Wash. Rev. Code § 19.86.030 : — BUSINESS REGULATIONS-MISCELLANEOUSUNFAIR BUSINESS PRACTICES-CONSUMER PROTECTION — Contracts, combinations, conspiracies in restraint of trade declared unlawful TEXT PDF Every contract, combination, in the form of trust or otherwise, or conspiracy in restraint of trade or commerce is hereby declared unlawful. RCW 19.86.030 1961 c 216 § 3. Monopolies and trusts prohibited: State Constitution Art. 12 § 22.