Masato Hayakawa

Ranked in 2 Practice Areas

Band 2

Intellectual Property: International

Japan

6 Years Ranked

Band 4

Life Sciences

Japan

1 Years Ranked

Ranked in Guides

Global 2025

About

Provided by Masato Hayakawa

Asia-Pacific

Practice Areas

Masato’s practice is concentrated on transactions and counselling involving intellectual property, including structuring and negotiating license agreements, technology transfers, adversarial patent litigation settlements, outsourcing arrangements, joint development agreements, and other intellectual property matters relevant to technology companies. Masato is also very experienced in the intellectual property aspects of mergers and acquisitions. He advises clients, including both emerging and established companies, from a wide range of industries. For example, Masato has counselled companies in the pharmaceutical and medical device industries, semiconductor technology companies, financial institutions, and multinational technology conglomerates. He has extensive experience in cross-border transactions, having worked on major transactions in the United States, Asia, and Europe.

Career

Masato is admitted to practice in California and is qualified in Japan (Gaikokuho-Jimu-Bengoshi).

Chambers Review

Provided by Chambers

Chambers Asia & Pacific

Intellectual Property: International - Japan

Band 2

Individual Editorial

Masato Hayakawa has notable experience handling licence agreements related to commercialisation and development on a global scale. His practice spans a range of sectors, representing clients from the technology and pharmaceutical industries, among others.

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Life Sciences - Japan

Band 4

Individual Editorial

Masato Hayakawa has a notable life sciences practice with an impressive client roster of pharmaceutical and medical device companies. He demonstrates his technical prowess in various licensing, distribution and collaboration agreements, as well as contractual disputes arising from them.

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Strengths

Provided by Chambers

Masato Hayakawa is able to understand our problems very quickly, give a comprehensive analysis and help us make the right judgment. He's also very friendly; no matter the problem, it can be discussed.

Intellectual Property: International respondent
Chambers Asia & Pacific

He has a specialised knowledge in IT and pharmaceuticals. I have peace of mind leaving everything to him. He has a deep understanding of the language and Japanese companies.

Life Sciences respondent
Chambers Asia & Pacific

He is an excellent lawyer who can provide the latest knowledge on the advancement of AI and the use of intellectual property rights in the life sciences field.

Life Sciences respondent
Chambers Asia & Pacific

Intellectual Property: International respondent
Chambers Asia & Pacific

He has a specialised knowledge in IT and pharmaceuticals. I have peace of mind leaving everything to him. He has a deep understanding of the language and Japanese companies.

Life Sciences respondent
Chambers Asia & Pacific

He is an excellent lawyer who can provide the latest knowledge on the advancement of AI and the use of intellectual property rights in the life sciences field.

Life Sciences respondent
Chambers Asia & Pacific

Filter by

Japan

Banking & Finance: Domestic

Keiko Yamazaki

Band 2

Masato Hayakawa

Asia-Pacific Guide 2026

Intellectual Property: International + 1 more ranking

About

Practice Areas

Career

Chambers Review

Chambers Asia & Pacific

Intellectual Property: International - Japan

Individual Editorial

Life Sciences - Japan

Individual Editorial

Strengths

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Japan

Intellectual Property: International

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