Johann Ruben Leiss

Associate Professor II
Image of Johann Ruben Leiss
Norwegian version of this page
Mobile phone 00447824654
Visiting address Domus Academica Karl Johans gate 47 0162 Oslo
Postal address Postbox 6706 St. Olavs plass 0130 Oslo

Johann Ruben Leiss is an Associate Professor II (15%) at the Institute for Private Law at the Law Faculty of the University of Oslo. His work is inter alia related to the Centre on Experiential Legal Learning (CELL).

Johann Ruben Leiss is an Associate Professor at the Høgskolen i Innlandet, Lillehammer. In 2019/20, Leiss held the Chair of Public and International Law at the Georg-August-University Göttingen as a deputy professor (Lehrstuhlvertreter). Leiss obtained his PhD from the University of Oslo in 2019 where he worked as a research Fellow and doctoral candidate from 2014. In 2015, he was a Visiting Research Fellow at the Lauterpacht Centre for International Law, University of Cambridge (UK), and Visiting Research Scholar at Jesus College.

In 2014, he obtained the German second state examination at the Highest Court in (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 2012, he obtained a Master in Comparative, European and International Laws from the European University Institute in Florence (EUI). 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 Professor Andreas L. Paulus and for the Joint Project “German Precursors to International Constitutionalism” between the Hebrew University (Jerusalem) and the University of Göttingen.

Tags: Public International Law, International Dispute Settlement, International Courts and Tribunals, legal theory, Human Rights, Comparative Law, Private international law, Constitutional Law, European Law


  • Leiss, Johann Ruben (2022). Jus Contra Bellum in Cyberspace and the Sound of Silence. Oslo Law Review. ISSN 2387-3299. 9(1), p. 26–49. doi: 10.18261/olr.9.1.2.
  • Paulus, Andreas L. & Leiss, Johann Ruben (2019). The German Constitutionalism and Global Law Transfers. In Holterhus, Till Patrick (Eds.), The Law Behind Rule of Law Transfers. Nomos. ISSN 978-3-8487-5716-9.
  • Paulus, Andreas L. & Leiss, Johann Ruben (2018). The German Constitutionalism and Global Law Transfers. Goettingen Journal of International Law. ISSN 1868-1581. 9, p. 35–69. doi: 10.5771/9783845298481-37. Full text in Research Archive
  • Andenæs, Mads & Leiss, Johann Ruben (2018). The Systemic Relevance of "Judicial Decisions" in Article 38 of the ICJ Statute. Zeitschrift für ausländisches öffentliches Recht. ISSN 0044-2348. 77, p. 907–972.
  • Andenæs, Mads & Leiss, Johann Ruben (2016). Article 38(1)(d) ICJ Statute and the Principle of Systemic Institutional Integration. Social Science Research Network (SSRN). ISSN 1556-5068.
  • Leiss, Johann Ruben (2015). One Court, Two Voices: Case Note on the First Senate’s Order on the Ban on Headscarves for Teachers from 27 January 2015: Case No. 1 BvR 471/10, 1 BvR 1181/10. German Law Journal. ISSN 2071-8322. 16(4), p. 901–916. doi: 10.1017/s2071832200019945.

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  • Leiss, Johann Ruben (2015). Towards an Integrated, Predictable and Coherent International Legal System: A Defence of Proportionality Balancing. Voelkerrechtsblog.

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Published Apr. 26, 2022 9:21 AM - Last modified Apr. 27, 2022 9:12 AM


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