In accordance with the principle of effectiveness, Member States shall ensure that all national rules and procedures relating to the exercise of claims for damages are designed and applied in such a way that they do not render practically impossible or excessively difficult the exercise of the Union right to full compensation for harm caused by an infringement of competition law. In accordance with the principle of equivalence, national rules and procedures relating to actions for damages resulting from infringements of Article 101 or 102 TFEU shall not be less favourable to the alleged injured parties than those governing similar actions for damages resulting from infringements of national law.