Case C-70/12 P: Judgment of the Court (Seventh Chamber) of 30 May 2013 — Quinn Barlo Ltd, Quinn Plastics NV, Quinn Plastics GmbH v European Commission (Appeal — Agreements, decisions and concerted practices — European market for methacrylates — Duration of the infringement — Presumption of innocence — Statement of reasons — Unlimited jurisdiction — General principles of the protection of legitimate expectations and equal treatment — Proportionality of the fine)