Nagashima Ohno & Tsunematsu

Nagashima Ohno & Tsunematsu’s team handles both contentious and non-contentious matters. Its expertise spans IP litigation, due diligence, licensing, and research and development-related agreements. The group is also active in advanced tech and TMT-related issues, including cases involving AI, big data, standard essential patents, and 5G. The practice is headed up by 'leader in the field' Shunji Matsuda who has worked closely with Japanese government bodies and public sector agencies on the breadth of IP matters. Another key figure is Keiji Tonomura who advises domestic and international clients on IP and IT transactions, particularly in relation to data security and privacy. Tonomura’s work often focuses on the TMT sector and emerging tech-driven industries, such as the sharing economy, fintech, IoT and AI.