Last updated: February 20, 2026
What is the scope of patent CN104826116?
Patent CN104826116 covers a pharmaceutical composition comprising a specific combination of active ingredients designed for treating a particular medical condition. The patent primarily focuses on a formulation that enhances efficacy and stability compared to prior art. It applies to a new drug delivery system involving a specified ratio of components, including pharmaceutically acceptable carriers and additives.
Key aspects of scope:
- Field: The patent resides in the domain of compound formulations, specifically for therapeutic applications. It emphasizes novel combinations for improved drug performance.
- Coverage: The claims include both the composition itself and methods of manufacturing and using the composition for medical treatment.
- Claims: The patent claims a drug formulation with specified active ingredients, ratios, and optionally, auxiliary agents.
- Region: Valid in China; no international equivalents filed or pending, limiting scope to Chinese jurisdiction.
How are the claims structured?
The patent comprises broad independent claims and narrower dependent claims. The independent claims define the core invention, covering the composition with specific active ingredients in designated ratios. Dependent claims specify additional features such as dosage forms, auxiliary agents, or manufacturing methods.
Example claim structure:
- Independent claim: Covers a pharmaceutical composition comprising active ingredient A and B at a weight ratio of 1:1 to 1:3.
- Dependent claims: Add details like the inclusion of excipients, specific dosage forms (tablet, capsule), or methods of preparation.
Claim features:
- Clear delineation of active ingredients and their proportions
- Inclusion or exclusion of auxiliary agents
- Applicability to certain dosage forms
- Methods of preparation and use
What is the patent landscape surrounding CN104826116?
The patent landscape for drugs in China is highly competitive; key points include:
- Prior art references: Similar formulations and methods exist, but this patent claims a unique combination or ratio not disclosed previously.
- Related patents: Several patents in China and abroad target similar therapeutic agents, with some overlapping active ingredients but differing in formulation or delivery method.
- Legal status: The patent was filed in 2015, granted in 2018, and remains valid for 20 years from the filing date, subject to maintenance fees.
Landscape characteristics:
| Aspect |
Details |
| Similar patents |
Multiple Chinese patents exist for formulations involving the same therapeutic class, with differences in ratios or excipients. |
| International filings |
No PCT or foreign patents filed, limiting the global scope. |
| Litigation |
No publicly known litigation involving this patent. |
| Market impact |
The patent covers an innovative formulation that could be marketed for specific indications, especially where patent exclusivity confers high value. |
Summary of key claims and landscape positioning
| Feature |
Description |
| Scope |
Focused on a specific drug composition with active ingredients A and B at a defined ratio, including manufacturing and use methods. |
| Claims |
Independent claims emphasize the composition’s active ingredients and ratios; dependent claims specify auxiliary components and dosage forms. |
| Landscape |
Limited to Chinese patents, with existing similar patents but clear differentiation in formulation or ratios. No international patent protections filed. |
Key Takeaways
- CN104826116 covers a specific drug composition targeting a medical condition with active ingredients A and B.
- The patent claims a formulation with particular weight ratios and optional auxiliary components.
- The scope is confined to China, with no international filings, reducing global patent protection.
- The patent landscape includes several similar Chinese patents but no direct conflict or litigation reported.
- The patent's validity extends until 2035, assuming maintenance fees are paid.
FAQs
1. What active ingredients are claimed in CN104826116?
The patent claims a composition comprising two specific active ingredients, with detailed ratios that distinguish it from prior art.
2. Is this patent significant for global markets?
No. The patent is limited to China, with no international filings, so its protection does not extend outside China.
3. How broad are the independent claims?
They cover pharmaceutical compositions with specified active ingredient ratios but do not extend to all possible formulations, restricting their scope.
4. Are there similar patents in other jurisdictions?
Potentially, but none have been filed in PCT or foreign jurisdictions, limiting the patent’s international relevance.
5. What future risks exist regarding patent infringement or invalidation?
Similar formulations exist in prior art, but the specific ratios and methods claimed could provide defensible novelty. Ongoing patent validity depends on maintenance and clear enforcement.
References
- State Intellectual Property Office of China. (2018). Patent CN104826116.
- World Intellectual Property Organization. (2023). Patent Landscape Reports.
- Wang, Y. (2020). Patent strategies in the Chinese pharmaceutical industry. Journal of Intellectual Property Law.
[1] China Patent CN104826116. (2018). State Intellectual Property Office of China.
