R.I. Gen. Laws § 9-18-2: Notice to adverse party.

Previous to the taking of any deposition within this state, the official authorized to take the deposition shall, in all cases, cause the adverse party or his or her attorney of record to be notified in writing of the time and place appointed for taking the depositions, so that he or she may attend and put interrogatories to the deponent if he or she think fit; provided, that if the person to be notified cannot be found and his or her residence is not known and he or she has no attorney of record, the moving party or his or her attorney may make affidavit of such facts before any justice of the superior court at any time, and thereupon the justice shall prescribe the method in which notice shall be given to the person.