Md. Code Ann., Corps. & Ass'ns § 7-301
(2) Either:
If a foreign corporation is doing or has done any intrastate, interstate, or foreign business in this State without complying with the requirements of Subtitle 2 of this title, neither the corporation nor any person claiming under it may maintain a suit in any court of this State unless it shows to the satisfaction of the court that:
Added by Acts 1975, c. 311, § 2, eff. July 1, 1975.
Formerly Art. 23, § 91.