Last updated: February 19, 2026
What Is the Scope of Patent CN111278466?
Patent CN111278466 covers a novel pharmaceutical composition or method, specifically related to a therapeutic use involving a specified active ingredient or combination. The patent's scope primarily pertains to the composition, its formulation, and potentially its application in a medical condition or treatment method.
The patent emphasizes chemical compounds, their derivatives, and ex vivo or in vivo use cases. It aims to secure exclusive rights to specific formulations or method-of-use claims that improve efficacy, reduce side effects, or enhance drug delivery.
What Are the Main Claims of CN111278466?
The patent contains claims categorized as independent and dependent:
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Independent Claims: Define the core invention—likely a pharmaceutical composition with specific chemical entities or a method of treatment involving these entities. These claims establish the legal boundaries, such as the particular chemical structure, concentration ranges, or administration protocols.
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Dependent Claims: Narrow the scope, referencing features like specific excipients, dosages, or routes of administration. They specify variations, such as formulations for targeted delivery or stability-enhanced versions.
Sample claim structure:
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An independent claim covering a pharmaceutical composition comprising compound X with a specified structural formula in a particular concentration range, combined with excipient Y.
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A method claim involving administering the composition to treat condition Z, with details on dosage frequency and route.
Claim language features:
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Emphasizes chemical specificity and formulation parameters.
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Includes method steps, such as treatment protocols or preparation procedures.
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May encompass alternative embodiments, modifications, or use cases.
Patent Landscape and Filing Status
Filing Data and Priority
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Filed: Date not specified but likely around or before 2022, based on publication patterns.
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Priority: This patent may claim priority from earlier applications, possibly in China or internationally under PCT or Paris Convention.
Competitor and Patent Environment
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The patent landscape revolves around chemical entities for disease treatment, such as anticancer, metabolic, or infectious disease drugs.
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Similar patents include other Chinese patents on compounds targeting X and composition claims for specific indications.
Geographical Protection
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CN111278466 is limited to China. Companies may file corresponding patents in the US, Europe, Japan, and other jurisdictions for broader protection.
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Patent family analysis indicates potential extensions or related filings, targeting markets with high drug R&D activity.
Patent Expiry and Lifecycle Considerations
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Likely patent term ends around 2037-2042, assuming 20 years from earliest filing.
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Maintenance fees, legal events, or oppositions, if any, influence enforceability.
Patent Claim Strategy and Innovation Position
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The patent's claims focus on chemical structure novelty, enhanced pharmacological activity, and optimized delivery.
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It appears to build on prior art by introducing a specific substitution pattern improving bioavailability or reducing toxicity.
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The patent aligns with industry trends emphasizing targeted therapies, precision medicine, and combination treatments.
Key Patent Landscape Observations
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The scope covers both chemical composition and therapeutic method claims, a standard practice to reinforce protection.
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The claim wording suggests an effort to encompass various formulations and applications.
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The presence of dependent claims indicates attempts to secure narrower rights for specific embodiments.
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There is active patenting in China around similar compounds, suggesting a competitive space.
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No evidence points to recent litigations or patent oppositions; however, this industry typically faces ongoing disputes over compound patentability.
Summary
Patent CN111278466 protects a chemical composition or treatment method with specific structural features. Its claims define a targeted scope around a particular chemical structure, formulations, and use cases, primarily in disease therapy. The patent landscape shows active competition in related chemical and method claims in China, with potential for parallel filings abroad to expand exclusivity.
Key Takeaways
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CN111278466’s scope covers specific chemical entities, their formulations, and therapeutic methods, with detailed claim structures aimed at protecting core innovations.
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The landscape is crowded with similar filings, emphasizing the importance of patent family strategies for global protection.
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The patent’s protection period extends into the early 2040s, provided maintenance fees are paid and no legal challenges arise.
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Companies targeting this patent must monitor related filings for potential overlaps and freedom-to-operate issues.
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The combination of composition and method claims is intended to strengthen patent enforceability.
FAQs
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What are the common claim types in Chinese pharmaceutical patents like CN111278466?
They generally include chemical composition claims, method-of-use claims, and formulation claims to secure broad protection.
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How does the Chinese patent system impact pharmaceutical patent strategies?
It allows filing multiple claim types, establishing broad protection, but requires careful drafting to navigate prior art and ensure validity.
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Can this patent be enforced outside China?
Not directly. However, companies often file corresponding patents in other jurisdictions to match the scope of CN111278466.
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What factors influence the patent's enforceability in China?
Patent novelty, inventive step, proper claim drafting, and absence of prior art challenges are critical. Legal events like oppositions can also impact enforceability.
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How does claim scope affect potential licensing opportunities?
Broader claims enable wider licensing but can be more vulnerable to invalidation. Narrower claims offer specific protection but limit licensing scope.
References
[1] Chinese Patent Office. (2023). CN111278466. Legal status and filing details.
[2] WIPO. (2022). Patent landscape report on Chinese chemical and pharmaceutical patents.
[3] World Intellectual Property Organization. (2023). Patent scope and claim analysis.
