US lawMaineCourt rulesMaine Rules of Probate Procedure21Me. R. Prob. P. 21Rule 21. MISJOINDER AND NONJOINDER OF PARTIESLength: 18 wordsOfficial source Rule 21 of the Maine Rules of Civil Procedure governs procedure in all proceedings in the Probate Courts.PreviousMe. R. Prob. P. 20NextMe. R. Prob. P. 22