1. Online inquiry: the payer can log on to the website of China National Intellectual Property Administration government, click "Patent Search Inquiry", and enter "Patent Examination Information Inquiry in China and Many Countries or Patent Affairs Information Inquiry in China" to inquire about the fees payable and paid fees. Website:.
Usage: public inquiry → agree with the above statement → continue → enter the application number/patent number, enter the verification code, and inquire → expense information.
2. Telephone inquiry: the payer can inquire personal payment information by telephone.