How do I know whether a patent is an electronic application or a paper application?

The electronic application will provide a matching certificate for the customer to log in. You can register on the electronic patent website with your ID number. If the agent uses electronic registration, it will prompt you that your ID card has been registered. Do not register again. In addition, if it is an electronic application, some middleware has no paper palindrome. In addition, if you have got the application number, you can call the patent office directly.