Case T-11/05: Judgment of the General Court of 19 May 2010 — Wieland-Werke and Others v Commission (Competition — Agreements, decisions and concerted practices — Copper plumbing tube industry — Decision finding an infringement of Article 81 EC — Continuous and multiform infringement — Ne bis in idem principle — Fines — Actual impact on the market — Size of the relevant market — Duration of the infringement — Attenuating circumstances)