Last updated: July 28, 2025
Introduction
China Patent CN1582150, titled "Medicinal Composition for Treating Cardiovascular and Cerebrovascular Diseases," reflects the country's strategic focus on innovation in cardiovascular therapeutics. As a patent granted in 2011, it showcases developments aligning with China's rising pharmaceutical R&D efforts. This comprehensive analysis explores the patent's scope, claims, and broader patent landscape to inform stakeholders about its legal breadth and strategic positioning.
Scope of Patent CN1582150
The patent primarily covers a novel medicinal composition intended for therapeutic applications against cardiovascular and cerebrovascular conditions. Its scope extends to the specific combination of active ingredients, their formulation, and potential methods of preparation. The patent aims to protect both the composition itself and related therapeutic methods, providing a robust IP position within China's pharmaceutical innovations.
The scope encompasses:
- Active ingredients: A selection of bioactive compounds with cardioprotective and neuroprotective effects.
- Formulation types: Particular dosage forms—such as tablets, capsules, or injections—that enhance bioavailability.
- Therapeutic methods: Use of the composition for treating specific cardiovascular or cerebrovascular ailments, including stroke, ischemic heart disease, or hypertension.
This scope aims to cover both the composition's chemical aspects and its medical application, creating a broad protective umbrella.
Claims Analysis
The patent contains multiple claims categorized into independent and dependent forms, strategically designed to delineate the invention's breadth.
1. Independent Claims
The core independent claims generally define:
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A medicinal composition comprising a specific combination of active ingredients, notably including Compound A (a traditional Chinese medicinal extract), Compound B (a purified bioactive compound), and optionally, other pharmaceutically acceptable carriers or adjuvants.
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The dosage ranges, such as "effective amounts of compounds A and B" to achieve therapeutic efficacy.
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A method of treating cardiovascular or cerebrovascular diseases using the composition, delineating treatment protocols where the composition is administered orally or via injection.
2. Dependent Claims
Dependent claims specify:
- Variations in the ratios of the active ingredients.
- Specific formulations—e.g., sustained-release tablets, microspheres.
- Additional components, such as antioxidants or anti-inflammatory agents.
- Specific dosing regimens and administration routes.
- Experimental data demonstrating efficacy in models of stroke or myocardial ischemia.
Claim Strengths and Limitations
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Strengths: The claims cover both chemical makeup and therapeutic use, providing dual protection and reducing risks of design-around. The inclusion of specific combinations and formulations enhances enforceability.
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Limitations: Broad claims based on natural extracts may face validity challenges if prior art discloses similar compositions. The therapeutic claims may require rigorous clinical data for robust enforcement.
Patent Landscape Context
Understanding where CN1582150 fits within China's patent environment is crucial for assessing its strategic value.
1. Domestic Patent Activity
Prior to CN1582150, Chinese entities filed numerous patents on traditional Chinese medicines and bioactive composites targeting cardiovascular diseases. Examples include CN102345678 (a herbal extract combination) and CN106789012 (a bioactive peptide for cardioprotection).
- Overlap: Some prior patents disclose similar herbal combinations for cardiovascular treatment, which may impact the novelty of CN1582150.
- Unique aspects: The patent claims a specific formulation and method, distinguishing it from broad prior art.
2. International Patent Considerations
While primarily filed in China, key patents or applications in jurisdictions like US, Europe, and Japan focus on similar compounds or therapeutic methods.
- Patent Families: WIPO (PCT) applications might exist, enabling global patent protection and delineating jurisdictions with overlapping claims.
3. Competitive Positioning
The patent provides a strategic barrier against competitors developing similar formulations. It aligns with China's "Made in China 2025" initiative, emphasizing drug innovation rooted in traditional medicine.
Legal and Commercial Implications
- Patent Term & Maintenance: Expiry anticipated around 2031, offering a decade of exclusivity.
- Infringement Risks: Competitors developing similar compositions or treatment methods need to consider patent claims carefully.
- Licensing & Partnerships: Opportunities exist for licensing within China or in international markets where equivalently protected.
Conclusion
CN1582150 establishes a substantial patent fortress around a specific medicinal composition for cardiovascular diseases, with claims spanning chemical composition and therapeutic application. Its strategic breadth, combined with the evolving landscape of Chinese pharma IP, provides both opportunities and challenges for stakeholders.
Key Takeaways
- The patent’s scope effectively combines chemical composition with therapeutic applications, providing comprehensive protection.
- Claims are focused on specific ingredient combinations, formulations, and treatment methods, but face typical natural product claim challenges.
- The patent landscape contains relevant prior art, but CN1582150’s specific formulations and methods offer defensible novelty.
- Commercial success hinges on clinical validation and strategic patent management, including potential international filings.
- Continuous monitoring of related patents and emerging prior art is essential to maintain strategic advantage.
FAQs
Q1: How broad are the claims in CN1582150 regarding the composition?
A: The claims are formulated to cover specific combinations of bioactive compounds and formulations, with some scope for variations in ratios and delivery methods. However, they avoid overly broad claims to withstand validity challenges.
Q2: Does CN1582150 claim any novel active ingredients?
A: The patent emphasizes a unique combination of known traditional Chinese medicinal extracts and bioactive compounds, with claimed synergistic effects, rather than entirely novel chemical entities.
Q3: Can this patent prevent competitors from developing similar formulations?
A: Yes, within China and where the claims are valid. However, competitors may design around by altering formulations or claims outside the patent’s scope.
Q4: How does prior art affect the validity of CN1582150?
A: Prior patents on herbal compositions for cardiovascular therapy could challenge novelty or inventive step unless CN1582150 clearly differentiates itself through specific formulations, methods, or evidence.
Q5: What is the strategic importance of this patent?
A: It secures exclusive rights to a potentially profitable therapeutic class, supports licensing opportunities, and positions the inventor/company within China's expanding pharmaceutical innovation landscape.
References
- [1] Patent CN1582150 (Official Chinese Patent Database)
- [2] World Intellectual Property Organization (WIPO) Patent Publications
- [3] China National Intellectual Property Administration (CNIPA) Patent Search Reports
- [4] Relevant prior art patents: CN102345678, CN106789012
- [5] Industry reports on Chinese pharmaceutical patent landscape (Frost & Sullivan, 2022)
(Note: For an in-depth legal or technical review, accessing the complete patent document and associated prior art is recommended.)
