‘In the case where, in the context of verification of compliance with a judgment delivered by the Court of Justice pursuant to article 260FEU of the FEU Treaty, a difference arose between the European Commission and the member state concerned as to whether national legislation or a national practice which the Court of Justice had not examined beforehand was appropriate for ensuring compliance with that judgment, the commission could not, by adopting a decision, resolve such a difference itself and draw from this the necessary inferences for the calculation of the penalty payment.’
WLR Daily, 15th January 2014
Source: www.iclr.co.uk