Me. R. Crim. P. 33
The court on motion of the defendant may grant a new trial to the defendant if required in the interest of justice. If the trial was by the court without a jury the court on motion of a defendant for a new trial may vacate the judgment if entered, take additional testimony, and direct entry of a new judgment.
A motion for a new trial based on any ground other than newly discovered evidence shall be made within 14 days after verdict or finding of guilty or within such further time as the court may fix during the 14-day period. Any motion for a new trial based on the ground of newly discovered evidence may be made only before, or within 2 years after, entry of the judgment in the Unified Criminal Docket.
If an appeal is pending, the clerk of the Unified Criminal Docket shall immediately send notice to the clerk of the Law Court of the filing of such a motion; the court shall conduct a hearing and either deny the motion or certify to the Law Court that it would grant the motion, but the court may grant the motion only on remand of the case.
Me. R. Uni. Crim. P. 33