Assistant Professor in Public Law, Fellow of Sidney Sussex College
Research centres and interest groups
CV / Biography
Stefan is Assistant Professor in Public Law and a Fellow and Director of Studies at Sidney Sussex College. He completed his first degree in law at the University of Bayreuth (2011) in Germany. After brief stints working for a commercial law firm in Munich and for the Research Services of the German Bundestag in Berlin, Stefan earned an LL.M. from University College London (2013). Inspired to pursue a career in academia, he completed his doctoral work at the University of Cambridge (2018) and was the inaugural Research Fellow in Civil and Political Rights at Bonavero Institute, University of Oxford (2017-2021). You can follow Stefan on Bluesky and discover his papers on ResearchGate.
Research
Stefan’s research interests are broadly in the field of public and constitutional law, as well as human rights and legal methodology. His first book Towards the Environmental Minimum (Cambridge University Press, 2021) combines these interests, arguing for the recognition of a comprehensive framework that addresses the relationship between human rights and environmental harm. The argument is based on a unique case law dataset of the European Court of Human Rights, along with other regional human rights courts that is freely available for research and teaching purposes here. Stefan has previously consulted on legal challenges against breaches of air quality and emission targets in Europe, and the legal relevance of environmental harms more generally, notably under the Human Rights Act 1998.
The core research question of his work on free expression and protest is how the law should respond to the prevalence and abuse of private power, especially by structurally dominant platforms that operate online. This may require the law to revisit some of the principles and assumptions underlying conventional offline approaches to these rights, chiefly with respect to the scope for legitimate suppression of hate speech as well as the limits on the contractual autonomy of social media platforms with their users. Stefan has given interviews to various media outlets on questions of free expression and social media, including the BBC World Service and LBC.
Beyond human rights, Stefan is generally interested in public and constitutional law, particularly as it operates in the United Kingdom, Germany and the European Union. He spearheaded research in Oxford on the prorogation of the UK Parliament and appeared on BBC News television and various radio outlets outlets to offer legal commentary on the proceedings before the Supreme Court in 2019. He writes and blogs frequently on legal developments, often drawing comparisons between legal systems and reflecting on deepening European integration.
Teaching
Stefan lectures on the Constitutional Law Paper and Human Rights Law Paper on the Law Tripos as well as the LLM course on Advanced Public Law. He supervises undergraduates in constitutional law and human rights, and PhD candidates in public law (including comparative), constitutional theory and legal methodology. In Oxford, Stefan lectured on the undergraduate Human Rights Law course and the BCL course Constitutional Principles of the EU.
Publications
Books
Towards the Environmental Minimum - Environmental Protection through Human Rights (Cambridge University Press, 2021)

Articles
"Mental health-related limitations and political leadership in Germany: A multidisciplinary analysis of legal, psychiatric, and ethical frameworks" (2023) 89 International Journal of Law and Psychiatry 101908
"Private Censorship and Structural Dominance: Why Social Media Platforms Should Have Obligations to their Users under Freedom of Expression" (2022) Cambridge Law Journal
"Unconstitutional Prorogation of Parliament" [2020] Public Law 529
"Excavating Landmarks—Empirical Contributions to Doctrinal Analysis" (2019) 32 Journal of Environmental Law 221
"The Problem with the Normative Content of Section 24 of the Constitution of South Africa" (2019) 37 Nordic Journal of Human Rights 105
"The Online Harms White Paper: Comparing the UK and German Approaches to Regulation" (2019) 11 Journal of Media Law 41
"Is the ‘living instrument’ approach of the European Court of Human Rights compatible with the ECHR and International Law?" (2017) 23 European Public Law 587
"What red lines, if any, do the Lisbon Judgments of European Constitutional Courts draw for future EU integration?" (2014) 15 German Law Journal 599
"Der Umfang des Umweltschutzes in der Rechtsprechung des Europäischen Gerichtshofs für Menschenrechte" (2014) 36 Natur und Recht 330
Book Chapters
"Germany" in Liora Lazarus, Christos Kypraios, Danilo B. Garrido Alves (ed(s)), Preliminary Human Rights Assessment of Legislative and Regulatory Responses to the COVID-19 Pandemic across 27 Jurisdictions (Bonavero Institute of Human Rights, University of Oxford, 2020), pp. 177-189

"The Rationale of Constitutions from a Cultural Science Viewpoint" in Markus Kotzur (ed(s)), Peter Häberle on Constitutional Theory - Constitution as Culture and the Open Society of Constitutional Interpreters (Hart / Nomos, 2018), pp. 229 - 256

"The Open Society of Constitutional Interpreters - A Contribution to a Pluralistic and "Procedural" Constiutional Interpretation" in Markus Kotzur (ed(s)), Peter Häberle on Constitutional Theory - Constitution as Culture and the Open Society of Constitutional Interpreters (Hart / Nomos, 2018), pp. 129 - 166
