Annual fee standard of invention patent

According to the inquiry of legal charts, the patentee has to pay a certain annual fee every year after applying for the patent right, whether it is invention, utility model or design. However, the amount of patent fees for different types of patents is different each year. 900 yuan 1-3 (every year); 4-6 years (every year) 1200 yuan; 7-9 years (full year) 2000 yuan; 4000 yuan in the first year (10-12); 13- 15 (year) 6000 yuan; 16-20 years (annual) 8000 yuan. According to relevant laws and regulations, the longest protection period of an invention patent is 20 years, during which the patentee is required to pay an annual fee, and the annual patent fee may be different.