Maryland Financial Institutions Section 1-304

      (a)      In this section, "subpoena" means a subpoena, summons, warrant, or court order that appears on its face to have been issued on lawful authority.

      (b)      A fiduciary institution may disclose or produce financial records or information derived from financial records in compliance with a subpoena served on the fiduciary institution, if:

            (1)      The subpoena contains a certification that a copy of the subpoena has been served on the person whose records are sought by the party seeking the disclosure or production of the records; or

            (2)      Contains a certification that service has been waived by the court for good cause.