Case T-208/13: Judgment of the General Court of 28 June 2016 — Portugal Telecom v Commission (Competition — Agreements, decisions and concerted practices — Portuguese and Spanish telecommunications markets — Non-competition clause in relation to the Iberian market inserted into the agreement for the acquisition by Telefónica of the share held by Portugal Telecom in the Brazilian mobile operator Vivo — Statutory safeguard ‘to the extent permitted by law’ — Obligation to provide reasons — Infringement by object — Ancillary restriction — Potential competition — Infringement by effects — Calculation of the amount of the fine — Request for the hearing of witnesses)