China Patent Electronic Application Network, when logging in with a certificate, will prompt that an error occurred during the signature process! Error code 0×00000000 (NaN) Error description:!

I called the Patent Office and asked specifically. This situation is basically caused by an error in the control. The suggestion is to re-download and install the control. Be sure to use IE to download the control, and turn off the firewall and anti-virus software before downloading.

The correct posture for logging into the China Patent Electronic Application Network

Logging into the China Patent Electronic Application Network is not a simple matter. It's a small thing, but many people online said they were defeated.

-Supports IE8.0 and below

Open the compatibility view, otherwise nothing will happen if you click on login

-The window after login It's a pop-up window

You must allow pop-up windows, otherwise the progress will keep spinning, and it will return to its original state after the transfer. Is there anything