Certain motions must be brought before a responsive pleading is filed. In these cases a defendant may file a motion and wait for further court action before filing their answer.
If the court denies the motion or postpones disposition until trial, an answer is due within fourteen (14) days after notice of the court’s action. If the court grants a motion for a more definite statement, the responsive pleading must be served within fourteen (14) days after the more definite statement is served. Fed. R. Civ. P. 12(a)(4).