Md. Code, Estates and Trusts § 13.5–402

If a conservator has not been appointed in this State and a petition for a protective order is not pending in this State, a conservator appointed in another state, after giving notice to the appointing court of an intent to register, may register the protective order in this State by filing as a foreign judgment in a court of this State, in any county in which property belonging to the protected person is located, certified copies of the order, and letters of office and of any bond.