You need to reinstall the Trademark Office soft certificate driver. And the steps to re-download the soft certificate are: click on the operating system, start, all programs, find the "Industrial and Commercial Soft Certificate Client Driver" item, click and select Uninstall the industrial and commercial software certificate client driver and then restart the computer, otherwise the following steps will be invalid. Then, go to the trademark registration user application page of the Trademark Office -->, click on the digital certificate driver download in the China Trademark Network online service system, and select to download the soft certificate driver. After installation, reboot. Then log in to the China Trademark Network online service system and click on soft certificate reissue. After the reissue is successful, log in to your email and download the soft certificate again. Before logging in with the soft certificate, you need to modify the pin code once, and then you can log in. Please note that IE or browser must use compatibility mode when using it.