutical formulations, dosage forms, or delivery mechanisms.

The patent likely contains multiple independent claims, each directed at different aspects of the invention, and numerous dependent claims that specify particular embodiments or variants.

In terms of breadth, the patent may employ both narrow and broad claims. Broad claims aim to protect a wide class of compounds or uses, creating substantial freedom-inventing barriers, while narrower dependent claims serve to reinforce protection around specific embodiments.


Claims Analysis

Independent Claims

The core of the patent's protection is typically embodied in the independent claims, which set out the broadest scope. Examples might include:

  • Chemical structure claim: A claim covering a chemical scaffold with certain substituents, such as "A compound of formula I, wherein R1, R2, and R3 are as defined..."
  • Use claim: A claim for a method of treating a disease employing the compound.
  • Method of synthesis: Covering the process to produce the compound with particular reaction steps.

Suppose the claims specify a particular arrangement of functional groups ensuring activity against a disease. The scope depends on how generic the claim language is—more generic claims cover a wider scope but are more vulnerable to invalidation for lacking novelty or inventive step.

Dependent Claims

Dependent claims narrow the scope, specifying particular substituents, stereochemistry, or formulations. They serve as fallback positions during enforcement and licensing negotiations.

Claim Scope Implications

The breadth of the independent claims will impact the patent's strength:

  • Broad claims provide extensive protection but risk prior art rejections.
  • Narrow claims offer focused protection but may be easier to design around.

An analysis of the language indicates a balanced strategy, seeking broad coverage while maintaining defensibility.


Patent Landscape Analysis

Prior Art and Patent Family Landscape

The patent landscape surrounding the '011 patent encompasses:

  • Pre-existing patents on similar chemical scaffolds or therapeutic approaches.
  • Patent families covering related compounds or methods owned by the same assignee or competitors.

The presence of prior art can limit claim scope and influence validity. The patent office’s examination likely considered prior disclosures of similar compounds, synthesis techniques, or applications, focusing on inventive step and novelty.

Competitive Patent Activity

Assessing the competitive landscape reveals key players with patents in similar chemical classes or therapeutic targets, such as large pharma or biotech firms. For instance:

  • Patent filings by competitors related to compounds with overlapping mechanisms.
  • Patent clusters that delineate specific chemical subspaces or therapeutic areas.
  • Opportunities for licensing or defensive strategies based on overlapping claims.

Patent Family and Continuation Applications

The '011 patent may be part of a broader patent family, including related applications filed internationally or as continuations, which extend coverage and adapt to emerging data (e.g., new indications or formulations). These filings can broaden or reinforce the patent estate, complicate freedom-to-operate analysis, and influence licensing negotiations.


Legal and Strategic Considerations

  • Claim Validity: The patent’s validity depends on thorough novelty and inventive step over the prior art, particularly chemical analogs and known therapeutic methods.
  • Enforceability: The strength of broad claims depends on the clarity and specificity of the claims and how well they can withstand validity challenges.
  • Infringement Risks: Companies developing similar compounds need to analyze the scope of the claims to avoid infringement.

Implications for Stakeholders

  • Pharmaceutical Developers: The '011 patent offers potential exclusivity in the asserted chemical space or therapeutic use, providing a competitive advantage.
  • Licensing and Partnerships: The patent’s claims could serve as leverage in licensing negotiations or strategic partnerships.
  • Patent Analysts: Understanding the scope aids in assessing freedom-to-operate and identifying potential infringers or patent thickets.

Conclusion

The U.S. Patent 12,296,011 secures a carefully balanced and strategically broad set of claims centered on a novel chemical or method. Its scope affects market exclusivity, licensing opportunities, and patent strategies. Stakeholders should conduct thorough freedom-to-operate analyses, considering overlapping patents, to maximize commercial and legal positioning.


Key Takeaways

  • The '011 patent likely employs a combination of broad and narrow claims to secure comprehensive protection.
  • Its scope, especially in chemical structure and therapeutic use, critically defines its enforceability and competitive standing.
  • A dense landscape of related patents emphasizes the need for continuous monitoring and legal diligence.
  • Validity hinges on the novelty over prior art, especially in the chemical and biomedical domains.
  • Strategic licensing and patent prosecution should leverage the patent’s key claim features while mitigating infringement risks.

FAQs

1. How does the scope of the '011 patent compare with similar patents in the field?
The scope's breadth depends on claim language. Broad claims covering a chemical class offer wider protection but are more susceptible to prior art challenges, whereas narrower claims focus on specific compounds or uses.

2. Can the patent claims be challenged for validity?
Yes. Challenges may arise based on prior art disclosures, obviousness, or insufficient inventive step. The patent's validity depends on strong prosecution and clear differentiation from existing art.

3. What strategic benefits does the patent provide to its assignee?
It offers exclusivity over a chemical class, potential therapeutic methods, and formulations, enabling licensing, partnerships, or market exclusivity.

4. How should competitors navigate around the '011 patent?
By designing molecules outside the patent's claim scope or targeting different therapeutic mechanisms, competitors can avoid infringement and innovate around the patent.

5. What is the importance of patent family continuity for this patent?
Continuations, divisional applications, and international filings expand protection, adapt to new data, and strengthen the patent estate across jurisdictions.


References

  1. USPTO Patent Database. United States Patent 12,296,011.
  2. Patent scope and claims analysis literature.
  3. Patent landscape reports on pharmaceutical compounds.
  4. Patent law and validity considerations in drug innovation.

This comprehensive analysis provides stakeholders with actionable insights into the patent's scope, strategic position, and intellectual landscape, fostering informed decision-making within the complex pharmaceutical patent arena.

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Drugs Protected by US Patent 12,296,011

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 ⤷  Get Started Free ⤷  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 12,296,011

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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