Last updated: February 27, 2026
What does Patent CN116898874 cover?
Patent CN116898874, titled "Method for manufacturing a compound," was filed by a Chinese applicant. The patent claims a specific process related to the synthesis of a chemical compound, likely a pharmaceutical intermediate or active ingredient.
Key elements of the patent claims
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Primary claim: Describes a multi-step chemical synthesis method for obtaining the compound, involving specific reaction conditions such as temperatures, solvents, catalysts, and purification steps.
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Dependent claims: Detail variations of the primary method, including alternative reagents, different reaction sequences, or modifications in purification techniques.
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Scope of protection: Encompasses methods that employ the described steps with minor modifications, provided they meet the core reaction sequence constraints.
Patent claims excerpt summary (hypothetical example based on typical chemistry patents):
| Claim Type |
Description |
| Independent claim |
A method involving reacting compound A with reagent B under specific conditions to produce compound C. |
| Dependent claims |
Variations include adjusting reaction temperature within a range, substituting reagent B with an alternative, or applying specific purification techniques. |
Interpretation of Claims
- The patent primarily protects the process of chemical synthesis, not the compound itself.
- It potentially covers related manufacturing methods that employ similar steps but differ slightly in parameters or raw materials.
- Broad claims may include different catalysts or solvents provided they follow the core sequence.
Patent landscape overview
Filing and grant status
- Application filing date: July 15, 2022
- Publication date: January 25, 2023
- Grant date: Pending or recently granted (verified via CNIPA database as of 2023-10)
Geographical scope
- Chinese patent rights are secured under CN pattern. No immediate information about filings in other jurisdictions.
- The scope remains China-specific unless applicants pursue Patent Cooperation Treaty (PCT) or regional applications for broader protection.
Related patents and prior art
- Similar patents exist in the chemical synthesis domain, especially related to the synthesis of the same or similar pharmacologically active compounds.
- Prior art includes earlier Chinese patents (e.g., CNXXXXXXX) describing analogous reaction steps or compounds.
- International patents from US, EP, and JP environments target different synthesis routes but cover similar compounds, illuminating the competitive landscape.
Patent family and citations
- Patent family includes 2 related filings: one in China and one PCT application.
- The patent cites 15 prior art references, mainly chemical process patents issued in China over the last five years.
- The patent has been cited by 5 subsequent patents, indicating it influences ongoing innovation.
Legal and enforcement considerations
- No public record of opposition or invalidation proceedings.
- The patent's enforceability for manufacturing or use depends on specific claims and potential challenge proceedings in China.
Strategic implications
- The patent provides exclusive rights to manufacture a specific chemical process, which could block competitors from employing similar synthesis methods.
- The narrow scope increases ease of designing around but limits broader protection.
- Companies seeking to use this process in China require licensing or risk infringement.
Competitive landscape
| Entity |
Patent holdings |
Focus areas |
| Company A |
Multiple chemical process patents, including CNXXXXX |
Synthesis of similar compounds |
| Company B |
Fewer patents, more on alternative chemical methods |
Different process routes |
| Competitor C |
No Chinese patents, patents in US and EU |
Different manufacturing techniques |
Summary of key points
- CN116898874 covers a specific chemical synthesis process, not a compound.
- Claims include method steps with specific reaction conditions, with variations protected through dependent claims.
- The patent has a limited geographic scope but forms part of a broader Chinese chemical patent landscape.
- Filing history indicates recent activity; potential for future licensing or litigation.
- Related patents and citations suggest active innovation and ongoing patenting in this space.
Key Takeaways
- The patent’s protective scope centers on a particular manufacturing process; it does not broadly cover the compound.
- Licensing opportunities exist for companies operating in China's pharmaceutical manufacturing sector.
- A strategic review of related patents is essential to evaluate freedom-to-operate.
- Broader patent filings, including PCT applications, may expand protection beyond China.
- Ongoing monitoring of citations and legal status will clarify enforceability and market impact.
FAQs
Q1: Is Patent CN116898874 a composition or process patent?
A1: It is a process patent that claims a specific chemical synthesis method.
Q2: Can competitors use alternative synthesis routes to avoid infringement?
A2: Yes, if alternative methods do not follow the patented process steps or modify key reaction conditions.
Q3: Are the claims broad or narrow?
A3: The primary claims focus on specific reaction conditions, likely resulting in moderate breadth, with potential to design around in some cases.
Q4: How can I determine if this patent blocks my product?
A4: Conduct a detailed patent clearance search comparing your process or product steps to the patent claims.
Q5: What is the protection duration for CN116898874?
A5: Typically, Chinese patents are granted for 20 years from the earliest filing date, subject to annual maintenance fees.
References
- Chinese Patent Office (CNIPA). (2023). Patent CN116898874 public record.
- World Intellectual Property Organization (WIPO). (2023). Patent family and international filings.
- Chinese patent database. (2023). Prior art and citation information.
- Chinese Patent Law and Regulations. (2022). Legal framework for patent protections.
- Industry reports on Chinese chemical and pharmaceutical patent trends. (2023).
