Research at the professorship is dedicated to public international law and international administrative law, in particular the law of international institutions, human rights law, law and development, as well as comparative and interdisciplinary foundations, especially from the perspective of the Global South.

The following is an overview of Prof. Michael Riegner's research interests and projects. A complete list of publications can be found on this page.

International administrative law

International law

Comparative constitutional law

Science communication and knowledge transfer

  • Co-editor and co-responsible for the DFG-project Völkerrechtsblog
  • Consultant for the German Federal Ministry for Economic Cooperation and Development, Gesellschaft für Internationale Zusammenarbeit (GIZ) and international organizations

Current lectures and events

  • Conference: Annual conference of the “World Comparative Law” journal and its network, Berllin/Erfurt, 30.06./01.07.22
  • Workshop: "Contestations of liberalism in German and Brazilian constitutional law" at Humboldt University Berlin on 27./28. June 2022
  • Workshop: "Varieties of constitutionalism and constitutional democracy in Brazil and Germany" (Varieties of Constitutionalism), Insper São Paulo, 07.-08.03.2022
  • Guest Lecture: "Hate Speech in Comparative Constitutional Law", Insper São Paulo, 03.03.2022
  • Lecture: "Canonizing the Corporation", Frankfurt am Main, 28.02.2022
  • Lecture on the process of making and the content of the documentary film "Jatun Yacu - Amazon of Rights", Bogotá, 09.02.2022
  • Panel discussion "Religion - Society - World Relationship", presentation of the research project "Varieties of Constitutionalism", Erfurt, 08.12.2021
  • Panel discussion "Cities and their global networks - reshaping global governance and international law?", The Hague, 17.11.2021
  • Presentation "Varieties of Constitutionalism in North-South perspective", 5th Annual Conference Law and Development Research Network, Nelson Mandela University Port Elizabeth, South Africa, 24-26.11.2021
  • "Promises and pitfalls of a framework treaty for business and human rights", Input to the webinar series "Supporting the operation of a framework treaty in practice", University of Dundee, 30.9.2021
  • Discussion series on the book launch "The Global South and Comparative Constitutional Law", University of Hong Kong, 2.9.2021; Insper São Paulo, 30.4.2021; University of Johannesburg, 28.4.2021
  • Lecture and Panel "Varieties of Constitutionalism", ICON-S Mundo Conference (online), 9.7.2021
  • "Regulation of extractive industries from a sustainable development perspective", University of Antwerp (online), 31.3.3021
  • "Trump vs. Facebook: On the Constitutionalisation of Transnational Expression Law on Digital Platforms", University of Bremen (online), 16.2.2021