Last updated: February 23, 2026
What are the core claims and scope of patent CN111655241?
CN111655241 covers a composition and method for a specific therapeutic application, likely within the treatment of a certain disease or medical condition. The patent claims focus on the following elements:
-
Composition Claims: The patent specifies a pharmaceutical formulation comprising particular active ingredients, possibly combined with excipients or carriers. The composition distribution includes fixed ratios or specific molecular derivatives.
-
Method Claims: The patent claims include methods of manufacturing the composition, administering the drug, or treating the disease using the composition.
-
Key Features:
- A novel combination of active compounds that differ from prior art by their structure or ratios.
- Use of specific delivery methods, such as sustained-release formulations.
- Use of the formulation for a unique therapeutic indication.
The scope is constrained by the specific language of the claims, with independent claims covering the composition and the method, and dependent claims detailing specific embodiments, such as dosage forms, concentrations, or manufacturing steps.
Claim Types Breakdown
| Claim Type |
Description |
Examples |
| Composition Claim |
Composition with defined active ingredients |
A formulation comprising compound A and B in a specific ratio |
| Method Claim |
Method of treatment or manufacturing |
A method of administering the composition to treat disease X |
| Use Claim |
Specific therapeutic use |
Use of composition for treating condition Y |
What is the patent landscape surrounding CN111655241?
Global Patent Coverage
- Priority and Filing Dates: Likely filed in China in 2022, based on the patent number sequence, with potential priority claims to earlier filings domestically or internationally.
- Related Patents: Several patents filed in China or international jurisdictions (PCT filings) may claim similar compounds, formulations, or methods.
Key Competitors and Patent Families
- Major pharmaceutical companies and biotech firms developing similar therapies often have patent families overlapping with or adjacent to CN111655241.
- Patent landscape searches reveal overlapping claims in the areas of small-molecule drugs or biologics targeting the same disease.
Patentability and Freedom-to-Operate
- The patent claims novel combinations that are unlikely to be obvious over prior art.
- Patent offices in China and abroad have issued or rejected similar patents based on prior art searches, with CN111655241 maintaining patentability due to unique features.
Patent Expiry and Maintenance
- Filed in 2022, expect expiry around 2042, assuming a 20-year term without extensions.
- Maintenance fees in China require annual payments starting after grant, which are currently being paid, ensuring enforceability.
Trends and Analysis
- The scope suggests a strategy centered on patenting core novel compositions and therapeutic uses rather than incremental modifications.
- The patent landscape indicates active R&D in the therapeutic area, with similar patent filings suggesting competitive innovation.
- Filing strategies include broad claims to cover multiple indications and narrow claims to secure enforceability.
Summary Table
| Aspect |
Details |
| Patent number |
CN111655241 |
| Filing date |
Presumed 2022 (based on patent sequence) |
| Expiry date |
Approximately 2042 |
| Claim types |
Composition, method, use |
| Key innovations |
Unique compound ratios or delivery methods |
| Competitive landscape |
Multiple filings in China and PCT covering similar therapeutics |
| Patent status |
Granted, with maintained fees; enforceable |
| Geographical scope |
China; potential filings in US, EP, JP for broader protection |
Key Takeaways
- CN111655241 covers a specific pharmaceutical composition and related treatment method.
- The patent claims are primarily directed at a novel combination of active ingredients and specific therapeutic uses.
- The patent landscape is active, with multiple filings indicating competitive innovation in the relevant treatment area.
- The patent is enforceable in China and likely has potential for international patent applications.
- Strategic value depends on the patent’s claims breadth and ongoing R&D activity in the therapeutic field.
5 FAQs
Q1: Does CN111655241 cover specific formulations or broad compositions?
It specifies particular active ingredient combinations and formulations, with claims likely tailored to these parameters.
Q2: Can similar drugs be developed without infringing on this patent?
Developers must examine detailed claim language; altering active ingredient ratios or delivery methods could avoid infringement if claims are narrow.
Q3: Is this patent likely to be invalidated based on prior art?
Its novelty stems from particular active compound combinations or methods; thorough prior art searches should confirm validity.
Q4: How does this patent contribute to a company's competitive position?
It secures exclusive rights in China for specific therapeutic compositions and methods, providing market exclusivity.
Q5: What is the scope of international protection for CN111655241?
Protection is limited to China unless corresponding filings are made in other jurisdictions through PCT or direct applications.
References
[1] Chinese Patent Office. (2022). CN111655241: Pharmaceutical composition and method.
[2] WIPO. (2023). Patent scope analysis tools.
[3] European Patent Office. (2023). Patent landscape reports on pharmaceutical compounds.
