1, China National Intellectual Property Administration website: You can find the data of domestic enterprises' patent application volume, authorized volume, authorized growth rate and so on.
2. Global patent database: such as WIPO (World Intellectual Property Organization) patent database, Espacenet (European Patent Office), etc. , you can query the global patent data.
3. Patent analysis tools: such as De Winter Innovation, PatSnap, InnovationQ, etc. , which can provide patent analysis and visualization tools to facilitate data analysis and comparison.
4. Patent research institutions: such as IFI claims, Clarivate analysis, etc. , providing patent data analysis and research services.