Court of Justice 17 July 2014, Case C-553/12 P: Judgment of the Court (Third Chamber) of 17 July 2014  — European Commission v Dimosia Epicheirisi Ilektrismou AE (DEI), Hellenic Republic, Energeiaki Thessalonikis AE, Elliniki Energeia kai Anaptyxi AE (H.E. & D.S.A.) (Appeal — Competition — Articles 82 EC and 86(1) EC — Maintenance of preferential rights granted by the Hellenic Republic in favour of a public undertaking for the exploration and exploitation of lignite deposits — Exercise of those rights — Competitive advantage on the markets for the supply of lignite and wholesale electricity — Maintenance, extension or strengthening of a dominant position)

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