91Where, in establishing an infringement of Articles 101 and 102 TFEU, the Commission relies on documentary evidence, the burden is on the undertakings concerned not merely to submit an alternative explanation for the facts found by the Commission, but to show that the evidence relied on in the contested decision is insufficient to establish the existence of an infringement. It must be considered that, where the Commission relies on direct evidence, the burden is on the undertakings concerned to show that such evidence is insufficient. Such a reversal of the burden of proof does not infringe the principle of the presumption of innocence (see judgment of 27 June 2012, Coats Holdings v Commission, T‑439/07, EU:T:2012:320, paragraph 39 and the case-law cited).