Tech/Data/IT/Telecom

Data Protection/Data Breach

It is now a common understanding in business that the active use of personal data by each company, such as the analysis and utilization of customer data using AI and global human resource management, is extremely important for corporate activities. On the other hand, as global awareness of privacy has reached an unprecedented level, data protection regulations in Japan and other countries have expanded dramatically, and the content of these regulations is becoming increasingly complex and strict. In order for companies to survive in this business environment, it is essential that they understand Japan’s Act on the Protection of Personal Information and other data protection laws, and to respond to the latest amendments in a timely manner. As a pioneer of truly international law firms in Japan, we provide legal services based on our extensive knowledge and abundant experience in personal information protection and data protection cases in Japan. These services include providing legal advice on transactions involving personal information, establishing privacy policies and personal information protection regulations, responding to legal amendments, and responding to cybersecurity incidents such as data breaches. Furthermore, taking advantage of our overseas offices and the global network with overseas law firms that we have built up over the years, we regularly provide a large amount of legal advice on compliance with data protection regulations in Europe, the United States, China, Southeast Asian countries, India, Brazil, Latin America, the Middle East, African countries and so on.

INSIGHTS

PROFESSIONALS

Akihito ("Aki") Nakamachi
Akihito ("Aki")Nakamachi
Tokyo
Partner
Tokyo

Partner

Contact
Mr. Nakamachi is a fully bilingual and bicultural attorney and possesses over 30 years of solid experience as a practicing lawyer in the United States and Japan. He has the rare distinction among Japanese lawyers of having served as a partner at top-tier law firms in both of the two countries. He has special expertise in intellectual property/technology transactions for technology-driven clients, ranging from young start-ups to fully-matured global enterprises. Aki represents clients operating in a wide range of industries, including software, Internet, e-commerce, computer gaming, computer equipment, telecommunications, automobile, semiconductor, pharmaceuticals, biotech and medical devices. With over 10 years of work experience at first-tier national U.S. law firms across the United States, Aki has acquired exceptionally deep and practical knowledge of not only the laws but also the "business culture" of both the United States and Japan, and utilizes his expertise to assist clients in achieving successful outcomes in cross-border commercial transactions and dispute resolution matters.
Yuta Oishi
YutaOishi
Tokyo
Partner
Tokyo

Partner

Contact
Yuta Oishi has engaged in a wide range of IP related matters, including patent, copyright, and trademark infringement lawsuits, licensing negotiations, as well as technology related projects. Moreover, He specializes in data related business and has provided an extensive variety of advice regarding data protection, cyber security, and trade secrets. In addition, he possesses a vast array of experience in assisting with transactional, regulatory, and other legal matters in fields that pertain to and expand across the pharmaceutical, healthcare (including digital healthcare), IT, and entertainment industries.
Takashi Nakazaki
TakashiNakazaki
Tokyo
Partner
Tokyo

Partner

Contact
My practice focuses on assisting domestic and international clients with personal data and privacy, AI, metaverse and other advanced areas, internet and IT-related matters, copyright, trademarks and other intellectual property rights, and cross-border transactions. For domestic clients, I have also assisted many clients with overseas compliance in the EU and elsewhere. I also deal with a number of more specialised areas, such as cyber security, where ransomware has recently become an issue, economic security, where security clearances are a hot topic, and technical areas such as Radio Act and satellite-related matters. Outside of work, I was a member of a working group that drafted the recently published AI Guidelines for Business, and I serve on a number of expert committees for the Ministry of Economy, Trade and Industry, the Ministry of Internal Affairs and Communications, the Cabinet Office and other government departments. Also I have been commissioned to carry out various surveys for the Personal Information Protection Commission. In Internet-related matters, I have been involved in various service launches and overseas expansion support for SNS, cloud, metaverse and online games, domain disputes and security, as well as compliance with the Personal Information Protection Act, the Funds Settlement Act, the Provider Liability Limitation Act, the Telecommunications Business Act and various other business laws and regulations, and in IT and systems, I have been involved in system development, security and open source software development. The firm assists clients in Japan and abroad with a focus on system development, security and software disputes, including open source.
Mariko Nagata
MarikoNagata
Singapore
Tokyo
Partner
Singapore
/
Tokyo

Partner

Contact
Mariko Nagata is a partner handling a wide range of corporate and finance matters with a focus on cross-border transactions.
Aparat Sanpibul
AparatSanpibul
Bangkok
Partner
Bangkok

Partner

Contact
Aparat Sanpibul is a partner at Anderson Mori & Tomotsune with extensive legal experience in Thailand and the Lao PDR. Her practice focuses on banking and finance, real estate, mergers and acquisitions, personal data protection, intellectual property, and Lao law.
Tomoki Debari
TomokiDebari
Tokyo
Partner
Tokyo

Partner

Contact
Since joining the firm in 2001, Tomoki Debari has been involved principally in the fields of insurance, banking, securities and asset management, as well as M&A projects involving insurance companies and other financial institutions. He has extensive experience representing Japanese and foreign insurance companies in various matters in Japan, including: (a) formation of branches, subsidiaries and insurance joint venture companies in Japan and applications for insurance business licenses; (b) acquisition of shares in insurance companies and/or portfolio transfers; (c) demutualization and other structural changes, including conversion of Japanese branches into subsidiaries licensed to conduct insurance business; (d) strategic alliances and mergers involving insurance companies; (e) outbound investment and/or formation of joint ventures in the U.S., Europe and Asia (including Vietnam, Turkey, Thailand and Singapore) by Japanese insurers; (f) development of new life and non-life product lines; (g) asset management (including real estate, funds and various derivative transactions); (h) reinsurance transactions and ancillary hedging transactions; (i) ongoing advice on all major issues relating to the Insurance Business Act and Insurance Contract Act; (j) litigation and alternative dispute resolution (including disputes relating to reinsurance); and (k) FSA inspections. As an additional area of specialization, Mr. Debari has also developed extensive expertise in environmental law matters. He assisted Japan's Environmental Ministry in its development of the Soil Contamination Countermeasures Act of Japan, adopted in 2002, and since then has advised clients on a wide variety of environmental issues, including: (i) development of environment impairment liability policies and environment remediation expense policies for several insurance companies; (ii) numerous real estate projects in which analysis and management of environmental risks played a key role, including sales, transfers, securitizations and M&A transactions; (iii) global studies by clients in the areas of soil, groundwater, and air contamination (including one such study for a major U.S. airline); (iv) development by clients of emergency reaction and contingency plans against soil and groundwater contamination; and (v) dispute resolution (including both litigation and alternative mechanisms) regarding environmental issues between joint venture partners, as well as with local governments and the public.
Masayuki Yamanouchi
MasayukiYamanouchi
Tokyo
Partner
Tokyo

Partner

Contact
Masayuki holds a master's degree in science, and has been engaged in a number of patent infringement lawsuits and other IP related matters since he became a lawyer. His main focus is on the pharmaceutical industry, in patent infringement actions as well as licensing negotiations, joint development projects, and technology transfer projects. He also has expertise and experience in other forms of intellectual property, including trademarks, copyrights, and trade secrets. In addition, with his experience in the U.S. (both in law school and at a law firm focusing on patent matters), he also provides advice to clients involved in patent lawsuits in the U.S.
Junichi Kondo
JunichiKondo
Tokyo
Partner
Tokyo

Partner

Contact
Junichi Kondo is a partner at Anderson Mori & Tomotsune and is engaged principally in the fields of general corporate matters with an emphasis on M&A, joint venture and other corporate transactions including M&A-related financing. His scope of experience also includes healthcare matters including pharmaceutical regulations and software licensing.
Shinji Kusakabe
ShinjiKusakabe
Tokyo
Partner
Tokyo

Partner

Contact
Shinji Kusakabe specializes in advising on legal issues in manufacturing, such as commercial transactions and product liabilities. Mr. Kusakabe has a wealth of practical experience in litigation and arbitration, both international and domestic. Mr. Kusakabe's particular specialties lie in providing targeted advice to clients on corporate matters, taking into consideration potential future disputes, and in resolving current disputes in light of actual business practices and circumstances. Cases which Mr. Kusakabe has recently handled include lawsuits related to termination of commercial relationships, illegal transactions conducted by employees, product liability, bid-rigging conspiracies and inventions by employees. Mr. Kusakabe is also actively engaged in international arbitration, including matters arbitrated outside Japan. In addition to his professional experience at Anderson Mori & Tomotsune, Mr. Kusakabe's prior experience includes working as a Foreign Associate at Kelley Drye & Warren's New York office (September 1999 to August 2000) and a full-time secondment to Swiss Bank Corporation's (now UBS AG) Tokyo Legal & Compliance department (February to July 1998). Mr. Kusakabe also served as: Executive Director, the Headquarters for Comprehensive Promotion of Civil Justice Reform of the Japan Federation of Bar Associations (from June 2026); Member of the Advisory Committee for the Establishment of Civil Rules of the Supreme Court (from August 2025); Special Assistant to the President of the Japan Federation of Bar Associations (from April 2025 to September 2025); President of the Daini Tokyo Bar Association (from April 2024 to March 2025); Vice President of the Japan Federation of Bar Associations (from April 2024 to March 2025); Expert Member of the Nuclear Damage Compensation Dispute Review Board (from June 2022 to June 2023); Member of the Code of Civil Procedure (for Introduction of IT) Subcommittee of the Legislative Council of the Ministry of Justice (from June 2020 to February 2022); Governor of the Japan Federation of Bar Associations (from April 2020 to March 2021; Executive Governor from June 2020 to March 2021); Chair of the Committee on Civil Procedure of the Japan Federation of Bar Associations (from June 2019 to May 2021); Examiner for the National Bar Examination and the National Preliminary Bar Examination (in Charge of the Code of Civil Procedure) (from November 2018 to November 2021); Vice President of the Daini Tokyo Bar Association (from April 2017 to March 2018); and Practicing-Attorney-Professor for Civil Advocacy at the Legal Training and Research Institute of the Supreme Court of Japan (from April 2010 to March 2013) (for details of this position, please visit http://www.courts.go.jp/english/institute_01/institute/index.html#Intro ).
Atsutoshi Maeda
AtsutoshiMaeda
London
Tokyo
Partner
London
/
Tokyo

Partner

Contact
Atsutoshi Maeda is a partner at Anderson Mori & Tomotsune who has been engaged in an extensive range of legal matters. In particular, he has provided general corporate advice on issues regarding various commercial laws, employment laws and compliance problems, as well as negotiated contracts in a broad range of industries and tackled disputes for domestic and overseas clients. Given the unique nature of Japanese business culture and legal and contract frameworks that are distinct from western practices, Mr. Maeda always clarifies what non-Japanese clients can expect and should not expect from contract negotiation, semi-contentious discussions, employment issues and/or with the handling of transactions. As such, for international clients, he always aims to demystify Japanese law and local market practice.

Related Newsletters

PUBLICATIONS

Click here to share this page