Maryland Business Occupations and Professions Section 6.5-313
§ 6.5-313.
  (a)   The Board shall reinstate the license of an individual who, for any reason, has failed to renew the license, if the individual:
    (1)   applies to the Board for reinstatement within 2 years after the license expires;
    (2)   meets the renewal requirements of § 6.5-312 of this subtitle and pays to the Board all past due renewal fees; and
    (3)   except as otherwise provided in subsection (c) of this section, pays to the Board a reinstatement fee of $100, in addition to all past due renewal fees.
  (b)   (1)   If an individual has failed to renew a license for any reason and then applies to the Board for reinstatement more than 2 years after the license has expired, the Board may:
      (i)   require the individual to reapply for a license in the same manner as an applicant applies for an original license under this subtitle; or
      (ii)   subject to paragraph (2) of this subsection, reinstate the license.
    (2)   The Board may reinstate a license under paragraph (1)(ii) of this subsection only if the individual:
      (i)   meets the renewal requirements of § 6.5-312 of this subtitle and pays to the Board all past due renewal fees;
      (ii)   if required by the Board, states reasons why reinstatement should be granted; and
      (iii)   except as otherwise provided in subsection (c) of this section, pays to the Board a reinstatement fee of $100, in addition to all past due renewal fees.
  (c)   The Board may waive a reinstatement fee for a licensee who provides evidence satisfactory to the Board that the licensee did not provide stationary engineer services during the time the license lapsed.