Circumstances in which the party concerned may request a refund
(1) Situation of overpayment: If the party concerned should pay an annual fee of 600 yuan,
within the specified period The actual fee paid within the period is 650 yuan, and you can request a refund for the overpaid 50 yuan.
(2) Re-payment of fees: If a request for change of bibliographic items is made once, the fee for changing the bibliographic items shall be
paid 200 yuan. After the party concerned pays 200 yuan, the request may be made again
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After paying 200 yuan, the party concerned can request a refund for the 200 yuan paid again.
(3) Wrong payment of fees: For example, the party writes the wrong fee type and application number (or patent number) when paying; or due to insufficient payment or late payment. If the rights are lost, or if the patent fees are paid after the rights are lost, the party concerned may request a refund.