Dr Heinrich Kühnert, MJur, is partner and Mag Philipp Böhler, LLM, is associate with DORDA Rechtsanwälte, Vienna. Dr Stephan Polster, MA, is partner with BECKER GÜNTHER POLSTER REGNER Rechtsanwälte, Vienna. All views expressed are those of the authors. For correspondence: <mailto:heinrich.kuehnert@dorda.at>. DOI: 10.21552/core/2017/1/8