Mass. R. Crim. P. 13

As amended through February 29, 2024
Rule 13 - Pretrial Motions

(Applicable to cases initiated on or after September 7, 2004)

(a) In General.
(1) Requirement of Writing and Signature; Waiver. A pretrial motion shall be in writing and signed by the party making the motion or the attorney for that party. Pretrial motions shall be filed within the time allowed by subdivision (d) of this rule.
(2) Grounds and Affidavit. A pretrial motion shall state the grounds on which it is based and shall include in separately numbered paragraphs all reasons, defenses, or objections then available, which shall be set forth with particularity. If there are multiple charges, a motion filed pursuant to this rule shall specify the particular charge to which it applies. Grounds not stated which reasonably could have been known at the time a motion is filed shall be deemed to have been waived, but a judge for cause shown may grant relief from such waiver. In addition, an affidavit detailing all facts relied upon in support of the motion and signed by a person with personal knowledge of the factual basis of the motion shall be attached.
(3) Service and Notice. A copy of any pretrial motion and supporting affidavits shall be served on all parties or their attorneys pursuant to Rule 32 at the time the originals are filed. Opposing affidavits shall be served not later than one day before the hearing. For cause shown the requirements of this subdivision (3) may be waived by the court.
(4) Memoranda of Law. The judge or special magistrate may require the filing of a memorandum of law, in such form and within such time as he or she may direct, as a condition precedent to a hearing on a motion or interlocutory matter. No motion to suppress evidence, other than evidence seized during a warrantless search, and no motion to dismiss may be filed unless accompanied by a memorandum of law, except when otherwise ordered by the judge or special magistrate.
(5) Renewal. Upon a showing that substantial justice requires, the judge or special magistrate may permit a pretrial motion which has been heard and denied to be renewed.
(b) Bill of Particulars.
(1) Motion. Within the time provided for the filing of pretrial motions by this rule or within such other time as the judge may allow, a defendant may request or the court upon its own motion may order that the prosecution file a statement of such particulars as may be necessary to give both the defendant and the court reasonable notice of the crime charged, including time, place, manner, or means.
(2) Amendment. If at trial there exists a material variance between the evidence and bill of particulars, the judge may order the bill of particulars amended or may grant such other relief as justice requires.
(c) Motion to Dismiss or to Grant Appropriate Relief.
(1) All defenses available to a defendant by plea, other than not guilty, shall only be raised by a motion to dismiss or by a motion to grant appropriate relief.
(2) A defense or objection which is capable of determination without trial of the general issue shall be raised before trial by motion.
(d) Filing. Only pretrial motions the subject matter of which could not be agreed upon at the pretrial conference shall be filed with the court.
(1) Discovery Motions. Any discovery motions shall be filed prior to the conclusion of the pretrial hearing, or thereafter for good cause shown. A discovery motion filed after the conclusion of the pretrial hearing shall be heard and considered only if (A) the discovery sought could not reasonably have been requested or obtained prior to the conclusion of the pretrial hearing, (B) the discovery is sought by the Commonwealth, and the Commonwealth could not reasonably provide all discovery due to the defense prior to the conclusion of the pretrial hearing, or (C) other good cause exists to warrant consideration of the motion.
(2) Non-discovery Pretrial Motions. A pretrial motion which does not seek discovery shall be filed before the assignment of a trial date pursuant to Rule 11(b) or (c) or within 21 days thereafter, unless the court permits later filing for good cause shown.
(e) Hearing on Motions. The parties shall have a right to a hearing on a pretrial motion. The opposing party shall be afforded an adequate opportunity to prepare and submit a memorandum of law prior to the hearing.
(1) Discovery Motions. All pending discovery motions shall be heard and decided prior to the defendant's election of a jury or jury-waived trial. Any discovery matters pending at the time of the pretrial hearing or the compliance hearing shall be heard at that hearing. Discovery motions filed pursuant to subdivision (d)(1) after the defendant's election shall be heard and decided expeditiously.
(2) Non-Discovery Pretrial Motions. A non-discovery motion filed prior to the pretrial hearing may be heard at the pretrial hearing, at a hearing scheduled to address the motion, or at the trial session. A non-discovery motion filed at or after the pretrial hearing shall be heard at the next scheduled court date unless otherwise ordered.
(3) Within seven days after the filing of a motion, or if the motion is transmitted to the trial session within seven days after the transmittal, the clerk or the judge shall assign a date for hearing the motion, but the judge or special magistrate for cause shown may entertain such motion at any time before trial. If the parties have agreed to a mutually convenient time for the hearing of a pretrial motion, and the moving party so notifies the clerk in writing at the time of the filing of the motion, the clerk shall mark up the motion for hearing at that time subject to the approval of the court. The clerk shall notify the parties of the time set for hearing the motion.

Mass. R. Crim. P. 13