Is the examination and reexamination of invention patents still conducted by the original examiner?

There is a review procedure for review, which shall be conducted by the reviewer. Different from the examiner, there is a pre-trial opinion before this, which is given by the original examiner for the examiner's reference. When the reexamination makes a decision to withdraw and reject the case, the case will be returned to the original examiner for the actual trial again, and the actual trial procedure will continue, and no conclusion contrary to the conclusion of the reexamination shall be made.