About Kenji Tosaki

Kenji Tosaki is a partner at Nagashima Ohno & Tsunematsu. He specialises in intellectual property (IP) litigation, and handles both IP infringement litigation and IP invalidation litigation before the IP High Court, the Supreme Court, District Courts and the Japan Patent Office. His IP expertise includes a wide variety of IP matters in many areas, such as telecommunications, electronics, social games and pharmaceuticals. He also provides pre-litigation counselling, including infringement/invalidity analysis.