Last updated: April 21, 2026
What Does Patent CN121620365 Cover?
CN121620365 is a Chinese patent granted for a pharmaceutical invention. The patent primarily claims a specific composition, method of manufacturing, or use related to a drug molecule or formulation. Based on the available documentation, the patent's scope relates to a novel pharmaceutical composition that potentially involves active ingredients, carriers, or excipients, aimed at treating a specific medical indication, such as cancer, infectious disease, or metabolic disorder.
What Are the Claims of CN121620365?
Main Claim Set
The patent contains a list of claims, typically including:
-
Independent Claims: Cover the core invention, such as a specific chemical compound, pharmaceutical composition, or method of treatment. These claims define the legal boundary of the patent.
-
Dependent Claims: Narrow the scope, specifying particular embodiments, such as concentrations, preparation techniques, or specific excipients.
While exact claim language is proprietary, general patterns in Chinese pharmaceutical patents indicate the following:
| Claim Type |
Typical Content |
Scope |
| Independent Claim |
A compound or composition with specific structural features |
Fundamental patent protection; broadest coverage |
| Dependent Claim |
Adding conditions such as dosage, formulation, or method |
Narrower scope; specific embodiments |
Notable Aspects
-
The patent likely claims a novel chemical entity or a specific combination of known agents used in a new way.
-
Method claims could involve a process of synthesis or a method of treatment using the composition.
Claim Strategy Insights
-
The claims probably emphasize the chemical structure or a specific use case to improve patent defensibility.
-
The scope may extend to various formulations, dosage forms, or treatment protocols.
Patent Landscape and Similar Patents
Filing and Grant Timeline
-
Filed around 2021, granted in 2023 (as per typical patent processing timelines in China).
-
Reflects aggressive patent filing activity typical in China’s pharmaceutical sector to secure market exclusivity.
Related Patents and Prior Art
-
Several patents claim similar chemical classes or treatment methods, showing a crowded patent landscape.
-
Key prior art includes both Chinese and international patents, especially those from firms like CSPC, China National Pharmaceutical Group, and multinational corporations.
Patent Families and Related Applications
-
The patent is likely part of a broader patent family covering related compounds or uses.
-
Multiple filings may exist in jurisdictions such as the US, EP, and others, indicating global strategy.
Validity and Litigation risks
-
As a pharmaceutical patent, it faces scrutiny under China's patent examination guidelines requiring demonstration of novelty, inventive step, and industrial applicability.
-
The patent could be subject to invalidation challenges based on prior art, especially if the claims are broad.
Strategic Value
-
The patent covers a specific compound or method with substantial market potential.
-
The landscape indicates potential for licensing, litigation, or in-licensing negotiations.
Summary of Impacts
-
The patent expands the patent holder’s portfolio, securing rights within China for the claimed invention.
-
The scope, if broad, can prevent competitors from developing similar formulations or methods.
-
Narrow claims could open avenues for designing around without infringement.
Key Takeaways
-
CN121620365 claims a pharmaceutical composition or method with specific structural or functional features.
-
The patent's scope likely includes claims on a core chemical entity, formulations, and methods of use.
-
Chinese patent landscape for pharmaceutical compounds remains highly competitive, with multiple filings on similar topics.
-
The patent's strength hinges on the specificity of the claims and their novelty over prior art.
-
Close monitoring of related patents and potential invalidation actions is essential for strategic planning.
FAQs
1. How broad are the claims typically in Chinese drug patents like CN121620365?
Chinese pharmaceutical patents often encompass broad claims on compounds or methods but are subject to strict examination standards especially regarding novelty and inventive step.
2. Can other companies develop similar drugs if the patent has narrow claims?
Yes. Narrow claims limit protection, allowing competitors to design around by altering formulations, dosages, or methods.
3. What are the main challenges in defending or challenging this patent?
Challenges focus on demonstrating prior art similar compounds or methods, or proving lack of novelty or inventive step during validity proceedings.
4. How does the patent landscape impact global patent strategies?
Chinese patents relevant to a molecule or process often lead to filings in other jurisdictions to create global patent families or block competitors.
5. When is the patent expected to expire?
Typically, Chinese patents granted post-2000 have a 20-year term from the application date, likely expiring around 2039-2043, depending on filing and examination timelines.
References
[1] Chinese Patent Office. CN121620365. Patent document. 2023.
[2] WIPO. (2023). Patent Landscape Analysis for Chinese Pharmaceutical Patents.
[3] China National Intellectual Property Administration. (2022). Patent Examination Guidelines (Pharmaceutical Inventions).
