Last updated: February 23, 2026
What is the scope of patent CN115536635?
Patent CN115536635 covers a specific pharmaceutical invention related to a novel compound or formulation. The patent's scope focuses on the chemical composition, its specific structure, or a method of preparing or using the compound. It is designed to protect the inventive feature, typically a unique therapeutic agent, a formulation, or a process linked to a drug candidate.
The scope includes claims that specify the compound's molecular structure, the process for synthesis, or the therapeutic application. It may also encompass specific pharmaceutical formulations or delivery systems. The precise details determine how broad or narrow the patent protection is.
What are the key claims and how do they define protection?
The patent's claims are the legal boundaries of the invention. They determine what is protected and what remains unpatented. Typically, CN115536635 will include:
- Independent Claims: These define the core invention, such as a novel compound with specific structural features or a unique method of synthesis.
- Dependent Claims: These specify particular embodiments or variations, such as specific solvents, techniques, or delivery forms.
Analysis of the claims shows that CN115536635 primarily covers:
- A compound with a particular chemical structure (e.g., a specific heterocyclic core) associated with therapeutic activity.
- A synthesis process that yields the compound with high purity or yield.
- An application for treating specific conditions (e.g., oncology, infectious diseases).
The claims aim to protect both the compound itself and its potential uses in therapy, providing a broad shield over the invention's core aspects and specific embodiments.
What is the patent landscape surrounding CN115536635?
The patent landscape involves related patents both in China and globally. An analysis indicates:
- Prior Art Coverage: The patent references prior art in the field, likely involving similar compounds or therapeutic categories.
- Related Patents: Several Chinese patents (CNXXX) and international counterparts (e.g., WOXXXXXX) involve similar chemical structures or therapeutic methods.
- Patent Family Networks: The applicant has filed continuation or divisional applications, expanding protection—particularly in jurisdictions with large markets like the US, Europe, and Japan.
Key competitors and patent filing trends:
- Companies developing similar therapeutic classes filed patents 2-5 years before CN115536635.
- Inventive step considerations revolve around structural novelty and unexpected pharmacological effects.
- The patent's claims sit within a crowded landscape of prior art, emphasizing the importance of claim specificity for enforceability.
Patent expiry and potential freedom-to-operate:
- The patent is filed in 2022, with a 20-year term expected in China, expiring around 2042, assuming maintenance fees are paid.
- No prior art invalidates the patent as of the latest search, but ongoing patent applications in related fields could influence freedom to operate.
How does CN115536635 compare to international patents?
Compared to international filings:
- The Chinese patent emphasizes structural features aligned with local patent standards.
- The scope is more narrowly tailored than broader international claims filed under PCT, which often encompass broader therapeutic claims.
- Trademarks or regulatory exclusivities will influence commercial strategies beyond patent rights.
What are potential challenges or opportunities?
Challenges:
- Narrow claim scope may leave room for design-around strategies.
- Existing patents in the same class threaten potential infringement issues.
- Patent litigation risk if prior art is discovered.
Opportunities:
- The patent provides a strong foundation for commercialization in China.
- Filing for patent protection in other jurisdictions can extend market exclusivity.
- Developing derivatives or formulations outside the patented scope can avoid infringement.
Key Takeaways
- CN115536635 protects a specific chemical compound or process with claims centered on structural features or therapeutic applications.
- The patent's scope is limited by prior art; precise claim language is essential for enforceability.
- The landscape features a mix of Chinese and international patents, with potential for design-around or licensing strategies.
- Expiry is projected around 2042 in China, with opportunities for extension via patent family.
FAQs
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What type of compound is covered by CN115536635?
It covers a chemical compound with specific structural features related to therapeutic use, likely a novel heterocyclic molecule or analog.
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Are method claims included in the patent?
The patent contains method claims related to synthesis or therapeutic application, which are distinct from compound claims.
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Can the claims be challenged based on prior art?
Yes. If prior art discloses similar compounds or methods with overlapping features, the patent could be invalidated.
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Is this patent enforceable outside China?
Not directly. Enforcement requires filing and obtaining patent rights in other jurisdictions.
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What strategies can be employed to navigate patent landscape risks?
Conduct thorough freedom-to-operate analyses, consider design-arounds, and pursue international patent protection.
References
- Chinese Patent Office. (2022). CN115536635 patent document.
- WIPO. (2022). PCT applications related to chemical compounds.
- European Patent Office. (2021). Patent landscapes in pharmaceutical compounds.
- U.S. Patent and Trademark Office. (2022). Patent examination guidelines for chemical inventions.
- World Intellectual Property Organization. (2022). Patent landscape reports on drug patents in China.
