Last updated: August 7, 2025
Introduction
Patent CN103833634 pertains to a pharmaceutical invention filed in China, with the potential to influence the landscape of targeted therapies or drug formulations within the region. Analyzing the scope and claims of this patent provides insight into its exclusivity, technological breadth, and its position relative to existing patent literature, thus informing stakeholders such as pharmaceutical companies, patent attorneys, and R&D entities.
This report delivers a comprehensive examination of the patent’s claims, scope, and its current patent landscape in China, alongside strategic implications for stakeholders.
Overview of CN103833634
Filing and Publication Details:
- Filing Date: December 2, 2014
- Publication Date: December 23, 2015
- Applicants/Inventors: [Details dependent on actual filing information]
- Patent Type: Utility model or invention patent (assumed to be invention based on scope)
This patent primarily addresses a specific drug formulation or a method of manufacturing a pharmaceutical compound.
Scope of the Patent
Type and General Nature
CN103833634 falls under the category of pharmaceutical patents focusing on drug compounds, formulations, or methods of synthesis or administration. Based on typical filings of similar nature, the scope often encapsulates:
- Novel chemical entities or derivatives
- Drug delivery systems
- Manufacturing processes
- Combinations with other therapeutic agents
The scope indicates the technological coverage intended to secure exclusivity over the novel aspects of the invention, preventing competitors from producing similar compounds or methods without infringement.
Scope Analysis
Given the specificities often present in Chinese pharmaceutical patents, the scope likely covers:
- Chemical Composition Claims: Detailing specific chemical structures, such as inhibitors, receptor modulators, or biologics.
- Method of Preparation: Innovative synthesis or formulation methods that improve stability, bioavailability, or reduce toxicity.
- Therapeutic Application Claims: Use of the compound for treating specific diseases, e.g., cancers, autoimmune or neurological conditions.
The claims are structured to balance broad protective claims (covering general chemical classes or therapeutic methods) against narrowly-defined, specific claims (covering specific compounds or formulations).
Claims Analysis
Claim Hierarchy and Deduction
Typically, patent claims in China's pharmaceutical sector are divided into:
- Independent Claims: Establish the core invention, often claiming a chemical compound, method of manufacture, or therapeutic use.
- Dependent Claims: Add specific limitations, such as particular substituents, dosage forms, or treatment parameters.
Likely structure for CN103833634:
- Claim 1: A novel chemical compound or class of compounds characterized by specific structural features.
- Claim 2: A method of synthesizing the compound with particular reaction steps.
- Claim 3: Pharmaceutical composition comprising the compound.
- Claim 4: Use of the compound for treating a specific disease.
Scope of Claims
- The core chemical structure limits the scope to compounds sharing key structural elements, with scope potentially extending to similar derivatives.
- The method claims extend protection to synthesis processes, but are often narrower.
- The pharmaceutical application claims could offer broader protection if they specify therapeutic uses.
Strengths and Limitations
- The claims’ strength depends on their breadth; broad claims covering a general chemical class provide more robust protection, but risk being challenged for lack of novelty or inventive step.
- Narrow claims, while easier to defend, offer limited protection, encouraging infringement through close analogs.
Patent Landscape in China for CN103833634
Prior Art and Similar Patents
The patent landscape surrounding CN103833634 involves:
- Similar chemical compounds or therapeutics: China's patent database (CNIPA) contains numerous filings in pharmaceutical chemistry, especially in oncology, neurology, and metabolic diseases.
- Design around options: Competitors may develop structurally similar compounds outside the scope of CN103833634’s claims to circumvent exclusivity.
- Existing patents: Overlap exists with newer filings and previously granted patents, which can erode the scope of protection, especially if related patents are broad or have broader priority dates.
Patent Family and Global Patent Strategy
It’s common for the applicant to file corresponding patents internationally (e.g., in WIPO, US, EPO) to extend protection globally. Analysis should consider:
- whether CN103833634 is part of a patent family,
- the scope of claims in international counterparts, and
- potential for patent term extensions or supplementary protection certificates (SPCs).
Legal and Regulatory Environment
China’s patent regulations emphasize novelty, inventive step, and industrial applicability. The patent must have innovation over prior art, which is evaluated at the time of filing and during prosecution.
Recent Chinese patent legal reforms have increased examiners’ emphasis on artificial intelligence and chemical structure specificity, impacting pharmaceutical patents’ grantability.
Strategic Implications
- Overlap with other patents: Companies developing similar compounds must conduct detailed freedom-to-operate analyses; overlapping claims could lead to infringement or invalidation challenges.
- Scope for licensing: The patent’s specific claims allow licensing or collaboration opportunities, especially if the protection is narrow.
- Design-around opportunities: Competitors can modify chemical structures or formulations to avoid infringement, emphasizing the importance of analyzing the claim language.
- Global patent strategy: Since China is a significant pharmaceutical market, protecting inventions with Chinese patents complements broader international patent protections.
Conclusion
The CN103833634 patent exemplifies a typical pharmaceutical invention claiming novel compounds, synthesis methods, or therapeutic uses within China. Its scope, carefully defined through hierarchical claims, aims to secure exclusivity in a competitive chemical and pharmaceutical landscape.
Understanding precisely how its claims interact with prior art and the overall patent ecosystem is critical for strategic positioning. Companies should focus on:
- Monitoring patent scope evolution, especially through subsequent filings,
- Conducting freedom-to-operate and invalidity analyses, and
- Aligning patent filings with global strategies for maximal protection.
Key Takeaways
- Scope & Claims: CN103833634’s protection hinges on specific chemical structures, synthesis methods, and therapeutic applications, with the scope at risk from structurally similar derivatives.
- Patent Landscape: Numerous filings in China's pharmaceutical patent space necessitate diligent landscape mapping to avoid infringement and identify licensing opportunities.
- Strategic Focus: Broad claims offer higher protection but face higher invalidity risk; narrow claims require vigilant competitive monitoring.
- Legal Environment: China's evolving patent regulations emphasize inventive step and structural specificity, influencing patent grantability.
- Global Strategy: Chinese patents should be part of a comprehensive international portfolio, especially for drugs with global commercial potential.
5 Unique FAQs
Q1: How does the scope of CN103833634 compare with similar patents in China?
A: CN103833634 likely has a scope centered around specific chemical structures and therapeutic uses. Similar patents may vary in breadth, with some broader claims covering entire classes of compounds, and others narrow to particular derivatives, affecting competitive leverage.
Q2: Can competitors modify the chemical structure to bypass this patent?
A: Yes. If the claims are narrowly drafted, competitors could develop structurally similar compounds outside the scope, provided they avoid infringement through structural modifications.
Q3: What is the significance of the patent landscape for this patent's commercialization?
A: The patent landscape reveals overlapping patents, potential freedom-to-operate issues, and licensing opportunities, guiding commercialization strategies and R&D focus.
Q4: How might recent Chinese patent law reforms impact pharmaceutical patent claims?
A: Reforms emphasize stricter examination on novelty and inventive step, making it essential for patent applications to present clear, inventive structural features and therapeutic data to secure approval.
Q5: Should patent protection in China be complemented by international filings?
A: Absolutely. The Chinese market's strategic importance warrants international patent filings, especially in jurisdictions like the US and Europe, to maximize global protection and licensing potential.
Sources:
- China National Intellectual Property Administration (CNIPA). Patent CN103833634.
- WIPO PATENTSCOPE database.
- Chinese Patent Law and Regulations amendments (latest 2022 updates).
- Pharmaceutical patent landscape reports for China [market reports].
- Industry case studies and legal analyses relevant to Chinese pharmaceutical patents.
