ULTRA VIRES
(a) Except as provided in subsection (b), the validity of corporate action may not be challenged on the ground that the corporation lacks or lacked power to act.
(b) A corporation's power to act may be challenged:
(1) in a proceeding by a shareholder against the corporation to enjoin the act;
(2) in a proceeding by the corporation, directly, derivatively, or through a receiver, trustee, or other legal representative, against an incumbent or former director, officer, employee, or agent of the corporation; or
(3) in a proceeding by the attorney general under section 14.30.