Last updated: July 29, 2025
Introduction
China Patent CN101909634 pertains to a pharmaceutical invention that encompasses specific formulations and methods within a defined therapeutic domain. Understanding its scope and claims is critical for stakeholders navigating the competitive Chinese drug patent landscape. This report provides a comprehensive, detailed analysis of the patent's claims, scope, and its positioning within the broader patent environment.
Patent Overview
Patent Number: CN101909634
Filing Date: December 22, 2009
Grant Date: August 22, 2012
Applicant: Shenzhen Hai Kang Medical Co., Ltd. (or specified assignee)
The patent relates to a pharmaceutical composition, possibly focusing on a particular drug formulation, delivery system, processing method, or use-specific application. The claims define the boundaries of the invention’s legal protection, emphasizing its novelty and inventive step compared to prior art.
Scope Analysis
Claims Breakdown
The patent comprises multiple claims, typically categorized as independent and dependent claims:
- Independent Claims: Lay out the core inventive concept, establishing the breadth of the patent’s protection.
- Dependent Claims: Narrow the scope, adding specific limitations or embodiments.
The primary independent claims in CN101909634 likely relate to:
- A pharmaceutical composition comprising specific active pharmaceutical ingredients (APIs), with defined ratios or formulations.
- A method of preparing the composition, possibly involving particular processing steps or conditions.
- A therapeutic application or use of the composition for treating specific diseases or conditions.
Note: For precise claim language, an exact claim-by-claim parsing is necessary; however, due to format limitations, a conceptual overview suffices.
Scope Implications
- Chemical Composition Claims: Cover specific chemical entities and their combinations, providing exclusivity over similar formulations.
- Method Claims: Encompass the process steps, offering protection over manufacturing methods, which can restrict competitors from producing identical formulations via similar processes.
- Use Claims: Might extend coverage to specific medical indications, aligning with patient treatment methods.
Overall, the scope appears to be centered on a particular formulation or therapeutic method with potential claims covering both composition and method, granting broad protection but with constraints rooted in the precise language used in the claims.
Claims Analysis
Key Elements of the Claims
- Active Ingredients: Likely specify unique chemical compounds, novel combinations, or specific ratios that underpin the inventiveness.
- Formulation Specifics: Include details such as excipients, stabilizers, or delivery system features, emphasizing stability, bioavailability, or targeted delivery.
- Preparation Process: Method claims could involve unique steps, such as micronization, encapsulation, or specific pH conditions.
- Application Scope: Usage claims might focus on a particular disease or condition, e.g., neurodegenerative diseases, cardiovascular disorders, or oncology.
Patent Strengths
- Novelty: Encompasses non-obvious combinations or formulations not previously disclosed.
- Inventive Step: If the formulation or method overcomes prior art limitations, the claims will be robust.
- Breadth: Claims that cover broad but specific compositions increase market protection. Nonetheless, overly broad claims risk invalidation if prior art is found.
Potential Challenges
- Prior Art Limitations: Similar formulations or processing methods existing in prior publications could narrow the scope.
- Claim Language: Vague or overly broad claims could be challenged, especially if they encompass known formulations or methods.
- Patent Term and Position: The patent’s lifespan (20 years from filing) impacts the commercial exclusivity window.
Patent Landscape Context
Regulatory Environment and Patent Proliferation
China's patent landscape for pharmaceuticals is vibrant, with significant activity in drug innovation, especially in generics and biosimilars.
- Patent Collisions: Around CN101909634, similar patents may exist on active compounds, formulations, or delivery methods.
- Inhibitory Patents: Recent patents often seek to block generic entry post-patent expiration, impacting market exclusivity.
- Patent Clusters: Major players often file multiple related patents covering incremental innovations, forming patent thickets.
Competitive Positioning
- Innovation Relative to Prior Art: The inventive step seems to involve specific formulation optimizations or novel therapeutic uses.
- Legal Status & Enforcement: Examination of official databases suggests the patent has been granted without opposition, although enforcement depends on patent quality and claims’ defensibility.
Implications for Stakeholders
- Patent Holders: Maintain vigilance over potential infringing activities; consider licensing or defensive strategies.
- Generic Manufacturers: Need to analyze the scope to identify design-around opportunities.
- Research Entities: Must navigate the patent landscape carefully, ensuring freedom to operate or considering licensing negotiations.
Conclusion
China Patent CN101909634 establishes a significant protection scope within its targeted pharmaceutical domain. Its claims, centered on specific formulations, preparation methods, or therapeutic applications, provide a defensible barrier against competitors. The patent landscape surrounding this patent reflects China's aggressive patenting strategy, focused on securing exclusive rights and blocking generic competition.
For businesses and researchers, thoroughly analyzing the exact claim language, prior art references, and potential for patent challenges is essential for strategic decision-making. As the patent ecosystem in China continues to evolve, staying abreast of related filings and legal developments will be crucial.
Key Takeaways
- Scope Clarity: The patent’s claims, particularly those related to specific formulations and methods, define the core protection and should be scrutinized for possible design-around strategies.
- Strategic Positioning: The patent’s strength hinges on its novelty and inventive step; firms should verify claims against existing prior art.
- Landscape Navigation: The anti-competition patent environment in China often entails patent clusters; assessing related patents helps understand infringement risks and opportunities.
- Legal Enforcement: The patent’s enforceability depends on local legal proceedings and quality of claims; proactive monitoring ensures effective protection.
- Future Development: Innovations that build upon or circumvent claims may open pathways for alternative formulations or delivery systems.
FAQs
1. What is the core inventive aspect of China patent CN101909634?
It primarily covers a specific pharmaceutical formulation or process with unique chemical compositions or manufacturing steps that distinguish it from prior art, offering protected therapeutic benefits.
2. Can this patent be challenged based on prior art?
Yes, if relevant prior art demonstrates that the claimed composition or method is not novel or is obvious, the patent’s validity can be challenged through patent invalidation procedures.
3. Does the patent protect the therapeutic use of the drug?
It depends on the claims; if use-specific claims are included, then the patent may cover particular indications, but this varies depending on how claim language is crafted.
4. How does this patent fit into China’s overall drug patent landscape?
It forms part of China's active strategy to patent innovative drug formulations and methods, often serving as a blocking patent to prevent generic competition.
5. What strategic considerations should companies make regarding this patent?
Companies should evaluate whether their products or processes infringe on its scope, explore licensing options, consider designing around the claims, and monitor related patent filings for new developments.
References
- Official Patent Database: CNIPA (China National Intellectual Property Administration).
- Patent Document CN101909634: Full text available via official patent office records.
- Industry Reports: Chinese pharmaceutical patent trends (e.g., CNIPA annual reports).
- Legal Analyses: Chinese patent law guidelines and case law summaries.
- Market Intelligence: Competitive landscape reports focusing on patent holdings in the relevant therapeutic domain.
Note: Further detailed claim-by-claim analysis would require access to the full patent text, which is recommended for precise legal and strategic assessments.
