An interpretative analysis of the European ne bis in idem principle through the lens of ECHR, CFR and CISA Provisions: Are three streams flowing in the same channel?
/The ne bis in idem principle (procedural defence) proscribes multiple criminal proceedings and punishments for the same criminal offence/conduct, which is predicated on a final verdict of acquittal or conviction by a court of competent jurisdiction. Incorporated as a fundamental human right through Article 4 of Protocol No. 7 annexed to the ECHR and fundamental right safeguarded through Article 50 CFR, the principle is conjoined with the right to free movement of persons through Article 54 CISA. An evaluation of the characteristics, substance, rationale, scope, and limitations associated with the autonomous procedural defence reveals corresponding purposes. CJEU and ECtHR jurisprudence have delineated the scope and limitations of the procedural defence and the two European courts have reciprocally influenced their respective case law. Definitive and practical judicial guidelines on the application of the principle facilitate consistency of approach by diverse national legal systems consistent with the principle of legality.
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