Christiane von Bary, Marie-Therese Ziereis

Rückwirkung in grenzüberschreitenden Sachverhalten: Zwischen Statutenwechsel und ordre public

Volume 85 () / Issue 1, pp. 146-171 (26)
Published 20.01.2021

Retroactive Effect in International Matters, Change of the Applicable Law, and Public Policy. – While German law does provide for a detailed differentiation as regards retroactive effect in the domestic context (II.), retroactivity has rarely been discussed in transnational cases relating to civil matters. The national solutions cannot generally be transferred to the international level; instead, it is crucial to rely on the methods of private international law – in particular rules dealing with a change of the applicable law and with public policy. German private international law largely prevents retroactive effects from occurring through the methodology developed for dealing with a change of the applicable law (III.). Distinguishing between completed situations, ongoing transactions and divisible as well as indivisible long-term legal relationships, it is possible to ensure adherence to the principle of lex temporis actus. If the retroactive effect is caused by foreign law, it may violate public policy, which allows and calls for an adjustment (IV.). When determining whether a breach of public policy occurred in a case of retroactivity, it is necessary to consider the overall result of the application of foreign law rather than just the decision as to which foreign law is applicable. For guidance on whether such a result violates public policy, one has to look at the national principles dealing with retroactive effect.

Christiane von Bary Geboren 1988; Studium der Rechtswissenschaft (Erste Juristische Prüfung 2014) und Promotion (2017) an der Universität Passau; Rechtsreferendariat in München und Toronto (Zweites Staatsexamen 2018); seit 2019 Akademische Rätin a.Z. und Habilitandin am Institut für Internationales Recht, Lehrstuhl für Bürgerliches Recht, Internationales Privatrecht und Rechtsvergleichung, Ludwig-Maximilians-Universität München.

Marie-Therese Ziereis Geboren 1992; Studium der Rechtswissenschaft an der LMU München; Referendariat in München und Wellington, Neuseeland; wissenschaftliche Mitarbeiterin am Lehrstuhl für Bürgerliches Recht, Internationales Privatrecht und Rechtsvergleichung an der LMU München; 2020 Promotion; seit 2020 Regierungsrätin im Bayerischen Staatsministerium für Wissenschaft und Kunst und Lehrbeauftragte an der LMU München.