What is the annual patent maintenance fee?

The annual fee for patent maintenance of invention patents is 1 ~ 3 years in 900 yuan, 4 ~ 6 years 1200 yuan, 7 ~ 9 years 2000 yuan,10 ~/2 years and 13 years 4000 yuan. The utility model and design were in 600 yuan in 1 ~ 3, 900 yuan in 4 ~ 5, 1200 yuan in 6 ~ 8, and 2000 yuan in 9 ~ 10. Then, after knowing the annual patent fee, get back to the topic; Does forgetting to pay the annual patent fee mean giving up the patent? Is there a solution? The answer is yes, but it needs to be paid within the specified time. The annual fee shall be paid in advance within one month before the expiration of the previous year. If it is not paid within the specified time or the amount paid is insufficient, it can be paid within 6 months from the date of the expiration of the annual fee, and the corresponding amount of late payment fee will be paid at the same time, otherwise the patent right will be lost!