MEJÍA-LEMOS Diego Germán

Post-Doctoral Fellow

Ph.D., LL.M. (NUS), LL.M. (NYU), PGDip, LL.B. (UNAL), Abogado (Colombia)

Email Address:
Office Tel: (65) 6601-6154 
Office Fax: (65) 6779-0979 
Office Address

Faculty of Law, National University of Singapore
Eu Tong Sen Building
469G Bukit Timah Road
Singapore 259776
Research Interests

International Law
Dispute Resolution

Subjects Taught


Brief Biodata

Dr Mejía-Lemos has held positions in both academia and practice. Recently, at the International Bureau of the Permanent Court of Arbitration, in The Hague, he provided support to investment treaty arbitrations conducted under the PCA's auspices. While based in Paris, he participated in Freshfields Bruckhaus Deringer's advice and representation of a state in a maritime boundary dispute before the International Court of Justice. Previously, in Colombia, he had served as Assistant Professor of Law and Principal Researcher at the Universidad de Bogotá, appeared as amicus curiae before the Constitutional Court and clerked at the Supreme Administrative Court (Consejo de Estado). He has been awarded several scholarships and grants, including the President's Graduate Fellowship (NUS) and the Mallal Scholarship (NYU). He has acted as peer reviewer for the Asian Journal of International Law and others. He is fluent in English and Spanish and proficient in French.

Representative Publications

1. "Charter of the Association of Southeast Asian Nations," Oxford Reports on International Organizations (Oxford University Press, 2017) (forthcoming).

2. "Agreement on the Establishment of the ASEAN Secretariat," Oxford Reports on International Organizations (Oxford University Press, 2017) (forthcoming).

3. "Some Considerations Regarding "’Instant’ International Customary Law, Fifty Years After," 55 Indian Journal of International Law 85 (2015)

4. "Opinión Consultiva Nº 01/2008," Oxford Reports on International Law, Reports on International Trade Law Decisions (Oxford University Press, 2015)

5. "On Self-Reflectivity, Performativity and Conditions for Existence of Sources of Law in International Law," 57 German Yearbook of International Law 289 (2014)

6. "Venezuela’s Denunciation of the American Convention on Human Rights," 17 American Society of International Law (ASIL) Insights (2013)

Publication List