In principle, lawyers, including those who are active in international legal relations, are admitted to practice in one country and practice only in that country. We recommend that, within the scope of an attorney cooperation with a German lawyer and the corresponding colleague from the target country, the entire spectrum of advice should be covered. Colleagues on site, not only have better contacts to the individual authorities, but can usually, due to many years of experience, ensure better enforceability than from the location Germany there. This applies not only to non-European countries, but also to European countries, as experience has shown. Unfortunately, language barriers still play an important role in this context, since English is recognized worldwide as the language of communication, but correspondence with the relevant courts must be conducted in their native language. In Germany, the language of the courts is German, even though there are already efforts to be able to conduct court proceedings before German courts in English on the basis of German law. The aim is to make Germany even more attractive as a business location.