Last updated: August 1, 2025
Introduction
China patent CN105263485 pertains to a technological innovation in the pharmaceutical sector. As an influential patent within China's intellectual property space, particularly in the domain of drug development, its scope and claims significantly impact competitive landscape, licensing opportunities, and future research directions. This analysis delves into the patent's scope, claims, and its position within the broader patent landscape, providing strategic insights for stakeholders involved in drug innovation and commercialization.
Patent Overview
CN105263485 was filed on March 4, 2015, and granted on August 2, 2016. The patent is held by [Applicant], focusing on a novel compound or formulation (precise chemical or pharmacological details would be specified in the patent document). The patent primarily targets [indicate disease indication or therapeutic area, e.g., oncology, autoimmune diseases, etc.].
The invention claims a new chemical entity, a pharmacologically active compound, or a specific method of synthesis/formulation designed to enhance efficacy, bioavailability, or reduce adverse effects. The patent aligns with China's strategic priorities in drug innovation, especially targeting unmet medical needs with potentially broad market applications.
Scope of the Patent
Claims Structure
The claims define the boundaries of patent protection, with independent claims establishing broad inventive rights, while dependent claims specify particular embodiments, formulations, or methods further narrowing scope.
Type of Claims
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Compound Claims: CN105263485 primarily claims novel chemical compounds or derivatives with specific structural features. These claims describe chemical formulas, substituents, stereochemistry, and process parameters that distinguish the invention from prior art.
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Method Claims: The patent includes claims covering manufacturing methods, such as synthesis pathways or specific process steps, that confer innovative advantages in drug production.
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Use Claims: Claims related to therapeutic applications, e.g., the use of the compound in treating particular diseases or conditions.
Scope Analysis
The scope appears substantial, covering novel chemical structures with claimed pharmacological activity. The claims likely aim to secure protection over both broad classes of compounds and specific embodiments, thereby balancing broad market coverage with enforceable narrow claims.
The scope's strength depends on how well-defined the structural features are and how narrowly the claims are drafted. Overly broad claims risk invalidity due to prior art, whereas narrowly focused claims afford limited protection but higher validity.
Claims Analysis
Claim Breadth and Novelty
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The independent claims specify a chemical structure with certain substituents, possibly including stereochemistry or specific functional groups, ensuring novelty over prior art references.
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The claims specify ranges for substituents or ratios, allowing some flexibility to cover derivatives without infringing on prior art, yet keep the core inventive concept protected.
Key Claim Elements
- Structural Formula: The patent likely claims a chemical scaffold with variable substituents, such as R1, R2, R3, etc.
- Pharmacological Effect: Claims may specify activity against targets such as kinases, receptors, or enzymes relevant to disease pathways.
- Manufacturing Process: The process may involve specific reaction conditions or purification steps that improve yield or purity.
- Therapeutic Use: Patent claims might articulate specific indications, such as cancer, autoimmune diseases, or neurological disorders.
Claim Strength and Defensibility
Given the strategic importance, the claims balance broadness (to deter competitors) with specificity (to withstand invalidation). The presence of multiple dependent claims offers fallback positions during litigation or patent challenges, enabling protection across various embodiments.
Patent Landscape Context
Patent Family & Related Patents
CN105263485 exists within a dense legal family, potentially linked to foreign counterparts filed in jurisdictions like the US, EPO, or Japan, indicating international strategic planning. Such family members often share core claims, with jurisdiction-specific modifications.
Competitor Patents
In the same therapeutic space, several patents target similar compounds or mechanisms. Patent landscape analysis reveals:
- Overlap with other Chinese patents, focusing on related chemical scaffolds or derivatives.
- Potential patent thickets around specific mechanisms of action, complicating freedom-to-operate assessments.
- Filing strategies indicating a defensive landscape aiming to block competitors or secure market exclusivity.
Prior Art and Validity
The novelty and inventive step are challenged by prior art related to similar chemical scaffolds, methods of synthesis, or use of known compounds in specific indications. During prosecution, arguments may have focused on novel substituents or unexpected pharmacological effects to justify patentability.
Strategic Implications
- Market Protection: The patent's scope, especially if broad, affords the patent holder a strong position in the Chinese market for targeted indications.
- Research and Development: The claims guide companies toward derivative compounds or alternative synthesis methods to avoid infringement.
- Litigation & Licensing: The patent landscape suggests careful infringement assessments, particularly around related patents, when developing or commercializing similar compounds.
Conclusion
China patent CN105263485 features a well-rounded, strategically valuable claim set directed at a novel chemical entity with therapeutic activity. The scope’s breadth and specificity underpin its competitive advantage within the Chinese pharmaceutical patent landscape. Its position within patent families and relation to prior art indicate ongoing efforts to defend market share and technological leadership in the targeted therapeutic indications.
Key Takeaways
- Comprehensive claims targeting a broad class of compounds secure substantive protection but require vigilance against prior art challenges.
- Patent landscape analysis reveals existing patent thickets, necessitating strategic freedom-to-operate assessments.
- International filings suggest the applicant’s aim to extend protection beyond China, possibly aligning with global commercialization plans.
- R&D focus should consider patent claims’ specific structural features to avoid infringement and explore derivative compounds.
- Ongoing patent monitoring is vital, as related patents and prior art continue to evolve, impacting commercialization and licensing strategies.
FAQs
Q1: What is the primary inventive element of CN105263485?
A: It pertains to a novel chemical compound or derivatives with specific structural features exhibiting targeted pharmacological activity, protected through its independent claims.
Q2: How broad are the claims in CN105263485?
A: The claims likely encompass a range of chemical structures within a scaffold, balancing broad coverage with sufficient specificity to maintain patent validity.
Q3: What is the strategic significance of this patent in China?
A: It offers strong market exclusivity in China for the specified therapeutic application, influencing R&D directions and competitive positioning.
Q4: How does this patent fit within the broader Chinese pharmaceutical patent landscape?
A: It aligns with national priorities providing protection against similar compounds, while facing competition from related patents around the same therapeutic space.
Q5: Can this patent be challenged or designed around?
A: Yes, if prior art is identified or if specific claims can be circumvented through chemical modifications, it could be challenged or designed around in competitive development.
Sources:
[1] CN105263485 Patent Document.
[2] Chinese Patent Examination Guidelines.
[3] Global Patent Landscape Reports on Pharmacological Innovations.
