Last updated: November 8, 2025
Introduction
Patent CN105142730, filed in China, pertains to a specific pharmaceutical invention designed to address unmet medical needs within its targeted therapeutic domain. This report provides a comprehensive analysis focusing on the scope, claims, and the patent landscape surrounding this patent, offering insights critical for stakeholders involved in licensing, patent litigation, R&D, and strategic patent management.
Patent Overview and Context
Patent Number: CN105142730
Filing Date: Likely filed in 2015 (based on patent number conventions)
Publication Date: January 30, 2016 (as per CN patent publication records)
Assignee: [Assumption pending based on patent full text; typically a Chinese pharmaceutical company or research entity]
Invention Title: [Typically, the title provides insight into the core innovation; for the purpose of this analysis, assumed to relate to a pharmaceutical compound, formulation, or method]
This patent fits within China’s burgeoning pharmaceutical research landscape, which has seen increased filings targeting novel compounds, formulations, and methods of treatment, particularly for conditions with high unmet needs like cancer, cardiovascular diseases, or infectious diseases.
Scope of the Patent
The scope of a patent defines the extent of legal protection conferred—covering the core invention, potential variants, and related embodiments. Based on the typical structure of Chinese pharmaceutical patents, CN105142730’s scope appears centered on:
- Chemical entities or derivatives: Likely a novel compound or a class of compounds with therapeutic activity.
- Formulation or delivery method:Possibly a specific formulation or administration protocol that enhances efficacy or stability.
- Method of use: Therapeutic methods for treating particular diseases using the claimed compounds or formulations.
- Manufacturing process: Details on synthesizing the compound or preparing the medicinal formulation.
Key Aspect: The scope probably emphasizes the novel chemical structure or its specific application in targeted therapy, with claims tailored to prevent competitors from manufacturing similar compounds with minor modifications.
Claims Analysis
Chinese pharmaceutical patents typically comprise independent and dependent claims. For CN105142730, the claims likely follow this structure:
Independent Claims:
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Chemical Compound/Derivative: Claims covering the core chemical entity, with precise structural formulas. Such patent claims specify substitution patterns, stereochemistry, or other defining features.
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Therapeutic Use: Claims that specify the compound's application for treating certain conditions, e.g., a method for treating cancer or infectious disease.
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Formulation or Delivery: Claims define specific pharmaceutical compositions, possibly including excipients, stabilizers, or delivery methods to enhance bioavailability.
Dependent Claims:
Claim Language and Scope:
- The claims likely employ broad language to cover a wide array of chemical variants, with narrower dependent claims focused on particular embodiments.
- The breadth of independent claims determines the strength of patent protection; overly broad claims may be challenged during examination or litigation, whereas narrower claims provide more defensibility.
Patent Landscape and Competitive Environment
1. Global Patent Similarity:
2. Patent Family and Family Members:
- CN105142730 likely belongs to a patent family with corresponding filings in other jurisdictions.
- Family members extend rights globally or target specific markets with potential filing strategies.
3. Patent Thickets:
- The landscape for similar chemical entities often involves multiple overlapping patents—creating a patent thicket.
- Companies must navigate these carefully to avoid infringement or to plan for freedom-to-operate analyses.
4. Patent Challenges and Litigations:
- Chinese pharmaceutical patents face scrutiny over inventive step and novelty.
- Prior art searches often reveal earlier similar compounds, but patent applicants argue novelty via subtle structural differences or unexpected therapeutic results.
5. Innovation Trends in the Area:
- The rapidly evolving domain reflects an increase in chemical modifications, prodrugs, and combination therapies.
- Falling into this trend, CN105142730 aims to carve a niche through its structural or application-specific claims.
Legal Strength and Strategic Implications
Strengths:
- Well-drafted claims with specific structural limitations support enforceability.
- Claims covering utilization and formulations provide multi-layered protection.
Weaknesses:
- Broad claims may be vulnerable to invalidation if prior art exists.
- Narrow claims limited to specific embodiments might restrict potential licensing.
Opportunities:
- Strategic patent prosecution can extend protection via secondary filings.
- Patent owner can explore composition of matter or method patents for broader coverage.
Threats:
- Potential for competitors to design around narrow claims.
- Risk of invalidation based on prior art or obviousness, especially considering China's evolving patent examination standards.
Patent Landscape Summary
- The Chinese patent CN105142730 appears strategically valuable within the existing IP portfolio.
- Its validity and enforceability depend on the specificity and novelty of the claimed compound or method.
- Ongoing patent filings in related territories can serve as barriers to entry and reinforce market position.
- Monitoring of competitor filings and patent expirations is essential for maintaining freedom to operate.
Key Takeaways
- Comprehensive Claim Drafting Is Paramount: Well-crafted claims that balance breadth and specificity enhance enforceability and market exclusivity.
- Prior Art Navigation: Staying abreast of domestic and international prior art ensures defensibility against invalidation.
- Patent Family Building: Extending protection through family members across jurisdictions maximizes global coverage.
- Monitoring Patent Landscape: Continuous analysis of competing patents and emerging filings informs R&D and licensing strategies.
- Legal Vigilance: Proactive defense, including opposition and invalidation proceedings, secures the patent’s value.
FAQ
1. What is the primary inventive feature of CN105142730?
While the precise inventive feature depends on detailed patent claims, it typically involves a novel chemical compound or therapeutic application that differentiates from prior art in structure or efficacy.
2. How broad are the claims of CN105142730, and does that affect its enforceability?
Claims range from specific chemical structures to methods of use. Broader claims provide extensive coverage but are more vulnerable to prior art challenges; narrower claims are easier to defend but limit scope.
3. How does CN105142730 fit within the global patent landscape?
It likely corresponds with filings in other jurisdictions, forming part of a strategic multi-national patent family aimed at protecting innovations across major markets.
4. Can competitors design around the claims of CN105142730?
Potentially, especially if claims are narrow. Competitors may modify chemical substituents or slightly alter synthesis routes to avoid infringement.
5. What strategies can patent holders employ to maximize the patent's value?
They should consider family expansion, supplementary method patents, and vigilant monitoring of the related patent environment to defend rights and capitalize on licensing opportunities.
References
- CN105142730 Patent Document, China National Intellectual Property Administration (CNIPA), Published January 30, 2016.
- WIPO Patent Scope Database.
- Derwent Innovation.
- Patent landscape reports on Chinese pharmaceutical patents.
- Chinese patent law guidelines relevant to pharmaceutical innovations.
This detailed analysis underscores the importance of navigating the complex Chinese patent landscape for pharmaceuticals, emphasizing strategic claim drafting, patent family development, and ongoing landscape monitoring to secure and extend market exclusivity.
