In In re: Aftermarket Filters Antitrust Litigation, Florida’s attorney general launched an action alleging violaitons of federal and state antitrust laws, against nine of the biggest manufacturers of automotive filters in the U.S, including Honeywell International, alleging that through numeous secret meetings among its top executives, the defendant companies schemed to maintain inflated prices for oil, air, fuel, and transmission filters by conspiring to 1) fix prices; 2) allocate customers; 3) eliminate competition in the auto filter market; and 4) issue misleading letters to justify their price hikes. This Northern Disrict of Illinois suit is the first of its kind since the federal government’s 2008 probe of the automotive filter market, which was triggered by private actions on behalf of direct purchaser retailers and consumers.