A party may serve on any other party no more than 25 written interrogatories, including all discrete subparts. Interrogatories are one form of discovery in a lawsuit.An interrogatory is a written question from one party to the lawsuit to another party to the lawsuit. Generally, interrogatories are objectionable if they seek information not within the scope of discovery defined in Maryland Rule 402 or Federal Rule 26(b). 03_2018 Montgomery Civil. The new Local Rules of Practice of the Montgomery County Common Pleas Court, General. You cannot send more than 30 questions to another party in a circuit court case. The Maryland Rules have form interrogatories that you can use as an example. Rule 803(6) of the Federal Rules of Evidence. -5-. All forms are ADA accessible, and you can handwrite or type into the PDF form to fill it out.