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Chambers Global Practice Guides - Trade Secrets 2021 (Japan Chapter)

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Chambers Global Practice Guides - Trade Secrets 2021 (Japan Chapter)

Madoka Shimada, Toshihiko Hamano and Nobuhiro Tanaka co-authored the Japan chapter of Chambers Global Practice Guides - Trade Secrets 2021,  published by Chambers and Partners, London, UK.


島田 まどか

Madoka advises clients on various matters of competition law, including domestic and international cartels, bid-rigging, M&A transactions, investigations by the JFTC, leniency applications and general antitrust law compliance. She is especially active in cross-border transactions. She has represented clients in connection with investigations into various global cartels, involving air cargo, marine hoses, TFT-LCDs, airlines, and bearings, and also in various merger-control cases, including a vertical integration between semiconductor equipment manufacturers, and major global merger transactions in the chemical and pharmaceutical industries. She has particular strength and experience handling IT-industry mega deals. Madoka is also active in advising in the international trade area, in particular, government procurement and export control. In addition, she advises on laws preventing unfair competition, including trade secret cases. She served as lead counsel to Nippon Steel Corporation in multinational trade secret litigation against POSCO (a South Korean steel company), a landmark case in this area, and successfully negotiated a favorable settlement for her client. She was a member of the Subcommittee on Unfair Trade Policies and Measures of the Industrial Structure Council at the Ministry of Economy, Trade and Industry from 2013 to 2023.

田中 伸拡

Nobu Tanaka is a partner in our Antitrust and International Trade practice team dealing with merger control, cartel/bid rigging, monopoly, unfair trade practice and dispute related cases. Nobu has much experience in dealing with cross-border merger control, international cartels and cross-border litigation cases. Through his 3 years experience in the U.S., Nobu has a deep understanding of the legal, business and cultural difference between Japan and other countries and he has expertise in explaining Japanese laws in a plain manner. Nobu always tries to understand clients’ interest and clients’ businesses deeply so that he can provide better and flexible solution. Nobu has good reputation in deep understanding of industries and business. In addition to antitrust cases, Nobu also handles various non-antitrust matters, such as cross-border commercial litigation, internal investigation, white-collar matters and cross-borer corporate transaction and general corporate matters including advice relating to new business in Japan. He also has a good reputation in timely and efficient communication. Nobu has LL.M degree at Stanford Law School (2017) and J.D. degree at University of Tokyo School of Law (magna cum laude). Nobu is fluent in English.

濱野 敏彦

He graduated from the University of Tokyo Graduate School of Frontier Sciences (M.S.) in 2004. Due to his technical background, he advises clients on various technology matters, including artificial intelligence (AI), data protection, medical field, healthcare, software, system, cloud computing, information technology, and DX. He has deep knowledge of artificial intelligence because he studied neural networks, which is the main technology of artificial intelligence, in an academic lab for three years. He successfully passed the Japanese patent attorney examination in 2002, and he has been admitted in Japan since 2009. Therefore, he advises clients on various intellectual property law matters due to his technical background and knowledge as a Japanese patent attorney. Regarding dispute matters of intellectual property, he has handled patent litigation, litigation regarding employee inventions, trade secret litigation and so on. Especially, he has considerable experience in trade secret disputes, and he provides a support service on countermeasures against divulging trade secrets, including drafting company regulations, data management practice, and employee training.He graduated from the University of Tokyo (Graduate School of Frontier Sciences) with an M.S. in 2004, passed the Japanese patent agent examination in 2002, and has been admitted to practice law in Japan since 2009. He regularly draws on his technical background and expertise to advise clients on various technology matters, including AI (particularly generative AI), data protection, med-tech, healthcare, software, systems, cloud computing, information technology, DX, and quantum computing. He has a deep understanding of artificial intelligence due to his research on neural networks, and uses his experience as a Japanese patent attorney to advise clients on a wide range of legal matters. He also handles litigation involving patents, employee inventions, trade secrets and other tech and intellectual property issues, and has considerable experience with trade secrets disputes and supporting clients with the establishment and implementation of countermeasures to protect trade secrets, including drafting company regulations, designing data management practices, and conducting employee training.