The Federal Law on Private International Law (IPRG) is a Swiss law that defines the rules for the application of law in international legal cases. It regulates which law to apply if a dispute has a connection with several countries. Among other things, the IPRG determines which court is competent to decide a case and how foreign decisions are recognized in Switzerland. It also contains provisions on the recognition and enforcement of foreign arbitral awards. The IPRG is important for legal certainty and international cooperation in legal matters.