Do you have an open number after receiving the notice of preliminary examination of the application for a patent for invention?

No, the receipt of the notice of preliminary examination of the application for a patent for invention can only show that the patent application has passed the preliminary stage. Usually, after the application passes the preliminary examination, it will enter the disclosure procedure of the invention patent, and the WeChat official account and patent text of the application will be disclosed in 2-3 months.

Patent publication number:

In the process of patent application, before obtaining the patent authorization, the patent number published by the State Patent Office indicates that the patent has been accepted.

Patent publication number, also known as patent contribution number, consists of "country number+classification number+serial number+identification number", such as CN 1340998A, which stands for China No.340998 invention patent.