1. Query methods and patent queries can be carried out in the public database of the State Intellectual Property Office; you can also entrust the patent search center to carry out professional queries.
2. Analyze the type of patent to be queried. In China, patent types are divided into three types: invention, utility model, and appearance patent. Only after determining the approximate type of patent to be queried can the query be carried out.
3. If there is a patent number/application number: you can directly enter it in the patent number/application number column.