Normal procedure, after obtaining the notice of acceptance of the patent, pay the application fee and the actual examination fee. There is no need to wait until the preliminary examination is approved before paying the actual examination fee, and the time for substantive examination can be greatly shortened by paying the fee in advance. The actual examination review is about 18 months, there will be one or two corrections to the notice of opinion issued, the smooth situation of 20 months to complete the actual examination, the remaining month and a half will be publicized.