490.1502  Consequences of transacting business without authority.
  1.  A foreign corporation transacting business in this state without a certificate of authority shall not maintain a proceeding in any court in this state until it obtains a certificate of authority.
  2.  The successor to a foreign corporation that transacted business in this state without a certificate of authority and the assignee of a cause of action arising out of that business shall not maintain a proceeding based on that cause of action in any court in this state until the foreign corporation or its successor obtains a certificate of authority.
  3.  A court may stay a proceeding commenced by a foreign corporation, its successor, or assignee until it determines whether the foreign corporation or its successor requires a certificate of authority. If it so determines, the court may further stay the proceeding until the foreign corporation or its successor obtains the certificate.
  4.  A foreign corporation is liable for a civil penalty of not to exceed a total of one thousand dollars if it transacts business in this state without a certificate of authority. The attorney general may collect all penalties due under this subsection.
  5.  Notwithstanding subsections 1 and 2, the failure of a foreign corporation to obtain a certificate of authority does not impair the validity of its corporate acts or prevent it from defending any proceeding in this state.
89 Acts, ch 288, §162