How to inquire about existing patents?

The following small series will introduce in detail how to inquire about existing patents. How to inquire about existing patents? 1. query method: patent query can generally be queried in the database published by China National Intellectual Property Administration. You can also entrust a patent search center to make professional inquiries. 2. Analysis of patent types to be inquired: In China, there are three types of patents: invention, utility model and appearance patent. Only when the type of patent is determined can it be inquired. 3. If there is a patent number/application number, you can directly enter it in the column of patent number/application number. Detailed steps of patent inquiry: 1, selecting appropriate patent database 2, contents contained in general patent database 3, search syntax involved in general patent database 4, basic steps in patent inquiry process (drafting keywords)