How much are the annual fees?

The patentee shall pay an annual fee beginning from the year in which the patent right was granted.

Annual fees 1st to 3rd of patent for invention US$ 109.00
Annual fees 4st to 6rd of patent for invention US$ 145.00
Annual fees 7st to 9rd of patent for invention US$ 242.00
Annual fees 10st to 12rd of patent for invention US$ 484.00
Annual fees 13st to 15rd of patent for invention US$ 726.00
Annual fees 16st to 20rd of patent for invention US$ 969.00