The Legal Basis for Using Principles in WTO Disputes

This article argues that the use of principles in WTO disputeresolution is both necessary and desirable. However, Panelsand the Appellate Body (WTO Tribunals) have often ignored principlesor not clearly identified the legal basis for their use. Thisarticle establishes a framework for the use of principles (inparticular principles of WTO law, principles of customary internationallaw, and general principles of law) in WTO dispute settlement.Broadly, WTO Tribunals can use principles drawn from these categoriesto interpret WTO provisions, based on Article 3.2 of the DSU,and Articles 31 and 32 of the VCLT. This follows most directlyfrom a teleological approach to interpretation, but principlesalso feature under subjective and textual approaches to interpretation.WTO Tribunals may also use certain principles in a non-interpretativemanner. Indeed, this may be necessary, particularly to addressprocedural issues. Precisely how a principle may be used dependson its type, content and status.