McDonald's has filed an antitrust lawsuit accusing Tyson Foods Inc. and other large meatpackers of conspiring to raise the wholesale price of beef in violation of the Sherman Act.

Represented by Cadwalader, Wickersham & Taft, the fast-food dining giant alleges it paid "artificially inflated prices" for its main hamburger ingredient and demands triple damages from the "world's largest meat processing and packing companies."