Johann Ruben Leiss

Research interests

• Public International Law
• International Courts and Tribunals
• European Law
• Constitutional Law
• Comparative Law

Teaching

• TYSJUR1 - Tysk for jurister
• JUS5240 - Comparative Private Law
• JUS5930 - Comparative Public Law
• TULSA JUS5540 - Public International Law

Background

Johann Ruben Leiss was born in 1984. He graduated from the Faculty of Law at the University of Göttingen in 2011. Leiss worked as a Research assistant at the Göttingen Institute of Public International and European Law, Chair of Prof. Andreas L. Paulus (Judge at the German Federal Constitutional Court) and for the Joint Project “German Precursors to International Constitutionalism” between the Hebrew University (Jerusalem) and the University of Göttingen. In 2011/2012 he studied at the European University Institute in Florence (EUI) and obtained a Master in Comparative, European and International Laws. From 2012 – 2014 Leiss did his Referendariat (practical legal education) at the Kammergericht in Berlin. During his Referendariat he worked inter alia for the Law Firm Redeker/Sellner/Dahs, the German Foreign Ministry and the German Federal Constitutional Court. In 2014 he obtained the German second state examination. Leiss was appointed a position as a Research Fellow at the Department of Private Law, University of Oslo, in October 2014.

He was a Visiting Research Fellow at the Lauterpacht Centre for International Law, University of Cambridge (UK), and Visiting Research Scholar at Jesus College.

Publications

• Leiss, Johann Ruben, “Article 103” (with BVR Prof. Dr. Andreas L. Paulus) in: The Charter of the United Nations: A Commentary (eds. Bruno Simma, Daniel- Erasmus Kahn, Georg Nolte, Andreas Paulus), 3rd Edition (2012, Oxford University Press)
• Leiss, Johann Ruben, "Towards an Integrated, Predictable and Coherent International Legal System: A Defence of Proportionality Balancing", (2015) Völkerrechtsblog
• Leiss, Johann Ruben, “The UNWGAD’s Opinion in the case concerning Julian Assange: Some remarks on ‘Elephants in the Room’”, (2014) Questions of International Law

• Leiss, Johann Ruben, “Article 38(1)(d) ICJ Statute and the Principle of Systemic Institutional Integration” (November 15, 2016) (with Professor Mads Andenas), University of Oslo Faculty of Law Research Paper No. 2016-20 (2016, SSRN)

Positions held

Member PhD council (Stipendiatrådet) (october 2014-october 2015)

Organization of conferences and seminars

• “Seminar on Customary International Law and Human Rights”, Palais des nations, Geneva, 4 May 2015 (with Mads Andenas).
• "Oslo Seminar on Coordinating Principles and Concepts Between International Courts and Tribunals", Oslo, 2 December 2016 (with Mads Andenas and PluriCourts).
• “The Marshall Islands cases and the Delimitation of Indian Ocean case before the ICJ – Insiders perspectives”, Oslo, 9 December 2016 (with Mads Andenas, Stian Øby Johansen and PluriCourts)

CV