A respondent shall serve a response within twenty-one (21) days after the service of the summons upon the party, or within such longer period as is provided by statute. A party served with a pleading stating a cross-claim against him shall serve a response thereto within twenty-one (21) days after the service of the cross-claim upon the party. The petitioner shall serve a reply to a counterclaim in the response within twenty-one (21) days after service of the response or, if a reply is ordered by the court, within twenty-one (21) days after service of the order, unless the order otherwise directs. The service of a motion permitted under this rule alters these periods of time as follows, unless a different time is fixed by order of the court:
If a pleading sets forth a claim for relief to which the adverse party is not required to serve a responsive pleading, the adverse party may assert at the trial any defense in law or fact to that claim for relief. If, on a motion asserting the defense numbered (6) to dismiss for failure of the pleading to state a claim upon which relief can be granted, matters outside the pleading are presented to and not excluded by the court, the motion shall be treated as one for summary judgment and disposed of as provided in Rule 505, and all parties shall be given reasonable opportunity to present all material made pertinent to such a motion by Rule 505.
Id. Fam. Law. P. 502