When does the patentee start to pay the patent fee, and under what circumstances can he ask for a refund of the annual fee?

The patentee shall pay a certain fee every year from the year when the patent is granted to the end of the patent protection period. (1) The applicant shall pay the patent registration fee, announcement printing fee, stamp duty and the annual fee for the year when the patent right is granted. Where an application for a patent for invention needs to pay the application maintenance fee, the applicant shall pay the application maintenance fee for each year together. Failure to pay or pay the full fee at the expiration of the period shall be deemed as failure to go through the registration formalities. The annual fee for the year when the patent right is granted shall be paid within the time limit specified in the notice of granting the patent right issued by the Patent Office, and the annual fee thereafter shall be paid in advance within one month before the expiration of the previous year. (2) Need to pay the application maintenance fee. Where an application for a patent for invention has not been granted a patent right for two years from the date of filing, the applicant shall pay the application maintenance fee from the third year. Anyone who becomes a patentee must pay the patent fee every year to protect his patent, which is the obligation of the patentee. From the year when the patent is granted to the expiration of the patent protection period, the patentee has to pay a certain fee every year, and correctly paying the annual patent fee is the premise of maintaining the validity of the patent right! After the patent application is authorized, the patent applicant shall pay the annual fee of the year when the patent right is granted in addition to the patent registration fee when going through the registration formalities. The annual fee for subsequent years shall be paid in advance within one month before the expiration of the previous year. If it fails to pay within the specified time or the amount paid is insufficient, it can be paid within 6 months from the date of expiration of the annual fee, and at the same time pay the corresponding amount of late fees, otherwise the patent right will be lost! The specific calculation method for paying the late payment fee is as follows: If (1) exceeds 1 day to 1 month (including 1 whole month), only the annual fee is required, and no late payment fee is required; (2) If it exceeds 1 month to 2 months (including 2 whole months), the amount of overdue fine payable shall be 5% of the annual fee; (3) If the overdue payment is more than 2 months to 3 months (including 3 whole months), the amount of overdue payment shall be10% of the annual fee; (4) If the overdue payment is more than 3 months to 4 months (including 4 whole months), the amount of overdue payment shall be 65438+ 05% of the annual fee; (5) If the overdue period is more than 4 months to 5 months (including 5 whole months), the amount of overdue payment shall be 20% of the annual expenses; (6) If the overdue period is more than 5 months to 6 months (including 6 whole months), the amount of overdue payment shall be 25% of the annual expenses. Attention should also be paid when paying the annual patent fee: (1) Pay the annual patent fee in person: When paying the annual patent fee, the payer should make clear the patent number and the annual fee amount, fill in the payment list carefully, and verify the fee receipt in person after paying. (2) Pay the annual patent fee by post: When paying the fee to the agency by post office remittance, you must fill in the necessary payment information in the message and indicate the patent number at the end of the remittance slip. (3) Bank remittance: When paying fees to the agency through bank remittance, you should fax the copy of the bank remittance voucher, patent number, fee type, contact person's name, telephone number and address to the patent agency after remittance.