Changes

(1) Concerted action by defendants that (2) produce anticompetitive effects within the relevant product and geographic markets; (3) that the concerted action was illegal (unreasonable) and that (4) plaintiff was injured as a proximate result of the concerted action.  See, e.g., ''Gordon v. Lewistown Hosp.'', 423 F.3d 184, 207 (3d Cir. 2005) (citing ''Petruzzi's IGA Supermarkets, Inc. v. Darling-Delaware Co.'', 998 F.2d 1224, 1229 (3d Cir. 1993))

(1) Concerted action by defendants that (2) produce anticompetitive effects within the relevant product and geographic markets; (3) that the concerted action was illegal (unreasonable) and that (4) plaintiff was injured as a proximate result of the concerted action.  See, e.g., ''Gordon v. Lewistown Hosp.'', 423 F.3d 184, 207 (3d Cir. 2005) (citing ''Petruzzi's IGA Supermarkets, Inc. v. Darling-Delaware Co.'', 998 F.2d 1224, 1229 (3d Cir. 1993))