Rule 3.201 - Applicability of Rules(A) Subchapter 3.200 applies to(1) actions for divorce, separate maintenance, the annulment of marriage, the affirmation of marriage, paternity, support under MCL 552.451et seq. or MCL 722.1et seq., the custody of minors or parenting time under MCL 722.21et seq. or MCL 722.1101et seq.,(2) an expedited proceeding to determine paternity or child support under MCL 722.1491et seq., or to register a foreign judgment or order under MCL 552.2101et seq. or MCL 722.1101et seq., and to(3) proceedings that are ancillary or subsequent to the actions listed in subrules (A)(1) and (A)(2) and that relate to(a) the custody of minors,(b) parenting time with minors, or(c) the support of minors and spouses or former spouses.(B) As used in this subchapter with regard to child support, the terms "minor" or "child" may include children who have reached the age of majority, in the circumstances where the legislature has so provided.(C) Except as otherwise provided in this subchapter, practice and procedure in domestic relations actions is governed by other applicable provisions of the Michigan Court Rules, except the number of interrogatories set forth in MCR 2.309(A)(2) shall be thirty-five.(D) When used in this subchapter, unless the context otherwise indicates: (1) "Case" means an action commenced in the family division of the circuit court by filing one of the following case initiating documents:(a) an original complaint;(b) transfer of an action from another court or tribunal;(c) a foreign judgment or order;(d) a petition under MCR 3.222(C);(e) a consent judgment under MCR 3.223;(f) a complaint and notice under MCR 3.230; or(g) a request for entry of a consent agreement and a consent judgment or order under MCR 3.230.(2) "File" means the repository for collection of the pleadings and other documents and materials related to a case. A file may include more than one case involving a family.(3) "Jurisdiction" means the authority of the court to hear cases and make decisions and enter orders on cases.(4) "Case initiating document" includes a statement, letter, or other document filed in lieu of a complaint to open a case and request relief under the Summary Support and Paternity Act, MCL 722.1491et seq., or to register a foreign judgment or order under the Uniform Interstate Family Support Act, MCL 552.2101et seq. or the Uniform Child Custody Jurisdiction Enforcement Act, MCL 722.1101et seq.Amended September 20, 2018, effective 4/1/2019; amended June 19, 2019, effective 1/1/2020; amended September 18, 2019, effective 1/1/2020.