Historically shipping conference has enjoyed antitrust immunity in consideration of the importance of liner service in international trade in that it is essential to ensure stable movement of international freight. However, shipping deregulation which has been carried out for last decades in the US and EU has caused significant changes to the liner shipping market. In fact, most of shipping conferences have broken up or transformed as discussion agreement since shipping regulatory reform. However, on the other hands, it is also true that it has contributed to developmore efficient and responsive negotiating process that are better tailored to the needs of individual shippers.