Case T-201/17: Judgment of the General Court of 12 February 2019 — Printeos v Commission [Non-contractual liability — Competition — Cartels — Decision finding infringement of Article 101 TFEU — Fines — Judgment annulling the decision in part — Reimbursement of the principal amount of the fine — Default interest — Sufficiently serious breach of a rule of law conferring rights on individuals — Causal link — Harm — Article 266 TFEU — Article 90(4)(a), second sentence, of Delegated Regulation (EU) No 1268/2012]