Log in to the official website of the State Intellectual Property Office and directly enter the patent number and verification code to query patent-related information. The official website may be unstable and can be refreshed several times. In addition, the patent number must be complete and accurate, and fuzzy queries are not supported. Querying may be cumbersome and not suitable for beginners. We recommend a one-click query tool, the Smart Bud patent search platform, which has 140 million global patent data, multi-dimensional visual analysis, and workspace collaboration, and has powerful patent search and analysis functions.