Judgment of the General Court (Eighth Chamber) of 10 April 2024.#European Parliament v Union Technique du Bâtiment SA and Argest SA.#Arbitration clause – Contract for preservation and safety works on the Maison Jean Monnet – Framework contract for architectural, technical and financial assistance and advice – Damage affecting the roof – Claim for compensation – 10-year guarantee – Application of French and Luxembourg law – Default interest.#Case T-749/22.