How long will it take for a reply to change the status to a case-by-case trial?

a reply means a reply to the notice of the first review opinion. Invention patents have substantive examination (actual examination). During the actual examination, the examiner will point out the places or problems that do not meet the requirements in the application and issue a document asking the applicant to answer those questions. This article is called' notice of examination opinions'. This process usually takes 2~3 rounds. That is, the' first review notice' and the' second review notice'. . . . Usually, the reply/defense/opinion statement is called "Answer to the real trial", "Answer to the trial" or "Answer to OA (Office Action)". Different times can be called' one-pass defense' and' two-pass defense' respectively. . .