Dr Dorota Leczykiewicz is Associate Professor of Law and an Official Fellow of St Peter's College. She was previously a Junior Research Fellow and then a Fellow by Special Election at Trinity College, Oxford, a Leverhulme Trust Early Career Fellow in the Oxford Faculty of Law, and a Marie Curie Fellow at the European University Institute in Florence. Her research interests focus on legal reasoning, European and comparative private law and EU constitutional law. She holds a DPhil from the University of Oxford in comparative judicial reasoning in Tort law. Her publications include articles on the EU law of remedies, European private law and EU fundamental rights. Together with Professor Stephen Weatherill she edited two collections of papers -The Involvement of EU Law in Private Law Relationships (Hart Publishing 2013) and The Images of the Consumer in EU Law: Legislation, Free Movement and Competition Law (Hart Publishing, forthcoming). She has recently authored chapters on direct effect, effective judicial protection and Member State liability for The Oxford Handbook of European Union Law and on human rights in the area of freedom, security and justice for a book The EU as an Area of Freedom, Security and Justice. Her current work concerns questions of regulatory cost, distributive justice and freedom of contract in EU private law. At St Peter's College she teaches tutorials in EU law, Tort law and Roman law.


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  • D Leczykiewicz, 'Effectiveness of EU Law Before National Courts: Direct Effect, Effective Judicial Protection, and State Liability' in A Arnull and D Chalmers (eds), Oxford Handbook of European Union Law (Oxford University Press 2015)
  • D Leczykiewicz, ''Constitutional Justice' and Judicial Review of EU Legislative Acts' in G de Búrca, D Kochenov and A Williams (eds), Europe’s Justice Deficit? Beyond Good Governance (Hart Publishing Oxford 2014)
  • D Leczykiewicz, 'Conceptualising Conflict between the Economic and the Social in EU Law after Viking and Laval' in M Freedland and J Prassl (eds), Viking, Laval and Beyond (Hart Publishing Oxford 2014)
  • D Leczykiewicz, 'Horizontal Application of the Charter of Fundamental Rights' (2013) 38 European Law Review 479
    ISBN: 0307-5400
  • D Leczykiewicz, 'Enforcement or Compensation? Damages Actions in EU Law after the Draft Common Frame of Reference' in M Kenny and J Devenney (eds), The Transformation of European Private Law (Cambridge University Press 2013)
  • D Leczykiewicz, 'Horizontal Effect of Fundamental Rights: In Search of Social Justice or Private Autonomy in EU Law?' in U Bernitz and X Groussot (eds), General Principles of EU Law and European Private Law (Kluwer 2013)
  • D Leczykiewicz, 'Melloni and the future of constitutional conflict in the EU' (2013) UK Constitutional Law Blog, 22 May 2013, reposted on the EUtopia Law Blog, 23 May 2013
  • D Leczykiewicz, 'The Constitutional Dimension of Private Law Liability Rules in the EU' in D Leczykiewicz and S Weatherill (eds), The Involvement of EU Law in Private Law Relationships (Hart Publishing Oxford 2013)
  • D Leczykiewicz and Stephen Weatherill (eds), The Involvement of EU Law in Private Law Relationships (Hart Publishing Oxford 2013)
  • D Leczykiewicz, ''Where Angels Fear to Tread': The EU Law of Remedies and Codification of European Private Law' (2012) 8 European Review of Contract Law 47-81
    ISBN: 1614-9939
  • D Leczykiewicz, 'Lucinda Miller, The Emergence of EU Contract Law. Exploring Europeanization' (2012) 49 Common Market Law Review 305 [Review]
  • D Leczykiewicz, 'The Charter of Fundamental Rights and Member States’ Derogations from Internal Market Obligations' in PM Huber (ed), The EU and National Constitutional Law (Boorberg Stuttgart 2012)
  • D Leczykiewicz, 'The ‘national identity clause’ in the EU Treaty: a blow to supremacy of Union law?' (2012) UK Constitutional Law Blog, 21 June 2012
  • D Leczykiewicz, 'The EU Charter of Fundamental Rights and its effects' (2011) UK Constitutional Law Blog, 4 August 2011
  • D Leczykiewicz, '"Effective Judicial Protection" of Human Rights After Lisbon: Should National Courts Be Empowered to Review EU Secondary Law?' (2010) 35 European Law Review 326
    ISBN: 0307-5400
  • D Leczykiewicz, 'La conformité au principe de protection des droits de l’homme comme condition de la primauté des actes européens dans le troisième pilier' in A Frąckowiak-Adamska and R Grzeszczak (eds), L’espace judiciaire européen (Willy Brandt Zentrum 2010)
  • D Leczykiewicz, 'Wykładnia prounijna w prawie podatkowym a obowiązek poszanowania Konstytucji RP na przykładzie wybranych orzeczeń NSA' in S Biernat and S Dudzik (eds), Doświadczenia prawne pierwszych lat członkostwa Polski w Unii Europejskiej (Kluwer International Warsaw 2010)
  • D Leczykiewicz, 'Commentary on Article 281 EC (legal personality of the European Community)' in A Wróbel (ed), Komentarz. Traktat ustanawiający Wspólnotę Europejską. Volume III (Kluwer International Warsaw 2009)
  • D Leczykiewicz, 'Obywatelstwo UE i prawo do swobodnego przemieszczania sie jako instrumenty ograniczania autonomii regulacyjnej panstw członkowskich' in S Biernat and S Dudzik (eds), Przepływ osób i świadczenie usług w Unii Europejskiej (Kluwer International Warsaw 2009)
  • D Leczykiewicz, 'Private Party Liability in EU Law: In Search of the General Regime' (2009) 12 Cambridge Yearbook of European Legal Studies 257
    ISBN: 1528-8870
  • D Leczykiewicz, 'Why do the European Court of Justice judges need legal concepts?' (2008) 14 European Law Journal 773-786
    ISBN: 1468-0386
  • D Leczykiewicz, 'Constitutional Conflicts and the Third Pillar' (2008) 33 European Law Review 230
  • D Leczykiewicz, 'Pleural plaques, the concept of damage and liability for psychiatric injury' (2008) 124 Law Quarterly Review 548 [Case Note]
  • D Leczykiewicz, 'Elspeth Guild (ed.), Constitutional Challenges to the European Arrest Warrant' (2007) 44 Common Market Law Review 840 [Review]
  • D Leczykiewicz, 'Polish Constitutional Tribunal, Judgment of 27 April 2005, No. P 1/05, on the constitutionality of the European Arrest Warrant national implementation' (2006) 43 Common Market Law Review 1181 [Case Note]
  • D Leczykiewicz, 'Common Commercial Policy: the Expanding Competence of the European Union in the Area of International Trade' (2005) 6 German Law Journal 1673-1686


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Research Interests

EU law, European and comparative private law, Tort law, Legal reasoning

Research projects