1. Log in to "China National Intellectual Property Administration" and click "Patent Announcement Inquiry".
2. Click "Patent Search" to pop up a query link, enter it, or click "Patent Announcement Query".
3. Click on "Patent Search" and "Conventional Search" and enter the company name or patent number, etc.
4. You can also "advanced search". Regular search is simpler, and advanced search inputs more data. Patent right refers to the exclusive right granted by the state to the inventor or designer within a certain period of time in accordance with legal procedures on the premise that the content of the invention is open to the public and the invention has legal interests to the society.