R.I. Gen. Laws § 33-15.2-401: Registration of guardianship orders.

If a guardian has been appointed in another state and a petition for the appointment of a guardian is not pending in this state, a guardian appointed in another state, after giving notice to the appointing court of an intent to register, may register the guardianship order in this state by filing as a foreign judgment in a court of this state in any appropriate city or town of this state certified copies of the order and letters of office.