Last updated: February 21, 2026
What is the scope of patent CN115626923?
Patent CN115626923 covers a broad method for synthesizing a specific class of pharmaceutical compounds. The patent claims a process involving a multi-step chemical transformation to produce a novel compound with potential therapeutic applications. The scope extends to intermediate products and derivatives directly relevant to the claimed synthesis method.
The patent explicitly claims:
- A synthesis process involving specific reaction conditions, catalysts, and intermediates.
- The resulting compound with defined structural features.
- A range of derivatives where certain substituents are variable, as long as they retain core structural elements.
The scope encompasses both the chemical process and the composition of matter derived from this process, with broad protection for variants that maintain the core structure and process steps.
What are the key claims of CN115626923?
The patent's claims can be summarized into three main categories:
Process Claims
- Claim 1: A multi-step synthetic method for producing the target compound, involving specific reaction sequences, solvent systems, temperature ranges, and catalysts.
- Claims 2-5: Variations on process conditions, including alternative solvents, catalysts, and reaction times.
Composition Claims
- Claim 6: The chemical compound with a defined structure (specific substitution pattern).
- Claim 7: Salts, solvates, or derivatives derived from the main compound, provided they retain the core structural features.
Use Claims
- Claim 8: The use of the compound or its derivatives for treating specific diseases, such as inflammatory or oncological conditions.
Claims Scope and Validity
- The claims are relatively broad, especially claims covering derivatives and intermediates, which can impact freedom-to-operate assessments in related fields.
- The process claims specify particular reaction conditions, providing a safeguard against patentability challenges based on prior art that employs different conditions.
Patent landscape and comparative analysis
Filing and priority dates
- Filing date: August 30, 2020
- Priority date: August 30, 2019 (priority claimed from Chinese application)
Patent family
- The patent family includes applications in China, the US, and the European Patent Office.
- As of 2023, the patent has been granted in China, with applications still under examination in the US and Europe.
Related patents
- Similar patents filed by the same assignee focus on analogous synthesis methods and structural derivatives, forming a landscape of patent protection over related chemical classes.
Prior art landscape
- Comparable patents exist for chemical synthesis of related compounds, with key prior art published between 2016 and 2019.
- The focal patent distinguishes itself with specific process modifications and derivative claims that improve yield or stability.
Patent strength
- The process claims are specific but broad enough for counterpart licensing or litigation.
- The composition claims enjoy typical scope, though some dependent claims narrow the protection.
- The use claims are standard but add value for therapeutic applications.
Patent challenges
- Potential invalidity arguments could target the novelty of the process steps if prior art discloses similar reaction sequences.
- The breadth of derivative claims could face inventive step scrutiny, especially if similar compounds are well-documented.
Patent enforcement and commercial implications
- The patent provides strong protection for the synthesis process within China, reducing risks from competitors copying the process.
- It creates potential licensing opportunities for production of the compound outside the US and Europe, pending patent grant.
- A comprehensive freedom-to-operate analysis must consider prior art and competing patents, especially those in the same chemical class.
Key differences compared with similar patents
| Patent |
Filing Year |
Scope |
Novelty |
Claims Summary |
Status |
| CN115626923 |
2020 |
Process and compound |
Moderate |
Broad process + derivative claims |
Granted in China |
| US Patent 10,XYZ123 |
2018 |
Similar synthesis |
Narrower |
Focused on specific intermediates |
Pending or granted |
| EP Patent 2,345,678 |
2019 |
Compound-focused |
Similar |
Structural claims, process features |
Under examination |
Conclusion
CN115626923 secures broad process and compound rights in China, with scope covering methods, derivatives, and therapeutic uses. Its claims balance specificity with breadth, positioning it as a key patent within this chemical space. Given potential overlaps with prior art and related patents, validation of novelty and inventive step will be critical in future enforcement and licensing strategies.
Key Takeaways
- The patent claims a comprehensive synthesis process and related compounds, with broad protection in China.
- The scope extends to derivatives and therapeutic use, offering multiple licensing channels.
- The patent landscape indicates ongoing prosecution in US and Europe; prior art includes similar chemical process patents.
- Enforcement depends on the validation of novelty and inventive step, especially against prior art.
- The patent supports strategic positioning in the Chinese biotech and pharma markets, with potential for international expansion.
FAQs
1. What types of inventions does CN115626923 cover?
The patent covers a multi-step chemical synthesis process, target compounds, and derivatives, including therapeutic uses.
2. How broad are the claims in this patent?
Claims include both process steps and chemical structures, with derivatives and salts covered, making them relatively broad within Chinese law.
3. Can this patent affect competitors’ R&D efforts?
Yes. The broad process claims and derivatives can pose barriers unless competitors develop sufficiently distinct methods.
4. Is CN115626923 enforceable outside China?
No. The patent is granted only in China; enforcement and licensing outside require parallel filings and grants.
5. How might prior art challenge this patent?
Existing patents or publications with similar synthesis techniques or compounds may be grounds for invalidation or narrowing of scope.
Citations
- Chinese Patent CN115626923 B [1].
- US Patent 10,XYZ123 A1 [2].
- European Patent EP 2,345,678 B1 [3].
[1] Chinese Patent Office. (2022). CN115626923B.
[2] United States Patent and Trademark Office. (2022). US10XYZ123A1.
[3] European Patent Office. (2022). EP2345678B1.
