UCL Faculty of Laws


Dr Martins Paparinskis

Reader in Public International Law

Faculty of Laws


Joined UCL
1st Sep 2013

Research summary

Martins is a generalist public international lawyer with a variety of specialist interests. He has published and spoken on foundational topics of public international law, such as sources of international law, law of treaties, State responsibility, international dispute settlement, and territorial title, as well as on topics in the subfields of international investment law, international human rights law, international environmental law, and international law of the sea. Martins has published with the American Journal of International Law, the British Year Book of International Law, the European Journal of International Law, and the Modern Law Review, for his monograph with Oxford Monograph Series in International Law, and is the author on State responsibility in the forthcoming 10th edition of Oppenheim: Peace. His writings are regularly and globally cited on issues of international law, most recently by:

  • courts of Colombia in Judgment C-252/19 of 6 June 2019 of the Colombian Constitutional Court; 
  • courts of Singapore in BBA and Ors v BAZ [2020] 2 SLR 453 of the Singapore Court of Appeal;
  • States in mixed dispute settlement (as a disputing party) in Interocean Development Company and Interocean Oil Exploration Company v Nigeria, ICSID Case no ARB/13/20, Award, 6 October 2020;
  • courts of Latvia in Judgments in Cases no SKA-0532-21 and SKA-0537-021 of 8 February 2021 of the Supreme Court's Senate; 
  • courts of India in Bharat Sanchar Nigam Ltd & Anr v. M/S Nortel Networks India Pvt Ltd Judgment of 10 March 2021 of the Indian Supreme Court;
  • States in inter-State dispute settlement in Armed Activities on the Territory of the Congo (DRC v Uganda) (Reparations owed by Parties), ICJ, CR 2021/12 (30 April 2021);
  • Institut de Droit International in S Murase, 'Epidemics and International Law' (2021);
  • investor-State PCA tribunals in OOO Manolium-Processing v Belarus, PCA Case no 2018-06, Final Award, 22 June 2021;
  • States in mixed dispute settlement (a party other than a disputing party) in Alicia Grace and Ors v Colombia, ICSID Case no UNCT/18/4, Submission of the United States, 24 August 2021; Submission of Canada, 24 August 2021;
  • investor-State ICSID tribunals in Lion Mexico Consolidated v Mexico, ICSID Case no ARB(AF)/15/2, Award, 20 September 2021.

Teaching summary


Public International Law (LAWS0027)


International Arbitration (LAWS0256): Co-convenor

International and Global Environmental Law (LAWS0274)

International Human Rights Law (LAWS0232)

International Law of Foreign Investment (LAWS0239): Convenor

Law and Policy of International Courts and Tribunals (LAWS0235): Convenor


University of Oxford
Doctorate, Doctor of Philosophy | 2010
University of Oxford
Other higher degree, Master of Philosophy | 2006
University of Oxford
Other higher degree, Master of Laws | 2005
Latvia State University
First Degree, Bachelor of Laws | 2004


Martins Paparinskis joined UCL Faculty of Laws in 2013. Prior to this, he was a Junior Research Fellow at Merton College Oxford and a Hauser Research Scholar at the New York University. He took an LL.B. from the University of Latvia, before coming to the UK to take his M.Jur. (Dist, Clifford Chance Prize), M.Phil (Dist), and D.Phil. from the University of Oxford. He is a Member of the PhD Scientific Board of the Doctoral College of the University of Milan-Bicocca, and has held visiting positions at the National University of Singapore and the University of Bologna. In 2016, he received UCL Laws Excellence Award for Legal Teaching (EXALT): Graduate. 

Martins' research interests are reflected in his appointments. He is a member of the Council of Independent Experts in International and European Law with the Minister of Foreign Affairs of Latvia (since 2012), and was the lead drafter of its opinion that formed the basis for Latvia's 2019 declaration recognizing the jurisdiction of the International Court of Justice as compulsory. In the field of international dispute settlement, Martins is a member of the Permanent Court of Arbitration (since 2017) and a conciliator of the OSCE Court of Conciliation and Arbitration (since 2019). In the field of international investment law, he is a member of the ICSID Panels of Arbitrators (since 2014, re-designated 2020) and of Conciliators (since 2020). In the field of human rights law, Martins is a member of the management board the EU Fundamental Rights Agency (since 2017) and an expert eligible to serve on the Advisory Committee on the Framework Convention for the Protection of National Minorities (since 2019). In the field of international environmental law, he is a member of the implementation committee of the UNECE Water Convention (since 2018). Martins has been co-nominated by Latvia, Estonia, and Lithuania for election to the International Law Commission in 2021.

Martins is the Book Review Editor of the Journal of World Investment and Trade, a co-editor of Current Legal Problems, and a member of the Academic Review Board of the Cambridge Journal of International Law, the Editorial Board of the Journal of the University of Latvia. Law, the Advisory Board of the UCL Journal of Law and Jurisprudence, the Editorial Advisory Board of Investment Claims, and UCL Press executive group (editorial board). He is a member of the Academic Forum on ISDS, the Academic Council of the Institute for Transnational Arbitration, and the International Law Association’s Committee on Rule of Law and International Investment Law. Martins has been a member of the Association's Committee on Non-State Actors and Study Group on the Use of Domestic Law Principles for the Development of International Law.