When a responding party serves both objections and answers to interrogatories, the 45-day deadline for filing a motion to compel (even if directed only against the objections) does not begin to run until the responding party serves a verification of the answers.  However, service of only a notice of motion to compel before the deadline is insufficient.  To be timely, the notice must be accompanied by a memorandum or other document that notifies the opposing party of which interrogatories are the subject of the motion and why the response is deemed inadequate.