Invited Talks and Presentations

  • Unionsbürgerschaft: föderale Zugehörigkeit oder Migrationsstatus?,
    Invited talk, held at the University of Constance as part of the conference „Deutschland als Einwanderungsland“, Constance, 11/12 May 2023.
  • Europäischer Grundrechtsschutz in Zeiten der Krise,
    Inauguration Lecture, held at the University of Leipzig, 21 April 2023.
  • Die Rechtsprechung des Bundesverfassungsgerichts zur europäischen Integration,
    Participation in a panel discussion together with Prof. Dr. Stephan Harbarth, LL.M. (Yale), President of the German Federal Constitutional Court and Prof. Dr. Frank Hoffmeister, Chairman of the EUD Brussels, Brussels, 24 October 2022.
  • Content Regulation and Fundamental Rights in Europe,
    Invited talk, held at the University of Trier as part of the conference „Content Regulation in the EU“, Trier, 13/14 October 2022.
  • Einheitliche Auslegung und Vorrang des Unionsrechts im Dialog der Gerichte,
  • Presentation and participation in a panel discussion as part of the conference on the occasion of the 70th anniversary of the ECJ at the German Federal Ministry of Economic Affairs and Climate Action, Berlin, 9 September 2022.
  • Französisches und deutsches Europarecht? Zu Themen- und Wahrnehmungsunterschieden im französischen und deutschen Rechtsdenken zu Europa,
    Invited talk, held at the Friedrich-Schiller-University Jena as part of the Lecture Series of the Center for European Studies (CEuS), Jena, 5 July 2022.
  • The Activism of National Constitutional Courts in Interpreting EU Law,
    Invited talk, held at the European University Institute in Florence as part of the conference „Revisiting Judicial Politics in the European Union“, Florence, 16-17 July 2022.
  • L’influence du populisme sur les changements constitutionnels – Le cas allemand (with Aurore Gaillet),
    Invited talk, held online as part of the conference “L’influence du populisme sur les changements constitutionnels – approche de droit comparé“ Université Toulouse I Capitole, Toulouse, 17-18 March 2022.
  • The Rule of Law and the National Judiciary Through the Lens of EU Law,
    Presentation, given within the framework of the Trinational Conference on “Rule of Law and the Judiciary in the EU Member States: Interdisciplinary and Comparative Perspectives“, Leipzig, 28 January 2022.
  • Domaines constitutionnels essentiels et droit européen: les expériences allemandes,
    Invited talk, held online as part of the conference of the French Senate on the topic „Le rôle des parlements nationaux dans l’Union européenne“, Paris, 6 December 2021.
  • Die politischen Parteien als Mittler der Demokratie auf europäischer Ebene,
    Invited talk, held at the University of Münster on occasion of the Franco-German Discussion Group on Public Law, Münster, 5-6 November 2021.
  • Constitutional Pluralism After PSPP,
    Invited talk, held online as part of the conference „The Future of EU Constitutionalism“, University of Ljubljana, 23-24 September 2021.
  • Wo beginnen und wo enden Spielräume bei der Anwendung des Unionsrechts?,
    Invited talk, held at the discussion group „Europäisches Verfassungsrecht“ on the framework topic of  “Ebenenübegreifende Koordinierung beim Grundrechtsschutz“, on occasion of the 80th annual conference of the Vereinigung der Deutschen Staatsrechtslehrer in Mannheim, 6-9 September 2021.
  • The Treaty of Lisbon – German and Portuguese perspectives,
    Online-panel discussion, organised by the European Law Students Association (ELSA), 14 June 2021.
  • The German Federal Constitutional Court as Guardian of Eu Fundamental Rights?,
    Online-presentation, KU Leuven, 14 June 2021.
  • The German PSPP-judgment and the dialectics of ultra vires review,
    Online-presentation, Maastricht University, 27 May 2020.
  • La notion de vulnérabilité en droit d‘asile allemand,
    Invited talk, held at the Université de Strasbourg as part of the conference “Les personnes vulnérables en droit d‘asile“, Strasbourg, 14 February 2020.

  • The Ambivalent Meaning of Discretion in EU Migration Law,
    Invited talk, held at the University of Constance as part of the Conference “The Constitutional Foundations of EU Migration Law“, Constance, 18-19 June 2019.

  • Methodische Herausforderungen der Rechtsvergleichung im europäischen und im deutsch-französischen Kontext,
    Invited talk, held at Humboldt-University Berlin as part of the Franco-Gereman research seminar “Neueste Entwicklungen im Öffentlichen Recht und in der Rechtstheorie in Frankreich und Deutschland“, 14 May 2019.

  • Ein neues Demokratieverständnis? Weimarer Parlamentarismus und Präsidialverfassung im Spiegel französischen Verfassungsrechts,
    Lecture, held at the Goethe-Nationalmuseum as part of the conference „100 Jahre Weimarer Reichsverfassung – Verfassungsgebung im internationalen Kontext“, Weimar, 4 and 5 April 2019.

  • The Application of the EU Charter of Fundamental Rights in Germany,
    Report, presented at the University of Oxford, Mansfield College, as part of the conference “The EU Charter of Fundamental Rights in the Member States“, Oxford, 22 and 23 March 2019.

  • Dublin III and Families,
    Invited talk, held at the University of Münster as part of the roundtable “Families on the Move: Asylum Law and International Family Law“, Münster, 8 and 9 February 2019.

  • Die Achtung grundrechtlicher Wesensgehalte im Europarecht,
    Ludwig-Maximilians-University Munich, 4 February 2019.

  • Core European Values under Pressure? The Crisis of the Rule of Law in Poland and Beyond,
    Panel discussion at Freie Universität Berlin as part of the Joint Interdisciplinary Doctoral Program „Human Rights under Pressure - Ethics, Law, and Politics“, Berlin, 16 January 2019.

  • Bürgerbeteiligung und Transparenz in der Gemeinsamen Handelspolitik,
    Invited talk, held as part of the conference “Die gemeinsame Handelspolitik im Europäischen Verfassungsverbund“ of the Wissenschaftlichen Gesellschaft für Europarecht, Passau, 15 - 16 November 2018.

  • The Crisis of the Rule of Law,
    Concluding Speech, held at the University of Osnabrück as part of the conference “The Crisis of the Rule of Law“, Osnabrück, 5 and 6 February 2018.

  • Das Migrationsrecht zwischen Menschenrechten und gesetzlicher Steuerung,
    Presentation, given at Leipzig University, 22 January 2018.

  • From Visegrad to Berlin: the future of Europe from a German perspective,
    Panel discussion at Leiden University as part of the conference “Brexit and the Future of the European Union – Europa Institute 60th anniversary conference“, Leiden 30 November - 1 December 2017.

  • Verfassungsgerichtliche Vorlagen an den EuGH,
    Invited talk, held at the Andrássy University Budapest as part of the conference „25 Jahre Maastrichter Verträge“, Budapest, 19 - 21 October 2017.

  • Das Migrationsvölkerrecht zwischen normativem Anspruch und Wirklichkeit,
    Presentation, given at the University of Mainz, 13 July 2017.

  • The Shaping Force of Comparison in Public Law,
    Invited talk, held as part of the 4th conference of the der International Society of Public Law (ICON-S) “Courts, Power, Public Law“, Copenhagen, 5 - 7 July 2017.

  • Grundrechtsflucht ins Völkerrecht? Internationale Kooperation als Grund- und Menschenrechtsproblem,
    Postdoctoral lecture (Habilitationsvortrag), held at the Humboldt-University Berlin, 29 June 2017.

  • Brexit – Area of Freedom, Security and Justice and Free Movement of People,
    Presentation, given at the Universidad de Lisboa as part of the European Constitutional Law Network (ECLN) conference “Brexit – Challenge or End of EU Constitutional Law?“, Lisbon, 23 - 24 June 2017.

  • Nationale Verfassungsidentität als Narrativ der europäischen Integration?,
    Invited talk, held as part of the conference “Die Neuerfindung Europas – Bedeutung und Gehalte von Narrativen für die europäische Integration“, Discussion group Recht und Politik in der Europäischen Union, Friedrich-Ebert-Stiftung, Berlin, 27 - 29 April 2017.

  • Die dritte Phase des Migrationsrechts – Renationalisierung, Entparlamentarisierung, Entrechtlichung?,
    Invited talk, held at the University of Bielefeld, 8 February 2017.

  • Das OMT-Urteil des Bundesverfassungsgerichts,
    Presentation, given at the workshop discussion “Das OMT-Urteil des Bundesverfassungsgerichts vom 21. Juni 2016 – Erste Einschätzungen“, organised by the Walter-Hallstein-Institut für europäisches Verfassungsrecht, Humboldt-Universität zu Berlin, Berlin, 23 June 2016.

  • Verwaltungsspielräume als Mehrebenenräume,
    Invited talk, held at the Max-Planck-Institute for Comparative Public Law and International Law, on occasion of the Max Planck Research Forum “New Voices in international, European and comparative public law“, Heidelberg, 24 February 2016. 

  • Die Flüchtlingskrise als Prinzipienkrise: Solidarität, gegenseitiges Vertrauen und loyale Zusammenarbeit
    Invited talk, held at the University of Passau, as part of the conference “Quo vadis (in) Europa? Das europäische Migrationsrecht in der Krise“, Passau, 10 - 11 December 2015.

  • Political Control by Member States’ Institutions – Exemplified by the German Bundestag,
    Invited talk, held at the University of Salzburg, as part of the conference “The ECB in the Institutional, Political, and Economic Framework of the Post-crisis EU”, Salzburg, 5 - 6 November 2015.

  • Verbundtechniken des Unionsrechts,
    Presentation and moderation of the panel discussion on the occasion of the colloquium “Verfassungsentwicklung in Europa – Die Leipziger Staatsrechtslehrertagung 2000 + 15“, honouring Ingolf Pernice, Humboldt-Universität zu Berlin, Berlin, 10 July 2015.

  • Die demokratische Legitimation der EU-Handelspolitik nach Lissabon – Bürgerinitiative und Transparenz,
    Invited talk, held as part of the conference “Die gemeinsame Handelspolitik der Europäischen Union fünf Jahre nach Lissabon – Quo Vadis?“, organised by Prof. Dr. Marc Bungenberg, LL.M. (University of Siegen) and Prof. Dr. Christoph Herrmann, LL.M. (University of Passau) at the Stiftung Wissenschaft und Politik (SWP), Berlin, 5 - 6 March 2015.

  • Grundlagen der Vergleichung verfassungsrechtlicher Integrationsmodi,
    Invited talk, held at the University of Zurich as part of the conference “Die supranationale Strafrechtspflege der Europäischen Union im Lichte der Strafrechtsvergleichung“, DFG-Netzwerk „Die Rolle der Strafrechtsvergleichung bei der Europäisierung der Strafrechtspflege“, Zurich 15 - 17 January 2015.

  • Rechtsschutzverfahren vor mitgliedstaatlichen Verfassungsgerichten am Beispiel Deutschlands,
    Invited talk, held at the University of Innsbruck as part of the conference “Die ‚schleichende‘ Reform der EU im Zuge der Bekämpfung der Wirtschafts- und Staatsschuldenkrise“, Innsbruck, 26 - 27 November 2014.

  • National Constitutions, the Courts and Euro-Crisis Law,
    Invited talk, held at the European University Institute Florence as part of the conference “Constitutional Change Through Euro-Crisis Law“, Florence, 17 - 18 October 2014.

  • Exceeding Judicial Competence in the Name of Democracy,
    Invited talk, held at the University of Turku as part of the seminar “Ruling the European and Monetary Union“, Turku, 15 September 2014. 

  • Das Bundesverfassungsgericht im System des Grundgesetzes,
    Norwegian Embassy Berlin, presentation held before the Standing Committee on Scrutiny and Constitutional Affairs, 2 September 2014.

  • Preliminary references as a mean to secure the rule of law during the crisis?
    Invited talk, held at the University of Kent as part of the conference „Assessing the EU’s Responsiveness to Constitutional Rights“, Canterbury, 18 - 29 August 2014.

  • Protecting Fundamental values in the EU Member States: Procedures and Instruments,
    Presentation and moderation of the panel discussion, on the occasion of the workshop “From Commitment to action: Fundamental values in the EU Member States“, jointly organised by the Walter-Hallstein-Institut für europäisches Verfassungsrecht and Democracy Reporting International, Berlin, 30 January 2014.

  • Vom Verfassungsgerichtsverbund zum Parlamentsverbund? – Chancen und Grenzen des Verbundmodells für den europäischen Parlamentarismus,
    Invited talk, held as part of the conference ‘Modelle des Parlamentarismus im 21. Jahrhundert“, discussion group Recht und Politik in der Europäischen Union, Friedrich-Ebert-Stiftung, Berlin, 27 - 29 January 2014.

  • Die Wirtschaftskrise als Chance für Europas Zukunft? Binnenmigration und institutionelle Reformen,
    Panel discussion, Berlin-Brandenburgische Akademie der Wissenschaften, lecture series “Salon Sophie Charlotte“ of the Junge Akademie, Berlin, 18 January 2014.

  • Permeability in European Constitutional Law. Comparing Integration Clauses at State and Union Level,
    Invited talk, held at Maastricht University as part of the conference Ius Commune Conference 2013 (Workshop National Constitutional Avenues for further EU Integration), Maastricht, 28 - 30 November 2013.

  • Comparative Reasoning and the Making of a Common Constitutional Law. The Europe Decisions of National Constitutional Courts,
    Invited talk, held at the Hertie School of Governance Berlin as part of the European and Global Governance colloquium, Berlin, 18 September 2013.

  • Les fonctions de l’identité dans un cadre fédéral,
    Invited talk, held at the Faculté de droit et de science politique d’Aix-Marseille as part of the conference “L’identité à la croisée des états et de l’Europe: quels sens? Quelles fonctions?“, Aix-en-Provence, 23. - 24 May 2013.

  • Operating Europe’s composite Constitution,
    Invited talk, held at Maastricht University as part of the concluding conference of the research project “European National Constitutional Law Project (EuNaCon)“, Maastricht, 20 - 22 February 2013.

  • Die Europaentscheidungen der Verfassungsgerichte,
    Invited talk, held at the Wirtschaftsuniversität Wien as part of the Österreichischer Europarechtstage 2012 on the topic of “Kooperation der Gerichte im europäischen Verfassungsverbund – Grundfragen und neueste Entwicklungen“, Vienna, 28 - 29 September 2012.

  • Verfassungsrechtliche Vorgaben für die Eurorettung: Die Entscheidung des BVerfG vom 12. September 2012 in Sachen ESM und Fiskalvertrag (Eilverfahren),
    Presentation, given at the Abgeordnetenhaus von Berlin, 25 September 2012.

  • La Cour constitutionnelle allemande et l’intégration européenne,
    Presentation and panel discussion, held at the Faculté de droit et de science politique d’Aix-Marseille, Aix-en-Provence, 13 - 14 September 2012.

  • Reforming Europe’s Fiscal and Economic Policy,
    Invited talk, held at the European Parliament on the occasion of the presentation of the study “Reform Steps Towards A Democratic Foundation of Europe’s New Economic and Financial Constitution”, Brussels, 27 June 2012.

  • Parliamentarization of the Deficit Procedure under Article 126 TFEU and Institutional Reinforcements of the New Fiscal Architecture,
    Presentation, given at Humboldt-University Berlin as part of the workshop discussion (Roundtable – Practice Meets Science) “The Legitimacy of Europe’s Economic and Financial Constitution”, organised by the Walter-Hallstein-Institut für Europäisches Verfassungsrecht, Berlin, 27 April 2012.

  • Comparative Reasoning and the Making of a Common Constitutional Law,
    Invited talk, held at New York University (NYU) as part of the conference “The Changing Landscape of German Constitutionalism: Comparative Public Law in Germany”, organised by Joseph H. H. Weiler and Armin v. Bogdandy, New York City, 22 - 23 April 2012..

  • The European Convention on Human Rights (ECHR) as Part of the National Constitutional Standards,
    Invited talk, held at Eötvös Loránd Universität (ELTE) Budapest, as part of the conference “The European Constitutional Area and National Constitutionalism”, organised by the faculty of law of the ELTE and the Max-Planck-Institute for Comparative Public Law and International Law (Heidelberg), Budapest, 26. - 27 January 2012.

  • Institutional Aspects of the EU’s Accession to the European Convention on Human Rights: On the Way Towards a Better Enforcement of Fundamental Rights?,
    Invited talk, held at ELTE Budapest as part of the International Workshop on Human Rights Enforcement Mechanisms, Budapest, 24 - 25 November 2011.

  • Vorläufige Freiheitsentziehungen als Instrument zur Terrorismusbekämpfung – Das Beispiel der französischen garde à vue (Comment to Harald Weiß),
    Comment on the Lecture by Harald Weiß, Centre Marc Bloch as part of the 6th Deutsch-Französischen Doktorandenseminars zur Rechtsvergleichung im Öffentlichen Recht, Berlin, 23 - 25 June 2011.

  • La jurisprudence ‘Lisbonne’ du Conseil constitutionnel et du Bundesverfassungsgericht dans une perspective comparative,
    Invited talk, held at Université Paris 1 – Panthéon/Sorbonne on occasion of the Rencontres franco-allemandes de jeunes chercheurs en droit international on the topic of “Pratiques comparées du droit international en France et en Allemagne”, Paris, 11 - 15 October 2010.

  • Lisbon Before the Courts: Comparative Perspectives,
    Presentation, given at the CEU San Pablo University Madrid as part of the conference by the European Constitutional Law Network (ECLN) “Europe’s Constitutional Challenges in the Light of the Recent Case Law – Lisbon and Beyond“, Madrid, 6 - 8 October 2010.

  • Weichensteller v. Brückenwächter? Die Lissabon-Rechtsprechung von Conseil constitutionnel und Bundesverfassungsgericht in verfassungsvergleichender Perspektive,
    Invited talk, held at the Université Strasbourg on the occasion of the 5th Deutsch-Französischen Doktorandenseminars zur Rechtsvergleichung im Öffentlichen Recht, Strasbourg, 24 - 26 June 2010.

  • Das Urteil des Bundesverfassungsgerichts zum Lissabonner Vertrag und seine Bedeutung für die deutsche Europapolitik,
    Invited talk, held at the Europäische Akademie, Berlin, 29 April 2010. 

  • On Ruptures, Reconfigurations and Continuities of European Constitutionalism,
    Invited talk, held at the Simon-Dubnow-Institut at Leipzig University as part of thee workshops “Kelsen, Schmitt, Arendt and the Possibilities of (International) Law – Workshop I: Constitutionalisation“, Leipzig, 11 - 12 June 2009.

  • Vertragsauslegung nach Lissabon,
    Presentation, given at Humboldt-University Berlin as part of the conference on the occasion of the 10 year anniversary of the Walter-Hallstein-Institut für Europäisches Verfassungsrecht, Berlin, 25 October 2010.