The digital certificate is accidentally lost due to computer system reinstallation or other reasons. How to obtain the digital certificate again?
Log in to the patent electronic application website, click on the relevant information column to download the "Opinion Statement on Electronic Application User Registration Matters", fill in the form as required, and mail the paper form and relevant supporting documents to the Patent Office acceptance office. After the materials are reviewed and qualified, relevant personnel will handle the certificate re-issuance procedures for the user. Users are requested to back up the certificate in time after downloading it to avoid affecting the use of the system due to the loss of the digital certificate.
Source: State Intellectual Property Office's electronic application column "Electronic Application Frequently Asked Questions (2)"