Case T-206/06: Judgment of the General Court of 7 June 2011 — Total and Elf Aquitaine v Commission (Competition — Agreements, decisions and concerted practices — Market for methacrylates — Decision finding an infringement of Article 81 EC and Article 53 of the EEA Agreement — Imputability of the unlawful conduct — Rights of the defence — Presumption of innocence — Obligation to state reasons — Principle of equal treatment — Principle that penalties must fit the offence — Principle of nullum crimen, nulla poena sine lege — Principle of sound administration — Principle of legal certainty — Misuse of powers — Fines — Attribution of liability for payment within a group of companies)