For those who apply directly to the outside world, the notice of passing the confidentiality review can be said to be relatively long among these methods. Because it is a paper submission, in general, notice will be received 1 month after submission; According to the provisions of 6. 1.2 of the Patent Examination Guide, if you do not receive the notice of applying for patent confidentiality examination in a foreign country within four or six months at the latest after submitting the request for confidentiality examination, you can apply for a patent for this technical scheme in a foreign country.
For those who directly submit international applications to the China Patent Office, they can generally enter the specific national stage after receiving the acceptance notice (PCT/RO 105 form).