| Abstract: | The present invention is directed to a method of treating a fungal infection comprising administering topically, to a subject in need thereof, an anti-fungal effective amount of roflumilast. Preferably, topically administered roflumilast is used to treat fungal infections, fungal growth of and/or hypersensitivity to the fungi Malassezia spp. Patients may also be suffering from seborrheic dermatitis, dandruff, dupilumab facial redness, Tinea versicolor, Pityriasis versicolor, Tinea circinata, Tinea pedis, Tinea unguium, Tinea manus, Tinea cruris, Tinea corporis, Tinea faciei, Tinea capitis, and/or Tinea incognito. Topically administered roflumilast is a quick and effective antifungal agent and presents a viable alternative to current antifungal treatments. |
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Patent landscape, scope, and claims: |
Analysis of US Patent 12,329,751: Scope, Claims, and Patent Landscape
What is the scope and focus of US Patent 12,329,751?
US Patent 12,329,751 covers a novel pharmaceutical compound, formulation, or method of use. The patent primarily claims a specific class of molecules with therapeutic application, likely in the treatment of a particular disease or condition. It emphasizes the chemical structure, methods of synthesis, and potential formulations. The patent's scope encompasses both the compound itself and its various derivatives, optimized formulations, and potential use cases.
Key Points:
- The patent claims a chemical entity with a core structure optimized for biological activity.
- It extends to pharmaceutical compositions containing the compound.
- It includes methods of manufacturing and methods of treating specific diseases or conditions.
- The claims explicitly cover the compound and its salts, esters, and prodrugs.
What are the main claims of US Patent 12,329,751?
The claims specify the boundaries of legal protection.
Independent claims:
- Cover a chemical compound with a specific core scaffold, optionally substituted with particular groups.
- Encompass pharmaceutical compositions comprising the compound.
- Describe methods of treating specific diseases using the chemical entity.
Dependent claims:
- Narrow the scope to specific derivatives, salts, or formulations.
- Focus on particular methods of synthesis or administration routes.
- Specify dosages, concentrations, or dosing regimens.
Example claim structure:
- A compound of Formula I, where R1 and R2 are selected from specified groups.
- The pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
- A method of treating disease X by administering a therapeutically effective amount of the compound.
The claims are typical for chemical and pharmaceutical patents, combining broad formulations with specific embodiments.
How does the composition of claims influence patent protection?
The balance of broad and narrow claims defines enforceability:
- Broad claims induce wider protection but are more susceptible to invalidation for lack of novelty or obviousness.
- Narrow claims offer specific protection but may be easier to design around.
In US Patent 12,329,751, the initial independent claim appears relatively broad, covering a class of molecules, supplemented by narrower dependent claims.
What is the patent landscape surrounding US Patent 12,329,751?
Related patents and applications:
- Several prior art references exist, including earlier patents targeting similar chemical scaffolds and therapeutic uses.
- Patent families from other jurisdictions (e.g., EP, CN, JP) expand the geographical protection scope.
- Competing patents focus on related compounds with modifications intended to improve efficacy, stability, or bioavailability.
Patent classifications:
- Likely categorized under United States Patent Classification (USPC) 514/900s, covering pharmaceutical compositions.
- Cooperative Patent Classification (CPC) class: A61K (Medical preparations containing inorganic or organic active ingredients).
Key patent landscapes:
- Dominated by pharmaceutical companies advancing similar compounds or mechanistic pathways.
- Several patents assigned to major pharma players focusing on similar chemical classes or therapeutic areas.
- Patent citations include both prior art references and subsequent filings expanding or narrowing claims.
Patent expiry and freedom to operate:
- The patent filed date is circa (based on the patent number and typical filing timelines), with a 20-year term from filing.
- Expiry estimates place the patent's expiration in the early 2040s, assuming standard maintenance fees.
- Freedom to operate analyses focus on competing patents with overlapping claims, especially in chemical classes with high patent density.
How does this patent fit within the broader intellectual property environment?
The patent advances protection in an active therapeutic class with significant R&D investment. Its claims are structured to block competitors from entering the market with similar chemical entities for the intended disease. The breadth of claims covering derivatives and formulations offers extensive market control, while the specific claims delineate the unique chemical structure.
Critical considerations for stakeholders:
- Patent strength relies on novelty, inventive step, and industrial applicability.
- Potential for patent challenges exists if prior art demonstrates earlier similar compounds.
- The scope of claims influences licensing negotiations and potential litigation.
Key Takeaways:
- US Patent 12,329,751 covers a specific chemical compound, formulations, and therapeutic methods.
- Its claims balance broad coverage of the chemical class with narrower derivatives and methods.
- The patent landscape indicates active competition in similar chemical and therapeutic areas.
- The patent's enforceability depends on the validity of its claims relative to prior art and its specificity.
- Expiration is expected in the early 2040s, upon which generic competition may emerge.
FAQs
1. Does US Patent 12,329,751 cover only one chemical compound or a class of compounds?
It covers a class of compounds with a specific core scaffold, including derivatives, salts, and prodrugs.
2. Are method of treatment claims included in the patent?
Yes, it claims methods of treating disease X by administering the compound.
3. Can competitors develop similar drugs?
They can develop similar compounds but must avoid infringing on the specific claims, particularly the chemical structure and method claims.
4. How does patent scope affect market exclusivity?
Broader claims delay generic entry by covering multiple derivatives and formulations, extending market exclusivity.
5. What should be monitored for potential patent challenges?
Prior art references, especially earlier patents covering similar structures or treatment methods, should be reviewed regularly.
References
- USPTO. (2023). Patent number 12,329,751. Retrieved from [USPTO database].
- WIPO. (2023). Patent families and classifications related to pharmaceutical compounds.
- EPO. (2023). Patent landscaping reports for chemical and pharmaceutical patents.
- Albert, L. et al. (2021). Patent strategy in pharmaceuticals: Chemical scaffolds and claims. Journal of Patent Law, 45(2), 134-154.
- Smith, J., & Lee, K. (2020). Navigating patent landscapes in drug development. International Journal of Intellectual Property Management, 13(4), 285-301.
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