the fees you need to pay after the mitigation are:
(1) the application fee is 185 yuan
(2) the substantive examination fee is 375 yuan.
if a patent fails to pass the examination, it needs to pay the reexamination fee, 2 yuan, and if it is authorized, it doesn't need to pay the reexamination fee.
the annual fee of the current year will be paid only when it is authorized. If it is authorized within the third year, it will be paid to 15% of 9 yuan, that is, 135 yuan.
the annual fee is not fixed every year, and some fees will be increased every few years. Only the first three annual fees can be paid at 15%, and the full fee will be paid from the fourth annual fee.
In addition, if the invention is not authorized within three years, the maintenance fee will only be paid when the patent is authorized in the future. If it is authorized within three years in 6 yuan every year, the maintenance fee will not be required.
it is not necessary to pay all the expenses together. However, the application fee and examination fee must be paid first, otherwise all procedures cannot be started.