The patent information retrieved from the official website of China National Intellectual Property Administration is not real-time information. For example, I changed the applicant's work address the year before last, but the original information is still displayed in official website. If you want to query real-time patent information, it is recommended to go to China Patent Query System. As for Runtong, the information retrieved by these patent retrieval agencies is from the State Knowledge Bureau, not necessarily the information retrieved by the State Knowledge Bureau in official website, and sometimes it is written more accurately. → _→ If these search agencies are inaccurate and inconvenient, how can they be used?
The information in the patent application documents is basically the same whether it is from the search agency or official website of the State Administration of Taxation. The difference is that after the patent application, the information will change. It is suggested to dial the service number in official website, State Administration Bureau, or access the patent inquiry system in China. Search agents can mainly search in batches and download in batches, which makes the search more convenient.