Otani specialises in patent disputes and IP strategy counselling for technology-oriented start-up and small medium businesses. He handles patent dispute cases including domestic and multi-national litigations and licence negotiations in wide range of technical fields including electronics, communication, software, optics, medical devices and, standard essential patents (SEPs). When advising a start-up, he provides comprehensive advice covering patent, design, trade mark and copyright depending on the nature of the client’s business.