Legal certainty (French sécurité juridique; German Rechtssicherheit) is understood today to be the constitutional principle of the dependability of a legal order; it thus is a fundamental part of the overarching concept of the rule of law. Today this principle is observed in many European states [13. 543–636][5. 543–636]. Legal certainty has been and continues to be used today generally as an argument in legislation and as a reference point both in the application of law and in j…