Blewett v. Abbott Laboratories
In Blewett v. Abbott Laboratories, 86 Wn. App. 782, 938 P.2d 842 (Wash. Ct. App. 1997) the Washington Court of Appeals ruled that an indirect purchaser could not bring an antitrust action under the Washington Consumer Protection Act because of the broad federal harmonization provision - "the courts shall be guided by final decisions of the federal courts . . . interpreting the various federal statutes dealing with the same or similar matters."