Antitrust laws in Wyoming are set forth under Title 40 (Trade and Commerce), Chapter 40-4-101 et seq.  Pursuant to Section 40-4-114, any private person can bring an action for violation of any of the provisions of this Act against the alleged violator to recover the actual damages together with reasonable attorney fees.  Under Section 40-4-102 and 40-4-103, the Attorney General or the County Attorneys of Wyoming can institute an action in the name of the state of Wyoming.  Limitation period for commencing an action is not specified in the Act.

Wyo. Stat. § 40-4-114

(b) Any injured person may maintain an action for violation of this act against the alleged violator to recover the actual damages sustained by the injured person together with reasonable attorneys fees and costs.

Wyo. Stat. § 40-4-102
If complaint shall be made to the attorney general of the state of Wyoming, or the county attorney of any county thereof, that any corporation, chartered in this state or any foreign corporation, doing business in this state by virtue of compliance with the laws thereof, or any person or firm of persons doing business in this state, is guilty of unfair discrimination, within the terms of this act [§§ 40-4-101 through 40-4-105], it shall be the duty of the attorney general, and the county attorneys of this state to institute an inquiry as to such discrimination, giving to the party complained against notice and reasonable opportunity to be heard, and if in the judgment of such prosecuting officers, or either of them, any corporation, foreign or domestic, or any person or firm of persons shall have been guilty of unfair discrimination, within the terms of this act, it shall be their duty to institute quo warranto proceeding, to forfeit the charter of said domestic corporation, or if a foreign corporation to procure an order of court to cause the permit of said corporation to do business in this state, immediately forfeited.

Wyo. Stat. § 40-4-103
If after the revocation of such charter, in the case of domestic corporation; or if its permit, if it be a foreign corporation, any corporation shall continue or attempt to do business in the state of Wyoming, it shall be the duty of the attorney general, by a proper suit, in the name of the state of Wyoming to oust such corporation from all business of every kind and character in said state of Wyoming.