How to inquire about PCT international application?

International retrieval is a closed process, except for single or obviously wrong questions, applicants and retrieval units should not communicate. However, information is obtained through the following two stages:

1, 9 months from the priority date, or 3 months after the retrieval unit receives the retrieval book, whichever is later, the retrieval unit will prepare the retrieval report or announce that it will not prepare the retrieval report in some cases, and the retrieval report or announcement will be transmitted to the International Bureau and the applicant.

2. After 18 months from the international application date (or priority date), the International Bureau will publish the PCT international patent application and the search report made by the international search unit, and send the application together with the search report to the patent office of the designated country required by the PCT patent application.