Within 10 days after filing notice of intention to move for a new trial in a civil case, the moving party must serve and file a memorandum in support of the motion, and within 10 days thereafter any adverse party may serve and file a memorandum in reply.
If the moving party fails to serve and file a memorandum within the time prescribed in (a), the court may deny the motion for a new trial without a hearing on the merits.
Cal. R. Ct. 3.1600