47In addition, it should be noted that, under Article 4(3) TEU, Member States are obliged not to detract, by means of national legislation, from the full and uniform application of EU law; nor may they introduce or maintain in force measures which may render ineffective the competition rules applicable to undertakings (see, to that effect, judgment of 19 March 1992, Batista Morais, C‑60/91, EU:C:1992:140, paragraph 11 and the case-law cited).
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