Robert D. Anderson, Counsellor and Team Leader for Government Procurement and Competition Policy, Intellectual Property, Government Procurement and Competition Policy Division (IPD), WTO Secretariat; Honorary Professor, School of Law, University of Nottingham; and External Faculty Member (part-time), World Trade Institute, University of Bern; Philippe Pelletier, Legal Affairs Officer, IPD, WTO Secretariat. Helpful discussions with and/or comments received from Jean Heilman Grier, Anna Caroline Müller and Christopher Yukins are gratefully acknowledged. The views expressed are the authors' and should not be attributed to the WTO or its Secretariat. E-mail addresses for correspondence: robert.anderson@wto.org and philippe.pelletier@wto.org. DOI: 10.21552/epppl/2016/4/6