If the annual fee payable by the party concerned is 6 yuan and the actual fee paid within the specified period is 65 yuan, a refund request can be made to 5 yuan.
2. Heavy payment
If a recording item change request is made, the recording item change handling fee 2 yuan should be paid. After paying 2 yuan, the party concerned pays 2 yuan again, and the party concerned can make a refund request for 2 yuan.
3. Wrong payment
For example, when the parties pay the fees, they write down the wrong type of fees and application number (or patent number); Or if the right is lost due to insufficient payment or overdue payment, or if the patent fee is paid after the right is lost, the party concerned may request a refund.