Minn. R. Crim. P. 14.03
Comment-Rule 14
Notice of a defense or defenses under Rule 9.02, subd. 1(5) does not obviate the necessity for a plea under Rule 14.
Rule 20.02, subds. 6(2) and 7, governing the procedure upon the defense of mental illness or mental deficiency, contemplate that a defendant shall plead both not guilty and not guilty by reason of mental illness or deficiency when intending to put in issue both guilt on the elements of the offense charged and mental responsibility by reason of mental illness or deficiency.
A conditional plea of guilty may not be entered when the defendant reserves the right to appeal the denial of a motion to suppress evidence or any other pretrial order. State v. Lothenbach, 296 N.W.2d 854 (Minn. 1980). However, the parties may agree to stipulate to the prosecution's case to obtain review of a pretrial ruling under Rule 26.01, subd. 4. A guilty plea also waives any appellate challenge to an order certifying the defendant as an adult. Waynewood v. State, 552 N.W.2d 718 (Minn. 1996).
In misdemeanor and gross misdemeanor cases, by Rule 14.02, subd. 2, before accepting such a plea through counsel, the court should determine whether counsel has advised the defendant of the rights and information contained in Rule 15.02. See also Rule 26.03, subd. 1(3) (defendant's presence at trial and sentencing) and Rule 27.03, subd. 2 (defendant's presence at sentencing).