283In that regard, it must be recalled that the EU Courts are empowered to exercise their unlimited jurisdiction under Article 261 TFEU and Article 31 of Regulation No 1/2003 where the question of the amount of the fine is before them (judgment of 10 April 2014, Commission v Siemens Österreich and Others and Siemens Transmission & Distribution and Others v Commission, C‑231/11 P to C‑233/11 P, EU:C:2014:256, paragraph 126).