Matthys, JanisJanisMatthys2023-04-132023-04-132022-09-19https://www.alexandria.unisg.ch/handle/20.500.14171/108259The principle according to which it is primarily the duty of the parties to present their case does not only apply in state court litigation but also in international arbi-trations seated in Switzerland. It is therefore essential for the parties and their legal counsel to know how to assert, dispute and substantiate facts so that the arbitral tribunal will admit the evidence and ultimately decide in their favour. For the determination of the facts, however, neither the arbitration law contained in Chapter 12 of the Federal Act on Private International Law (PILA) nor common arbitration rules provide any further guidance. Furthermore, the question how facts must be introduced into the arbitral proceedings has only received marginal attention in jurisprudence and scholarly writing. The present thesis first examines the extent to which principles of civil procedure law can be applied to international arbitrations seated in Switzerland. Subsequently, the duties of the parties to assert, dispute and substantiate facts are examined in more detail.deSchiedsrichterliches VerfahrenZivilprozessEDIS-5234Schiedsverfahrenarbitrationcivil procedureZivilprozessedoctoral thesis