This book provides comprehensive, in depth analysis of the different sets of rules of origin adopted by major trading partners, namely EU, US, China and Japan and all trading regions - Asia, Africa and Latin America. It discusses the current status of non-preferential as well as preferential rules of origin in international trade, their evolution over last decades and tendencies for the future. With its multidisciplinary approach, the book's contents provide legal and economic comparative analysis of different sets of rules origin, reviewing their drafting differences and their implications and impact on industrial and investment environments. Drawing from the thirty years' experience of the Author, the book provides insights from trade negotiations along with practical tools for policy makers and practitioners, orientation for the private sector and analytical tools for researchers. A new methodology to draft product specific rules of origin based on an input-output table elaborated by the Author is a distinctive feature of this new edition as well as a new chapter dealing with administrative aspects of rules of origin.