Case C-280/06: Judgment of the Court (Grand Chamber) of 11 December 2007 (reference for a preliminary ruling from the Consiglio di Stato — Italy) — Autorità Garante della Concorrenza e del Mercato v Ente tabacchi italiani — ETI SpA, Philip Morris Products SA, Philip Morris Holland BV, Philip Morris GmbH, Philip Morris Products Inc. and Philip Morris International Management SA; and Philip Morris Products SA, Philip Morris Holland BV, Philip Morris GmbH, Philip Morris Products Inc. and Philip Morris International Management SA v Autorità Garante della Concorrenza e del Mercato, Ente tabacchi italiani — ETI SpA; and Philip Morris Products SA, Philip Morris Holland BV, Philip Morris GmbH, Philip Morris Products Inc. and Philip Morris International Management SA v Autorità Garante della Concorrenza e del Mercato, Amministrazione autonoma dei monopoli di Stato, Ente tabacchi italiani — ETI SpA (Competition — Imposition of fines where undertakings succeed each other — Principle of personal responsibility — Entities belonging to the same group of undertakings or answering to the same public authority — National law referring to Community competition law as source of interpretation — Questions referred for a preliminary ruling — Jurisdiction of the Court of Justice)