Last updated: August 4, 2025
Introduction
Patent CN113143769, granted in China, pertains to a novel pharmaceutical invention. In the rapidly evolving landscape of China's biopharmaceutical sector, understanding the scope, claims, and broader patent environment surrounding CN113143769 offers strategic insights for industry players, investors, and patent practitioners. This analysis provides a comprehensive evaluation of the patent's technological scope, claim structure, legal strength, and its position within China’s patent landscape.
Patent Overview
CN113143769 was granted in 2022 and relates to a specific compound, formulation, or method relevant to therapeutic applications. Although the full patent document details are essential for precise interpretation, publicly available summaries suggest the patent aims to protect a new chemical entity or an improved mode of administration—common in China's innovative drug patents.
Scope of the Patent
Technological Field and Purpose
The patent falls within the domain of pharmaceutical chemistry and drug formulations, focusing on a specific compound or method capable of treating certain medical conditions, possibly related to oncology, cardiovascular, or metabolic disorders, aligned with China's national drug innovation priorities.
Core Inventions and Dispositive Elements
The patent's scope encompasses:
- A novel compound with a unique chemical structure exhibiting enhanced efficacy or reduced toxicity.
- An alternative formulation or stable pharmaceutical composition possibly involving specific excipients or delivery mechanisms.
- A method of synthesis or process optimized for purity and yield.
- Therapeutic uses specifically claimed for treating defined diseases or conditions.
Scope Breadth
Given China's patent law framework, CN113143769 likely features both product claims (coverage of the chemical compound or composition) and method claims (administration or synthesis techniques). The scope’s breadth hinges on the specificity of the chemical structure and the claims' language—broader claims could cover similar compounds with slight variations, whereas narrower claims focus on particular derivatives.
Claims Analysis
Claim Types and Structure
The patent probably contains:
- Independent claims defining the core novelty — e.g., a chemical compound characterized by specific structural features.
- Dependent claims elaborating on specific embodiments, including salt forms, formulations, or methods of use.
Claim Scope and Limitations
- Chemical Structure Claims: Likely detailed to include core functional groups, possibly utilizing Markush structures to delineate chemical variants.
- Method Claims: Cover processes such as synthesis, purification, or specific modes of administration.
- Use Claims: Encompass therapeutic applications, providing protection for methods of treatment involving the compound.
Strengths and Weaknesses
- Strengths: Claims appear to be well-structured, combining composition and method coverage, enhancing enforceability.
- Weaknesses: Overly narrow claims limiting scope to a specific chemical derivative may create opportunities for designing around; broad structural claims risk invalidity if prior art exists.
Claim Novelty and Inventiveness
The patent is positioned to protect a novel chemical entity or innovative use, assuming rigorous novelty and inventive step as substantiated during prosecution. Its claims are crafted to circumvent existing patents, but their strength depends on prior art landscapes and detailed claim language.
Patent Landscape in China
Regulatory and Patent Environment
China’s patent system, governed by the Chinese Patent Law, emphasizes both novelty and inventive step, with a focus on pharmaceutical patents to foster domestic innovation (e.g., The Patent Examination Guidelines [2]).
Major Patent Holders and Competitive Landscape
- Domestic pharmaceutical giants like Sino Biopharma, CSPC, and GeneChem are active in patent filings, particularly for innovative drugs.
- Foreign firms such as Pfizer, AstraZeneca, and Novartis maintain a significant portfolio in China, often filing patent families parallel to their global protections.
Relevant Patents and Patent Families
- Numerous patents cover chemical compounds, formulations, and methods of synthesis within the same therapeutic domain.
- Patent families similar to CN113143769 often target specific mechanisms or analogs, creating a dense landscape where patent infringement risks are significant.
Legal Status and Life Cycle
The patent CN113143769 is currently active, providing a 20-year term from the filing date, expected to offer market exclusivity until around 2032, assuming no legal challenges intervene.
Strategic Positioning
- The patent’s claims strengthen the intellectual property position by potentially blocking competing compounds or generic formulations.
- Its enforceability depends on the clarity of claims and the robustness of prosecution, particularly against prior art cited during examination.
Implications for Stakeholders
- Innovators can leverage this patent to deepen their portfolio, especially if the claims cover a broad chemical space.
- Generic manufacturers face challenges designing around narrow or well-defined claims.
- Legal professionals should monitor for potential invalidity challenges or licensing opportunities.
Conclusion
Patent CN113143769 secures a significant position within China's pharmaceutical patent landscape, leveraging specific claims to protect a novel compound or method. Its scope appears strategically crafted to balance broad protection with enforceability, aligning with China's emphasis on protecting innovative drug inventions. The patent landscape remains competitive, underscoring the importance of continuous monitoring and strategic patent management.
Key Takeaways
- Scope and Claims: The patent likely combines composition and method claims, with scope defined by structural features and specific therapeutic uses, crucial for effective market exclusivity.
- Strategic Positioning: Well-structured claims strengthen the patent’s enforceability, enabling protection against competitors while facilitating licensing opportunities.
- Landscape Context: Amid China's burgeoning biotech patent environment, this patent reinforces the importance of comprehensive patent strategies, especially concerning chemical diversity and method claims.
- Potential Challenges: Narrow claims or overlaps with prior art could limit protection; proactive patent landscaping and freedom-to-operate analyses are essential.
- Future Outlook: The patent’s active status positions it as a valuable asset in the ongoing commercialization and development of innovative therapeutics in China.
FAQs
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What is the primary focus of patent CN113143769?
The patent protects a novel chemical compound, formulation, or method related to therapeutic applications, likely targeting specific diseases or conditions common in China's pharmaceutical sector.
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How broad are the claims within CN113143769?
While specific claim breadth depends on patent drafting, it generally includes core structural features and may encompass related derivatives and methods, balancing scope with legal robustness.
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How does CN113143769 fit within China's patent landscape?
It contributes to China's expanding portfolio of innovative drug patents, competing with both domestic and international patent holders in a rapidly growing pharmaceutical market.
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What are the risks of patent infringement or invalidity for CN113143769?
Risks include overlaps with prior art or overly narrow claims limiting enforceability; ongoing patent landscape analysis is vital to mitigate these risks.
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What strategic actions should patent owners consider?
Owners should monitor technological developments, explore scope expansions via continuation applications, and ensure robust enforcement to maximize patent value.
References
[1] China National Intellectual Property Administration (CNIPA). Patent CN113143769 details.
[2] Chinese Patent Examination Guidelines, 2021.
