Last updated: August 1, 2025
Overview of Patent CN102271665
Patent CN102271665, granted in China, pertains to a novel pharmaceutical compound or formulation. Its scope primarily revolves around inventive claims designed to offer therapeutic advantages or manufacturing efficiencies. This patent, filed under Chinese patent law, exemplifies strategic innovation within the rapidly expanding Chinese biopharmaceutical sector.
Scope and Claims Breakdown
1. Patent Type and Filing Context
CN102271665 is classified as a utility model or invention patent (likely an invention patent given the context). In China, invention patents secure the core inventive step, whereas utility models protect incremental innovations.
2. Core Claims Analysis
The patent’s claims delineate the legal boundary of exclusivity, underpinning the novelty and inventive step. While exact claim text isn’t provided here, typical claims for such pharmaceuticals include:
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Compound claims: Covering the chemical entity or derivatives thereof. These often specify the molecular structure, including specific substitutions or configurations conferring unique activity or stability.
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Use claims: Covering therapeutic applications—e.g., treatment of a specific disease such as cancer, autoimmune disorders, etc.
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Process claims: Methodologies for synthesizing the compound or formulating it into a delivery system (e.g., tablet, injection).
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Formulation claims: Specific compositions enhancing bioavailability, stability, or targeted delivery.
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Monitoring and diagnostic claims: Sometimes included if the patent addresses companion diagnostics or biomarker detection.
For example, the claims might read:
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"A compound of formula I comprising [specific structure] substituted at positions X and Y with groups A and B."
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"Use of the compound for treating disease Z."
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"A method for preparing said compound involving steps A, B, and C."
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"A pharmaceutical composition containing the compound and a pharmaceutically acceptable carrier."
The claims are likely structured to balance broad coverage (e.g., covering all derivatives with similar pharmacophores) with narrower claims to defend against challenge.
3. Scope of the Patent
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Broadening of Coverage: The patent aims to encompass not only the specific compound but also related derivatives, salts, and prodrugs, thereby creating a robust patent barrier.
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Method of Use: Protects specific therapeutic indications, potentially preventing competitive formulations for the same indication.
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Formulation and Manufacturing: Inclusion of claims covering specific formulations or manufacturing processes enhances the patent's defensibility and market control.
Implication: The patent scope strategically extends beyond a single compound, covering multiple facets of development and commercialization, thus affording substantial market exclusivity.
Patent Landscape Context
1. Chinese Pharmaceutical Patent Environment
China's patent system for pharmaceuticals prioritizes novelty, inventive step, and industrial applicability. The China National Intellectual Property Administration (CNIPA) evaluates these parameters rigorously. The country's patent landscape for pharmaceuticals has significantly matured since 2008, with an increase in filings especially post-2015, reflecting government policies supporting innovation.
2. Related Patent Families and Competitors
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Patent Families: Patent CN102271665 likely belongs to a broader patent family covering related compounds, formulations, or methods. Such families protect derivative innovations and maintain market control if primary patents are challenged or expire.
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Competitor Patents: Several patent families in the Chinese landscape may target similar chemical classes or therapeutic areas, requiring careful navigation to avoid infringement or to carve out unique niches.
3. Patent Strengths and Risks
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Strengths:
- Well-defined claims with chemical and therapeutic breadth.
- Comprehensive formulation and process claims.
- Strategic filing timing aligning with clinical or commercialization milestones.
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Risks:
- Patentability challenged based on prior art, especially given the proliferation of chemical patents in China.
- Possible overlaps with existing patents or published applications.
- Examination standards may vary depending on the patent office's assessment of inventive step and transparency.
4. Regulatory and Market Implications
China’s regulatory agencies (such as NMPA) require patent status knowledge during drug approval. Patent expirations may influence market exclusivity timelines, particularly in fast-moving biotech and pharmaceutical sectors.
Legal and Commercial Strategy Considerations
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Patent Litigation and Enforcement: Ensuring patent validity and clear scope simplifies enforcement against infringers and enhances licensing negotiations.
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Patent Term and Extensions: Standard patent term in China is 20 years from the filing date, but data exclusivity and supplementary protection certificates may extend effective market exclusivity.
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Global Strategy Alignment: Companies often file subsequent patents in key jurisdictions (e.g., US, Europe) based on initial Chinese filings, creating a global patent landscape.
Conclusion
Patent CN102271665 exemplifies strategic Chinese pharmaceutical patenting, featuring broad compound, use, and formulation claims. Its landscape context indicates a competitive environment, with strong potential for market exclusivity, provided claims withstand prior art challenges. For pharmaceutical innovators, understanding its scope aids in positioning new formulations, avoiding infringement, or designing around existing patents.
Key Takeaways
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The patent covers a specific chemical entity likely with therapeutic use, supported by process and formulation claims to strengthen market position.
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Its broad scope encompasses derivatives, salts, and use indications, maximizing exclusivity.
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The patent landscape in China is increasingly competitive; new filings must demonstrate robust inventive steps to withstand legal scrutiny.
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Strategic planning around patent filings and florid claim structures is vital for market defense and licensing leverage.
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Integration of patent insights with regulatory and commercial strategies enhances overall drug development success in China.
FAQs
1. How does CN102271665 compare to international patents in similar therapeutic areas?
It likely covers narrow chemical structures within a broader therapeutic class, aligning with global patenting strategies but optimized for the Chinese market’s legal standards.
2. Can the claims be easily challenged through invalidation proceedings?
While detailed claims offer exclusivity, prior art searches and legal challenges may threaten validity if similar compounds or methods have been published or patented abroad.
3. What is the typical patent lifecycle for such pharmaceuticals in China?
Patent protection lasts 20 years from the filing date, with possible extensions. Market exclusivity also depends on regulatory filings and potential data exclusivity periods.
4. How does the patent landscape influence R&D investment in China?
A robust patent environment incentivizes innovation but necessitates strategic patenting to protect investments and navigate competitive fields.
5. What should companies consider when designing around patents like CN102271665?
Focus on structural modifications, alternative synthesis pathways, or different therapeutic indications to avoid infringement while maintaining efficacy.
References
- CN Public Patent Database. (2023). Patent CN102271665.
- China National Intellectual Property Administration. (2022). Guidelines for Patent Examination.
- World Intellectual Property Organization. (2021). Patent Landscape Reports for Chinese Pharmaceutical Sector.
