1. Visit the official website of China Patent Office (cnipa.gov.cn).
2. Select "Payment Service" under "Services" on the website.
3. Select "Enter self-service payment" in the "Patent Payment" section at the bottom of the page to enter the payment system of China Patent Office.
4. Select fees such as "paying agency fee", "annual patent fee/late fee" and "patent application fee" in the system, and enter relevant information.
5. At the same time, enter the basic information of the holder (name, registered address, tax number, etc. ), the system will assign a unique "paying customer identification number".
The above is the query method of patent payment customer identification number, I hope it will help you.