Judgment of the Legality of the Investigation of the Trap and the Criteria for Significant Impact - Focused on German Criminal Law and European Court of Human Rights Precedents

This paper analyzes the role and limitations of the “significant influence criterion” (Erhebliche Einwirkung) in assessing the legality of entrapment and examines key precedents set by the European Court of Human Rights (ECHR) that support this criterion. While entrapment is an effective tool for crime prevention and apprehending offenders, it also carries the risk of infringing on suspects' autonomous decision-making and their right to a fair trial. In German criminal law, the significant influence criterion goes beyond merely confirming the suspect’s intent by focusing on the degree of state intervention and the factors that may have induced the suspect to commit the crime. This criterion evaluates whether the suspect independently chose to commit the offense or was led to do so due to substantial state involvement. The ECHR, through cases such as Teixeira de Castro v. Portugal and Ramanauskas v. Lithuania, has determined that when law enforcement’s intervention distorts the suspect’s volition or provokes the crime, such investigations constitute a violation of human rights and are unlawful. Particularly, Article 6 of the European Convention on Human Rights guarantees the right to a fair trial, and the Court has deemed this right to be severely compromised when a crime involves strong state inducement. This paper concludes that the significant influence criterion plays a vital role in defining the legal boundaries of entrapment. It highlights the necessity and application of this criterion as a legal standard to protect suspects’ autonomy and rights. Through this analysis, the paper discusses the permissible scope of entrapment and ways to ensure fairness in investigations, with the aim of contributing to future legal developments in this field.