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Prof. Dr. Christian Tietje

Juristischer Bereich
Universitätsplatz 5
D-06108 Halle (Saale)

Tel.: +49-(0)345-5523180
Fax: +49-(0)345-5527201

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Publications & Presentations


Selected Publications

  • Proportionality in Action: Comparative and Empirical Perspectives on the Judicial Practice (Cambridge University Press, forthcoming) (with Mota Kremnitzer and Talya Steiner).
  • The Proportionality Principle and the German Federal Constitutional Court: Origin, Structure, Practice, and Judicial Politics, in: Kremnitzer/Lang/Steiner (eds.), Proportionality in Action: Comparative and Empirical Perspectives on the Judicial Practice (Cambridge University Press, forthcoming).
  • The Autonomy of EU Law and the Future of Investor-State Dispute Settlement in Europe after Achmea, Europarecht 5/2018 (forthcoming – in German).
  • Regime collision between EU law and Investment law: Analyzing the Investment Tribunal’s Decision on the Achmea issue in the  Vattenfall case, Policy Papers on Transnational Economic Law No. 50, 2018.
  • Network Enforcement Act and Free Speech. Regulating private Internet-Intermediaries in Combating Hate Speech, Archiv des Öffentlichen Rechts 143 (2018), 220–250 (in German).
  • Ultra vires review of the ECB’s Policy of Quantitative Easing: An Analysis of the German Constitutional Court’s Preliminary Reference Order in the PSPP case, in: CMLRev. 55 (2018), 923–952.
  • Community Interests in World Trade Law, in: Community Interests Across International Law (E. Benvenisti/G. Nolte, eds. Oxford University Press, 2018), 191–220 (with Chr. Tietje).
  • Book Review Philipp Donath, Proliferation und Legitimation der internationalen Investitionsschiedsgerichtsbarkeit, Berlin 2016, in: Der STAAT 56 (2017), 666–671 (in German).

  • Book Review of Larry Barnett, Explaining Law. Macrosociological Theory and Empirical Evidence, Leiden, 2015, in: Zeitschrift für Rechtssoziologie 37 (2017), 381–389 (in German).

  • Constitutional Legitimacy and Constitutional Moments, in Prerequisits of Law (M. Abraham et. al., eds. Steiner Publishing 2016), ARSP-Beiheft 150, 131-141 (in German).
  • The European Court of Justice and Investor-State-Dispute-Settlement in TTIP and CETA: Between Confrontation, Constitutionalization and Restraint, in Free Trade vs. Democracy: Foundation of Transnational Legitimacy (S. Buszewski et. al., eds. Nomos 2016), 83-110 (in German).
  • Contesting the Notion of "The Last Word": Constitutional Courts as Guides 15-37, in The Last Word ‐ Lawmaking and Judicial Review in a Democracy (D. Elser eds. 2014) (in German).
  • Modus Operandi and the ICJ’s appraisal of the Lusaka Ceasefire Agreement in the Armed Activities case: The Role of Peace Agreements in International Conflict Resolution, 40 New York University Journal of International Law and Politics 107-169 (2008) (Special Issue).
  • The advance effects of EC-Directives against state-controlled companies, 13 Zeitschrift für Europäisches Privatrecht 88-104 (2005) (with F. Bühring - in German).



Lawmaking through Judicial Dialogue: How the CJEU and the German Constitutional Court Define the Legal Accountability of the ECB

  • Conference of the European University Institute and the University of Portsmouth on “Economic Constitutionalism: Mapping its Contours in European and Global Governance”, Florence

The End of Investment Protection in Europe? The Achmea-Judgment of the ECJ (in German)

  • Law after Lunch-Lecture Series of the Institute for Economic Law of the Martin Luther-University Halle-Wittenberg, Halle(Saale)

Exploring the Solange-approach: the effects of bottom-up constitutional change in the networked world order

  • ACTORE  Workshop of the Jean Monnet Centre of Excellence of the University of Antwerp on "Judicial Governance: The role of European and International Courts and their Interaction with other Actors", Antwerp

Comment on the Presentation of Professor Paul Kirchhof on Adjudication in European Integration (in German)

  • International Academie-Conference of the Hungarian Curia, the Hungarian Constitutional Court,  the Heidelberg Academy of Sciences and Humanities and the Ruprecht-Karls-University of Heidelberg Law School on “Adjudication within Judicial Dialogue on the domestic and the European level  based on the example of Hungary and Germany", Budapest

How to write a Ph.D. Thesis in Law. Some modest suggestions

  • Joint Ph.D.-Workshop of the Addis Ababa University and the Martin-Luther-University Halle-Wittenberg on “Investment, Human Rights and Environmental Protection in Ethiopia: Law, Policies and Practices”, Addis Ababa

Community Interests in WTO Law

  • 13th Annual Conference der European Society of International Law (ESIL) on "Global Public Goods, Global Commons and Fundamental Values: The Responses of International Law", Naples

Rights Considerations in the Legislative Process in Germany

  • ICON-S 2017 Conference on "Courts, Power, Public Law", Copenhagen

The Promise and Peril of Proportionality in National Security Policy

  • IPSA 24th World Congress of Political Science on "Politics in a World of Inequality", Poznan

Alternative Rights Protection: From judicial to non-judicial institutions

  • ICON-S 2016 Conference on "Borders, Otherness and Public Law", Berlin

The structure of proportionality analysis from a comparative perspective: Between judicial flexibility and guidance of policy-makers

  • ICON-S 2015 Conference on "Public Law in an Uncertain World", New York

Fundamental Rights and Proportionality in German Public Policy: Analyzing the Legislative Process of the Counter-Terrorism Database Act

  • IDI/ERC International Workshop on "Rights in the Policy Process", Madrid

Confrontation, Constitutionalization, Self-restraint: Competing approaches for the ECJ in dealing with investor-state dispute settlement (in German)

  • Conference of the Young science in public law on "Free Trade and Democracy", Berlin
  • Law after Lunch-Lecture Series of the Institute for Economic Law of the Martin Luther-University Halle-Wittenberg, Halle(Saale)

Constitutional Legitimacy and historic Transformation 

  • 22nd Annual Meeting of the Young Forum for Legal Philosophy, Hamburg
06/2014:   To refer or not to refer, that is the question: Explaining the shifting patterns in the preliminary reference procedure practices of constitutional courts in Europe
  • Inaugural Conference of ICON Society on "Rethinking the Boundaries of Public Law and Public Space", Florence

iCourts/PluriCourts Summer School, Copenhagen


Exploring the Solange-approach: The Dynamic of Constitutional Change in a New World Order

  • 4th International Young Researcher's Conference of the Cluster of Excellence "The Formation of Normative Orders" on Practices of Critique", Frankfurt/Main

Wider die Metapher vom letzten Wort: Verfassungsgerichte als Wegweiser

  • 53rd Annual Meeting of Young Scholars in Public Law, Bern

National Courts and Transnational Administrative Law (in German)

  • Annual Meeting of the Working Group for Comparative Constitutional Analysis across Jurisdictions, Kassel

Global Administrative Law in Domestic Courts

  • 4th Global Administrative Law Seminar, Viterbo

Human Rights, Global Administrative Law, and the Role of Domestic Courts

  • 4th Emerging Human Rights Scholarship Conference, NYU School of Law, New York