When you go to www.cponline.gov.cn, you can download agreements, application forms and other account opening documents, fill them out with your certificate without logging in, and then send them to the State Patent Office to open an account. They will give you a login user code and the corresponding key file. You go back to your computer and install a patent document generation system, just like an office. After you write a patent application file with it, you upload it to the patent office together with the user code and key file through special software. The upload date is the application date. In the future, all communications with the patent office will be transmitted through this software, and no paper will be accepted.
The advantage is paperless office, no running errands and no mailing. The disadvantage is that the current traffic is small, so the server is only available on weekdays and working hours; The use of patented software needs to be studied hard, otherwise it is very troublesome to use; If the patent is to be transferred, the transferee must also use an electronic account.