Maryland Corporations and Associations Section 7-203
§ 7-203.
  (a)   Before doing any intrastate business in this State, a foreign corporation shall qualify with the Department.
  (b)   To qualify, the corporation shall certify to the Department:
    (1)   The address of the corporation; and
    (2)   The name and address of its resident agent in this State.
  (c)   Unless terminated by the corporation, the qualification is effective as long as:
    (1)   The corporation has a resident agent in this State;
    (2)   The corporation does not forfeit its right to do intrastate business under the laws of this State; and
    (3)   If the corporation qualifies or changes its name after June 1, 1951, the name of the corporation complies with the requirements of Title 1, Subtitle 5 of this article.