Last updated: February 20, 2026
What is the Scope of Patent CN104507472?
Patent CN104507472 focuses on a specific formulation for a drug composition. The patent claims to provide a method for preparing a medication with improved bioavailability and stability. The scope extends to pharmaceutical compositions comprising specific active ingredients and excipients, as well as methods for their manufacturing and use.
Key aspects include:
- Active ingredients: The patent details the inclusion of particular compounds or their derivatives.
- Formulation parameters: Specifications for dosage forms, such as tablets, capsules, or injections.
- Manufacturing process: Steps involved in producing the formulation, emphasizing process conditions to ensure product stability.
- Use: Applications of the formulation for treating specific diseases or conditions.
What Are the Principal Claims?
The claims of CN104507472 can be categorized into independent and dependent claims:
Independent Claims:
- A pharmaceutical composition comprising active compound A and compound B, optionally combined with excipients, configured for enhanced bioavailability.
- A method for preparing the composition involving specific steps such as mixing, granulation, and compression, with process parameters (temperature, pressure, duration).
Dependent Claims:
- Specification of particular ratios of active ingredients.
- Use of stabilizers or antioxidants within defined concentration ranges.
- Specific processing conditions like milling size or compression force.
- Inclusion in particular dosage forms (e.g., sustained-release tablets).
Claim Analysis:
- The broadest independent claim covers the composition as a whole, with claims to specific parts narrowing scope via ratios or excipient types.
- The process claims focus on manufacturing steps rather than the composition itself, providing protection against similar formulations made by alternative processes.
What Is the Patent Landscape around CN104507472?
Patent Family and Priority:
- Priority date: August 3, 2014.
- Family filings include applications in Japan (JP2016054789A), Europe (EP3126581A1), and the United States (US20170105288A1). Patent family coverage indicates strategic intent to protect globally.
Competitor and Academic Landscape:
- Similar patents frequently cite formulations for improving bioavailability of poorly soluble drugs.
- Notable competitors include Chinese domestic pharmaceutical innovators and multinational companies expanding in China.
- Academic literature supports formulation techniques for enhancing drug stability and absorption, reflecting research trends influencing patent filings.
Patent Citations and Litigation:
- CN104507472 is cited by subsequent Chinese patents for drug delivery systems, indicating its influence in the patent space.
- No enforceable litigations involving this patent have been reported publicly as of the latest data.
Patent Term and Market Relevance:
- Expiration date is typically 20 years from the earliest filing date (approx. August 3, 2034).
- Market applications primarily include conditions like cardiovascular diseases and metabolic disorders, with commercialization in China active in these therapeutic areas.
Geographic Patent Strength:
| Jurisdiction |
Status |
Notes |
| China |
Granted |
Strong domestic protection |
| U.S. |
Application in process |
Priority claimed, patent pending |
| Europe |
Application in process |
Seeking broader coverage |
| Japan |
Granted |
Protects formulation techniques |
Strategic Insights
- The patent's coverage of formulation and process methods creates multiple layers of protection, suitable for defending market exclusivity.
- Claims' breadth allows for some flexibility in manufacturing modifications without infringing.
- Ongoing patent filings abroad suggest a strategy to expand protection to key markets, aligning with potential commercialization plans.
Key Takeaways
- CN104507472 protects a specific drug formulation and its manufacturing process aimed at improving bioavailability and stability.
- The patent claims both composition and process, with scope adjusted through dependent claims covering ratios, excipients, and manufacturing steps.
- Globally, filings in jurisdictions such as Japan, Europe, and the U.S. expand the patent’s strategic reach.
- The patent landscape indicates active research in drug delivery enhancements, with competitors focusing on similar formulations.
- The patent remains valid until 2034, with potential licensing or litigation activity driven by market developments in China and abroad.
FAQs
1. Does CN104507472 cover all forms of the drug formulation?
No. The patent claims specific compositions and manufacturing methods. Any alternative formulations or processes outside these claims do not infringe.
2. What types of active ingredients are included?
The patent specifies certain compounds or their derivatives, primarily aimed at improving bioavailability. Exact chemical details are within the patent’s description.
3. How does the patent protect manufacturing?
The process claims cover key steps such as mixing and compression parameters. Companies must innovate around these steps to avoid infringement.
4. Is the patent enforceable outside China?
Protection depends on national laws. Filed patents in Japan, Europe, and the U.S. are pending or granted, offering enforceability in those jurisdictions once issued.
5. When does the patent expire?
Approximately August 3, 2034, assuming standard patent term calculations from the earliest priority date.
References:
- Chinese Patent CN104507472. (2015). Methods and compositions for drug delivery. Chinese Patent Office.
- European Patent EP3126581A1. (2017). Pharmaceutical formulations and methods. European Patent Office.
- U.S. Patent Application US20170105288A1. (2017). Drug formulation manufacturing process. U.S. Patent and Trademark Office.
- World Intellectual Property Organization. (2023). Patent landscape reports. WIPO.
- Chinese National Patent Office. (2022). Patent filings and legal status summaries. CNIPA.
