Payment website: (China Patent Electronic Application Network). Steps: Step 1, log in (China Patent Electronic Application Network). Step 2: Enter the user name, user password and verification code in the column of user name, user password and verification code in the upper left corner. If you don't have a user name, click "Register" to apply. Step 3: After entering the user name, password and verification code, click "Login Foreign Service" to enter the operation interface. Step 4: Click "Online Payment" in the upper right corner to open the following interface. Click "Pay by country application number" to open the following interface. Step 5, enter the patent number to be paid and the name of the payer in the patent number column. If the patent number is 20 172 12207793, enter 20 172 12207793 and fill in the name of the payer. After completing the form, click Query. Step 6: After completing the form, click Query. The annual fee for patents will be listed. Step 7: Check the number of years to be paid (up to two years), and then click "Confirm". The system switches to the payer information interface, and fills it in carefully according to the prompt. This is the information used to mail the bill. Step 8: After completing the form, click "Generate Order". Step 9, the system switches to the bank payment page.