It does not affect the passed part and is divided by default.

Partial rejection means that part of it can pass the preliminary examination stage. The trademark registration application split application issued at the same time is for the subject's agent to submit it to the Trademark Office to speed up the preliminary examination of the client's trademark. . If the applicant cannot receive the document, the Trademark Office will make a preliminary review announcement on some of the approved products after the time for the reexamination application for the rejected part has elapsed. So according to what the questioner said, there is no need to do anything to wait for the preliminary review announcement.