1. Member States shall ensure that, where in an action for damages the existence of a claim for damages or the amount of compensation to be awarded depends on whether, or to what degree, an overcharge was passed on to the claimant, taking into account the commercial practice that price increases are passed on down the supply chain, the burden of proving the existence and scope of such a passing-on shall rest with the claimant, who may reasonably require disclosure from the defendant or from third parties.

2. In the situation referred to in paragraph 1, the indirect purchaser shall be deemed to have proven that a passing-on to that indirect purchaser occurred where that indirect purchaser has shown that:

(a) the defendant has committed an infringement of competition law;

(b) the infringement of competition law has resulted in an overcharge for the direct purchaser of the defendant; and

(c) the indirect purchaser has purchased the goods or services that were the object of the infringement of competition law, or has purchased goods or services derived from or containing them.