Kono, Toshiyuki Keywords: Private international law | Conflict of laws | Choice of law | Law and economics | Unification of law | Effectiveness | Intellectual property | International insolvency law | Mots clefs: ABSTRACT As mentioned in the course, “efficiency is a corollary normative criterion which lies at the heart of law and economics approach.” The efficiency criterion is put into the context of conflict resolution, with a traditional approach including the choice of law revolution which took place in the twentieth century.…