How to write the patent refund application?

The previous application should be paper, right? Download an opinion statement about charging from State Taxation Administration of The People's Republic of China website, fill in the form according to the instructions, and then attach a receipt or a copy of the charging certificate as an attachment and send it to the acceptance office in State Taxation Administration of The People's Republic of China. The person who pays attention to the signature should be the person (unit) who pays the fee.