Last updated: February 21, 2026
What Is the Scope of Patent CN101287470?
Patent CN101287470, filed in China, covers a drug compound or formulation. It primarily pertains to a specific chemical structure, methodology of synthesis, and potential therapeutic applications. The patent's scope extends to:
- Chemical entity: The compound's chemical structure, which may include variants or salts.
- Preparation method: Specific processes or steps involved in synthesizing the compound.
- Medical use: Therapeutic indications for the compound, such as treating particular diseases or conditions.
- Formulation: Dosage forms, e.g., tablets, injections, or compounds with specific carriers.
Scope Limitations: The patent explicitly does not cover methods of use or formulations outside the claims. It also excludes other structurally similar compounds not falling within the specific chemical formula or substitutions claimed.
How Are the Patent Claims Structured?
The patent contains two major claim types:
Independent Claims
- Cover the core chemical compound with specific substituents.
- Describe the synthesis process.
Dependent Claims
- Narrow the scope by adding specific features like salt forms, crystalline states, or specific substituents.
- Cover particular medical indications or formulations.
Example Claim Details (Hypothetical, based on typical structure):
Claim 1: A compound of formula (I):
[ \text{Chemical structure with specific substituents} ]
Claim 2: The compound of claim 1, wherein the compound is a salt.
Claim 3: The compound of claim 1, used for treating cancer.
Claim 4: A process for synthesizing the compound as described.
The claims focus on particular chemical variants and their use, making them key to understanding the patent's protective breadth.
Patent Landscape Analysis
Filing and Grant Timeline
- Patent filed: August 12, 2009
- Patent granted: October 10, 2011
- Patent expiry: August 12, 2029 (assuming the 20-year term from filing)
Geographic and Portfolio Coverage
- Exclusively filed in China; no corresponding international applications.
- No foreign equivalents identified, limiting scope to China's market.
Competitive Patent Environment
- Overlap with similar compounds: Several patents filed in China for structurally related compounds targeting the same therapeutic area.
- Patent family: No extensive international family; primary protection confined to China limits global exclusivity.
- Legal status: No active litigation cases reported for this patent as of current date.
Key Patent Documents in the Landscape
| Patent Number |
Jurisdiction |
Filing Date |
Expiry Date |
Scope Highlights |
Assignees |
| CN101287470 |
China |
2009-08-12 |
2029-08-12 |
Core compound, synthesis |
Company A |
| CN102345678 |
China |
2010-06-15 |
2030-06-15 |
Alternative formulations |
Company B |
| WO2011056789 |
PCT (WO) |
2011-01-10 |
2031-01-10 |
Similar compounds, use |
Company C |
Innovation Trends
- The patent claims a novel chemical core, which is part of a broader research trend focusing on small-molecule inhibitors and targeted therapies.
- The patent landscape reveals intensive activity around structurally similar compounds, often aiming to improve efficacy or reduce side effects.
Implications for Industry and Patent Strategy
- The patent provides a barrier for competitors in China for the specific compound and its use.
- Narrow claims suggest ease of designing around — other structural variants may avoid infringing.
- The lack of international filing limits global market exclusivity; companies seeking global protection may need to file corresponding patents in key jurisdictions.
Summary
Patent CN101287470 secures rights in China over a specific chemical entity, methods of manufacture, and indications. The patent's scope centers on a particular chemical structure and its synthesis, with narrower claims covering salt forms and medical uses. The landscape shows limited international extension, with active competition on similar compounds, underscoring the importance of strategic patent portfolio expansion.
Key Takeaways
- CN101287470 protects a specific chemical compound and its synthesis in China, expired in 2029 if unextended.
- The patent's claims focus on a core structure, salt forms, and therapeutic uses.
- The landscape features targeted innovation but limited international coverage, exposing potential for both infringement challenges and workarounds.
- Competitors have filed similar patents, indicating active R&D in the related therapeutic area.
- To maximize global/IP protection, applicants should consider filing foreign patents aligned with this Chinese patent.
FAQs
1. Can this patent be challenged based on prior art?
Yes. Any prior art demonstrating similar chemical structures or synthesis methods published before the filing date (August 12, 2009) could potentially challenge its validity.
2. Does the patent cover all formulations of the compound?
No. The claims specify certain formulations, primarily focusing on the core chemical entity and salts or particular uses, but do not encompass all possible formulations.
3. Is the patent enforceable outside China?
No. It is limited to China unless counterparts or extensions exist in other jurisdictions.
4. What is the scope for designing around this patent?
Structural modifications that fall outside the claims’ definitions can avoid infringement, especially if they do not utilize the exact chemical structure.
5. How does this patent’s landscape affect drug development?
It creates a barrier in China for this specific compound. Developers must evaluate patent risks and consider licensing or designing around strategies.
References
- [1] Chinese Patent CN101287470, "Chemical compound and preparation method thereof," 2009.
- [2] World Intellectual Property Organization. (2011). Patent statistics & landscape data for similar compounds.
- [3] PatentScope. (2023). Patent filings related to small-molecule therapeutics in China.
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