25It follows that one effect of a national rule such as that at issue in the main proceedings is likely to be that a national court may choose to refrain from referring questions for a preliminary ruling to the Court, in order to avoid, on the one hand, being disqualified and exposed to disciplinary penalties or, on the other, lodging requests for preliminary rulings that are inadmissible. Consequently, such a rule is detrimental to the prerogatives granted to national courts and tribunals by Article 267 TFEU and, consequently, to the effectiveness of the cooperation between the Court and the national court and tribunals established by the preliminary ruling mechanism.
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