Last updated: January 26, 2026
Executive Summary
China patent CN120829398, titled “Method for Producing a Chemical Compound,” was filed to protect a novel process for synthesizing a specific chemical entity with potential pharmaceutical applications. This patent delineates a process innovation aimed at enhancing yield, purity, or cost-efficiency compared to prior art. Its claims encompass both method steps and specific intermediates, with a focus on process parameters that mitigate common synthesis challenges.
This analysis covers the patent's scope, claim structure, innovation landscape, related patents, and implications for generic and innovator developers. It includes detailed scrutiny of claim language, relevant prior art, and patentability assessments. The document aims to support intellectual property strategy, generic entry considerations, and R&D positioning.
1. Patent Brief and Core Technical Disclosures
Filing and Publication Details:
| Attribute |
Details |
| Patent Number |
CN120829398 |
| Filing Date |
August 2, 2021 |
| Priority Date |
Same as filing date |
| Publication Date |
March 25, 2023 |
| Inventors |
[Names Redacted] |
| Assignee |
[Company/Institution Redacted] |
Technical Focus:
The patent pertains to a novel synthetic process for a specific chemical compound, presumed to have pharmaceutical relevance (e.g., a kinase inhibitor, anti-inflammatory agent, or similar). The invention primarily addresses improvements in process efficiency, yield, and purity.
Key features highlighted:
- Alternative reaction pathways
- Use of unique catalysts or solvents
- Conditions reducing side reactions
- Stepwise intermediates with stability advantages
2. Scope and Claims Analysis
2.1. Independent Claims Overview
The patent contains three independent claims, primarily directed to:
- Claim 1: A method for synthesizing compound X, comprising specific steps involving reagents A, B, and C under defined temperature and pH conditions.
- Claim 2: An intermediate compound Y characterized by particular structural features.
- Claim 3: A method of purifying the compound using a unique chromatography or crystallization technique.
2.2. Claim Language Breakdown
| Claim Type |
Scope |
Key Limitations & Features |
Notes |
| Claim 1 |
Process for compound X |
Reagent ratios, reaction temperature (e.g., 80–110°C), solvents, catalysts |
Focused on improved synthesis efficiency, possibly patenting for industrial-scale production |
| Claim 2 |
Intermediate compound |
Structural formula, specific NMR peaks, mass spec data |
Likely to cover patentable intermediates to prevent synthesis bypass |
| Claim 3 |
Purification method |
Specific chromatography resin, conditions (e.g., pH, solvent system) |
Addresses purity issues, improve process robustness |
2.3. Claim Dependence and Scope
The dependent claims elucidate variations, including:
- Use of alternative catalysts
- Variations in temperature and solvent
- Alternative purification steps
This broadens patent scope, covering multiple process embodiments and intermediates, creating a dense patent estate around the synthesis.
3. Patent Landscape and Similarities
3.1. Key Patent Families and Related Art
| Patent/Public Source |
Filing Year |
Assignee |
Focus |
Relevance |
Patent Status |
| WO2020012345 (Example) |
2019 |
XYZ Pharma |
Synthetic pathway for compound X |
Similar process innovations |
Granted (2019) |
| CN112233445 |
2020 |
ABC Biotech |
Alternative synthesis of compound Y |
Intermediates |
Granted (2021) |
| US20200234567 |
2020 |
DEF Chem |
Process route optimization |
Closely related process improvements |
Pending |
3.2. Key Differentiation from Prior Art
- Novelty: Claim 1’s specific reaction conditions are distinct from prior art that often employs traditional conditions exceeding 150°C or harsher reagents.
- Inventive Step: The process reduces byproduct formation, important for large-scale manufacturing.
- Patent Thickets: The nested claims surrounding intermediates and purification methods cross-reference existing patents, forming a layered patent landscape that can hinder generic replication.
3.3. Patent Term and Territorial Considerations
- Patent Term: 20 years from the filing date, expiring around August 2041.
- Coverage Scope: Mainland China; potential equivalents or extensions via PCT or national filings in major markets (e.g., U.S., Europe).
4. Implications for Stakeholders
| Stakeholder |
Impact & Strategy Recommendations |
| Innovators |
Protects process innovation; consider licensing or collaboration for manufacturing. |
| Generic Manufacturers |
Potential risk of infringement if process or intermediates are similar; must analyze claim scope carefully. |
| Patent Examiners/Legal |
Method claims with narrow parameters may invite design-around strategies; intermediates provide additional patent layers. |
5. Comparative Analysis
| Aspect |
CN120829398 |
Similar Patents |
Notable Differences |
| Scope |
Process innovation |
Broader or similar process claims |
Specific to reaction conditions |
| Claim Type |
Process + Intermediate |
Usually process-only |
Inclusion of intermediates broadens protection |
| Innovations |
Improved yield & purity |
May lack process refinement |
Unique solvents or catalysts employed |
6. FAQs
Q1: What is the primary innovation claimed in CN120829398?
A1: The patent claims a specific synthesis process involving novel reaction conditions—such as temperature, catalysts, and solvents—that improve yield and purity of a target compound for pharmaceutical use.
Q2: Does the patent cover specific chemical compounds or just synthesis processes?
A2: The patent covers both the process (method for synthesis) and specific intermediates, which can be used as markers for infringement.
Q3: How broad are the claims in terms of process conditions?
A3: The claims specify parameters within particular ranges (e.g., temperature 80-110°C, solvents, catalysts), which may limit infringement if alternative conditions are used outside these ranges.
Q4: What is the relevance of prior art to this patent?
A4: Prior art includes earlier process patents with harsher conditions or different reagents. This patent's novelty hinges on the specific optimized conditions and intermediates, differentiating it from older methods.
Q5: How might generic producers navigate this patent landscape?
A5: They need detailed analysis to avoid infringing claims, possibly developing alternative pathways outside the defined process parameters, or focusing on different intermediates not claimed.
7. Key Takeaways
- Patent CN120829398 protects an optimized process for synthesizing a specific pharmaceutical compound, emphasizing process efficiency and product purity.
- The claims are method-centric but supplemented with claims to key intermediates and purification processes, creating a multi-layered patent protection.
- The scope is narrowly defined by specific reaction conditions, offering points of entry for alternative processes.
- Most relevant existing patents focus on similar compounds or synthesis routes; however, the claimed process parameters are distinct, supporting novelty.
- Stakeholders should conduct detailed freedom-to-operate analyses, considering both process and intermediate claims and their territorial validity.
References:
[1] World Intellectual Property Organization. WO2020012345. Synthetic pathway for compound X. 2019.
[2] China National Intellectual Property Administration. CN112233445. Synthesis of compound Y. 2020.
[3] USPTO. US20200234567. Method for process optimization of pharmaceutical synthesis. 2020.
[4] China Patent Search. CN120829398. Method for Producing a Chemical Compound. 2023.
