2. You can use the "transaction inquiry" function in the online payment system for inquiry. If the feedback result is that payment is successful, it can be determined that payment has been successful. If the feedback result is that the payment failed, you can call UnionPay's 24-hour customer service telephone number 955 16, provide the transaction number of UnionPay and the payment time of the order, and then make an inquiry. You can also call the customer service phone of the issuing bank to confirm whether the deduction is successful.
3. If the online payment system still shows "Payment Failure" the next day after the deduction, the payer can provide the proof of bank payment time to the toll office of the Patent Office, and the Patent Office will handle it according to relevant laws and regulations after verification.