Antitrust laws in Washington are set forth under Title 19, Chapter 19.86.010 et seq of the Revised Code. According to Section 19.86.090, any private person who is injured by the violation of the provisions of this Act can bring a civil action to recover actual damages together with other costs including reasonable attorney fees. Pursuant to Section 19.86.080, an Attorney General may bring an action in the name of the State on behalf of a person residing in the state against any person who does an act that is prohibited or declared unlawful under the provisions of this Act. The Attorney General can recover the costs of action including a reasonable attorney fees. In Section 19.86.120, any action to enforce a claim for damages will be barred unless commenced within four years after the cause of action accrues.
Rev. Code Wash. (ARCW) § 19.86.090
Any person who is injured in his or her business or property by a violation of RCW 19.86.020, 19.86.030, 19.86.040, 19.86.050, or 19.86.060, or any person so injured because he or she refuses to accede to a proposal for an arrangement which, if consummated, would be in violation of RCW 19.86.030, 19.86.040, 19.86.050, or 19.86.060, may bring a civil action in superior court to enjoin further violations, to recover the actual damages sustained by him or her, or both, together with the costs of the suit, including a reasonable attorney’s fee.
Rev. Code Wash. (ARCW) § 19.86.080
The attorney general may bring an action in the name of the state, or as parens patriae on behalf of persons residing in the state, against any person to restrain and prevent the doing of any act herein prohibited or declared to be unlawful; and the prevailing party may, in the discretion of the court, recover the costs of said action including a reasonable attorney’s fee.
Rev. Code Wash. (ARCW) § 19.86.120
Any action to enforce a claim for damages under RCW 19.86.090 shall be forever barred unless commenced within four years after the cause of action accrues: PROVIDED, That whenever any action is brought by the attorney general for a violation of RCW 19.86.020, 19.86.030, 19.86.040, 19.86.050, or 19.86.060, except actions for the recovery of a civil penalty for violation of an injunction or actions under RCW 19.86.090, the running of the foregoing statute of limitations, with respect to every private right of action for damages under RCW 19.86.090 which is based in whole or part on any matter complained of in said action by the attorney general, shall be suspended during the pendency thereof.