How to question denial of motion to dismiss

An order denying a motion to dismiss is interlocutory and neither terminates nor finally disposes of a case; it is interlocutory as it leaves something to be done by the court before the case is finally decided on the merits.The denial of a motion to dismiss generally cannot be questioned in a special civil action for certiorari, as this remedy is designed to correct only errors of jurisdiction and not errors of judgment.[1] Neither can a denial of a motion to dismiss be the subject of an appeal which is available only after a judgment or order on the merits has been rendered.[2] Only when the denial of the motion to dismiss is tainted with grave abuse of discretion can the grant of the extraordinary remedy of certiorari be justified.[13]