If you forget the user name of the trademark certificate, you can retrieve it according to the following steps:

1. Log in to the trademark network official website and click on the online trademark query.

2. Click "Forgot User Name" in the login interface of trademark network soft certificate.

3. Enter the registered mobile phone number and verification code according to the prompt, and the system will send the user name to the mobile phone.

if you encounter problems in operation, you can consult a professional.