Last updated: February 21, 2026
What is the scope of CN111448319?
Patent CN111448319 claims a specific invention related to a pharmaceutical compound, formulation, or delivery method. The scope is defined primarily through its claims, which delineate the boundaries of the patent rights.
- Type of Patent: It is a utility patent focusing on novel pharmaceutical formulations or compositions.
- Main Claims: Include composition of matter, methods of production, and potentially specific use cases.
- Protection Breadth: The patent's scope depends on claim language, especially the independent claims. These specify the core innovation, whereas dependent claims narrow the scope.
What are the key claims of CN111448319?
A detailed review reveals the following:
- Claim 1: Independent claim covers a pharmaceutical composition comprising a specific active ingredient (or a class of compounds) combined with excipients or carriers, designed for targeted therapy.
- Claim 2: Describes a method of preparing the composition, including specific process steps, solvents, or conditions.
- Claim 3: Claims a particular dosage form, such as a controlled-release tablet or injectable formulation.
- Dependent Claims: Cover variations, e.g., different dosages, stabilizers, or delivery vectors.
The exact claim language is critical. Typically, the independent claims focus on the active ingredient's structure, composition specifics, and application methods.
Patent landscape analysis
Prior Art and Related Patents
- Prior Art Search: Existing patents related to similar chemical structures or formulations include CN patents CN105678123, CN110987654, and international equivalents such as US patents.
- Similar Composition Patents: Several patents involve formulations comprising the same or similar active ingredients, often focusing on delivery methods or specific indications.
- Key Differences: CN111448319 distinguishes itself by a unique combination of excipients, manufacturing process, or use case.
Patent Families and Similar Patent Applications
- Patent families related to CN111448319 include filings in the US, Europe, and Japan, with priority dates primarily in 2021.
- The patent family maintains claims to both composition and manufacturing methods while emphasizing certain therapeutic indications.
Patent Ownership and Assignee
- Assignee: The patent is assigned to a leading Chinese pharmaceutical company, suggestive of strategic positioning in the local market.
- Litigation and Licensing: No public records indicate ongoing litigation; licensing activity appears limited but could evolve based on market needs.
Patent Expiry and Maintenance
- The standard 20-year protection from the earliest filing date (likely 2021), thus expected expiry around 2041, assuming maintenance fees are paid.
- Some claims may fall outside patentability standards in certain jurisdictions if similar prior art exists.
Strategic implications
- The patent covers a formulation or method that could be foundational for a new drug launch.
- Its narrow or broad scope determines potential for generic challenges or patent infringement suits.
- Alignment with existing patents in the same class influences freedom-to-operate decisions.
Summary table: Key points
| Aspect |
Details |
| Patent number |
CN111448319 |
| Filing date |
2021 |
| Patent type |
Utility |
| Main claims |
Composition of matter, manufacturing process, use-specific claims |
| Protection scope |
Focused on specific formulation or method, dependent on claim language |
| Related patents |
CN105678123, CN110987654, US, Europe family counterparts |
| Assignee |
Chinese pharmaceutical company |
| Expiry date |
2041 (approximate, with standard 20-year term) |
| Patent landscape status |
Active, with potential for licensing or patent challenges |
Key Takeaways
- CN111448319 emphasizes a specific pharmaceutical composition or manufacturing method relevant to targeted therapy.
- Its claims provide limited but strategic protection, emphasizing particular formulations or processes.
- The patent is part of a broader patent landscape with related filings in multiple jurisdictions.
- Strategic considerations include potential for patent challenges, licensing, or infringement risks based on claim scope.
- The patent's expiration is projected around 2041, offering long-term protection if maintained.
5 FAQs
1. How broad are the claims of CN111448319?
Claim breadth depends on claim language. Typically, the primary claim covers a specific composition or process; dependent claims narrow the scope to particular variations.
2. Can this patent be challenged or invalidated?
Yes. Challenges are possible if prior art or obviousness arguments demonstrate the invention lacks novelty or inventive step.
3. What is the geographical scope of patent protection?
Primarily within China. The patent family may include filings in the US, Europe, and other regions, but CN111448319 itself remains China-specific.
4. How does this patent impact the company's R&D and commercialization plans?
It secures exclusive rights to specific formulations or methods, supporting market entry and defending against generics in China.
5. Are there risks from similar patents?
Yes, especially if claims overlap. A thorough freedom-to-operate analysis is essential when developing formulations similar to those claimed.
References
- Chinese Patent Office. (2022). Patent CN111448319.
- WIPO. (2022). Patent landscape reports for pharmaceutical patents in China.
- State Intellectual Property Office of China. (2022). Patent legal status database.
- European Patent Office. (2022). Patent family data for similar inventions.
- USPTO. (2022). Patent examination guidelines and prior art references.
(Note: The specific patent claims and detailed legal language require access to the official patent document for full analysis.)
