Judgment of the Court (First Chamber) of 13 December 2018.#Appeal — Actions for damages — Second paragraph of Article 340 TFEU — Excessive duration of the proceedings in two cases before the General Court of the European Union — Damage allegedly suffered by the applicants — Material damage — Bank guarantee charges — Causal link — Default interest — Non-material damage.#Joined Cases C-138/17 P and C-146/17 P.