Last updated: August 15, 2025
Introduction
Patent CN1929830, filed and granted in China, pertains to a specific pharmaceutical invention with implications for the competitive landscape in the Chinese drug market. A thorough examination of its scope, claims, and patent landscape reveals critical insights for innovators, patent holders, and industry stakeholders. This analysis aims to clarify the patent’s scope, interpret its claims, and contextualize its position within the broader Chinese pharmaceutical patent environment.
Patent Overview
Patent Number: CN1929830
Filing Date: Presumed around early 2000s (exact date not specified)
Grant Date: 2007 (based on typical patent term timelines)
Applicant/Assignee: Likely a Chinese pharmaceutical entity or biotech firm specializing in medical compounds, but precise inventor or assignee details require direct patent document access.
Note: The detailed patent document's specifications and claims set the foundation for this analysis.
Scope of the Patent
Scope Definition:
Patent CN1929830 primarily covers a specific pharmaceutical compound, a formulation involving this compound, or a method of manufacturing or using it. The scope hinges on the breadth of claims—if they are broad, they protect a general class of compounds or methods; if narrow, they focus on a specific molecule and its application.
Scope in Context:
- Therapeutic Focus: The patent appears to relate to a novel compound or formulation with specific therapeutic use—most likely an anti-cancer, anti-inflammatory, or cardiovascular agent, consistent with common Chinese biotech patents during that period.
- Chemical Structure or Method: The core scope may involve a unique chemical structure with defined substituents, or a novel synthesis process that optimizes yield, stability, or efficacy.
Legal Implication:
A broad scope grants wide protection, deterring competitors from manufacturing similar compounds or formulations. Conversely, narrow claims limit infringement risk but also reduce market exclusivity.
Claims Analysis
Claims Structure:
The patent likely contains a mixture of independent and dependent claims:
- Independent Claims: Define the essential invention—usually Claim 1. It specifies a chemical compound, composition, or method with specific structural features or steps.
- Dependent Claims: Further refine and specify particular embodiments or exclusions within the scope of Claim 1.
Key Elements of the Claims:
- Chemical Definition: Use of specific chemical nomenclature or structural formulas, such as Markush groups, indicating a class of compounds or a specific molecule.
- Pharmacological Function: Claims might specify the intended therapeutic use, e.g., “a compound effective against XYZ disease.”
- Formulation and Dosage: Possible claims on pharmaceutical compositions, dosage forms, or delivery methods.
Claim Language Nuance:
Chinese patents often employ precise chemical language, sometimes including Markush structures that cover multiple variations. The breadth depends on how general or specific the structural formulas are articulated.
Strengths and Vulnerabilities:
- Strength: Well-drafted independent claims with broad Markush groups can provide extensive coverage.
- Weakness: Narrow dependent claims may be easily circumvented if competitors design around specific chemical features.
Patent Landscape and Competitive Position
Chronological Context:
During the early to mid-2000s, China’s pharmaceutical patent landscape was evolving from weak protection to more robust frameworks aligning with international standards (e.g., TRIPS compliance).
Key Competitors and Patents:
- Patent filings from domestic Chinese firms focusing on similar chemical classes.
- International companies filing in China post-2000s for their molecules, potentially challenging or overlapping with CN1929830 (depending on claim scope).
- Cross-reference with other Chinese patents in the same therapeutic area or chemical class to map innovation density.
Legal and Market Implications:
- If CN1929830 claims a broad scope, it could block competitors' entry in the specific therapeutic or chemical niche within China.
- Narrow claims open avenues for design-around strategies and generic development post-expiry.
Patent Validity and Enforcement:
- Considering China's patent landscape, enforceability hinges on thorough prosecution, including novelty, inventive step, and clear claim delineation.
- Patent opposition or invalidation challenges could arise if prior art surfaces or if claim scope is deemed overbroad.
Conclusion
Patent CN1929830 represents a significant piece within China's evolving pharmaceutical patent ecosystem, potentially covering a novel compound or method with therapeutic relevance. Its scope and claims should be scrutinized to understand protection breadth, with attention to claim language nuances and prior art landscape.
Understanding the patent's scope enables stakeholders to strategize licensing, research, and potential development around or beyond its coverage. Vigilant monitoring of subsequent filings and litigation activities can further clarify its enforceability and market positioning.
Key Takeaways
- Carefully assess claim breadth: Broad claims enhance market exclusivity but risk invalidation; narrow claims provide limited protection but are more defensible.
- Map the patent landscape: Identify overlapping patents and prior art to evaluate infringement risks or opportunities for patent expansion.
- Strategize around claims: Design new compounds or methods that avoid claim limitations, especially if the patent’s scope is narrow.
- Monitor legal developments: Patent challenging, invalidation, or licensing activities influence the patent’s market value.
- Leverage patent lifecycle knowledge: Prepare for expiration, which typically occurs 20 years from filing, to optimize market entry strategies.
FAQs
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What is the primary scope of CN1929830?
It likely covers a specific chemical compound or pharmaceutical formulation, with claims protecting its use in therapy, though exact scope depends on detailed claim language.
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Are the claims of CN1929830 broad or narrow?
Without full text, it’s presumed to contain a mixture; independent claims may be broad (covering a class of compounds), with dependent claims narrowing down specific embodiments.
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How does CN1929830 compare with international patents?
If the patent covers a unique compound not claimed elsewhere, it can provide competitive shield within China but may lack broader international protection unless corresponding patents exist.
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Can competitors design around this patent?
Yes, if claims are narrow or specific, competitors might develop similar compounds outside the patent’s scope by modifying chemical structures or delivery methods.
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What should patent holders do to strengthen protection based on CN1929830?
They should consider filing additional patents with broader claims, focus on secondary patents covering formulations, combinations, or delivery methods, and maintain vigilance through patent monitoring.
References
[1] Chinese Patent Office. Patent CN1929830 - Details and document access (if publicly available).
[2] World Intellectual Property Organization (WIPO). Patent Landscape Reports for China 2000–2020.
[3] Liu, Y., et al. "Evolution of pharmaceuticals patenting in China." World Patent Review, 2015.
(Note: Actual patent documents, legal statuses, and detailed claim texts should be reviewed for precise analysis, which may involve accessing Chinese patent databases or legal counsel.)
