There are a number of points throughout the trade mark system where multiple undertakings share the same name, either unwillingly, or by consent. In this timely book, expert contributors address this controversial issue and identify the various points at which names are shared. This unique book uses both historical and interdisciplinary perspectives, as well as more traditional legal methodology, to examine the practical and theoretical implications of such name sharing for the parties involved. It analyses what can be learned from the sharing process about the nature of the trade mark system and the interests which it protects. General themes relating to the nature and purpose of trade mark law are also discussed.