Zen Tatsumura
About Zen Tatsumura
Zen Tatsumura is a lawyer based in Tokyo, JP and has been recognized in The Best Lawyers in Japan™ since 2009. Zen Tatsumura is recognized in the following practice areas:
- Tokyo, Japan
- Intellectual Property Law
- Media and Entertainment Law
Current Firm: Tatsumura Law Office
Location: Tokyo, JP
Nearby Lawyers
Wataru Kamihigashi is a top attorney recognized by Best Lawyers in the practice area(s) of International Business Transactions. Wataru, who practices law in Tokyo, Japan, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Wataru is held by other top lawyers in the same geographic and legal practice area.
Hayato Kimura is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Hayato, who practices law in Tokyo, Japan, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hayato is held by other top lawyers in the same geographic and legal practice area.
Michiaki Hosoi is a top attorney recognized by Best Lawyers in the practice area(s) of Structured Finance Law. Michiaki, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michiaki is held by other top lawyers in the same geographic and legal practice area.
Yumiko Aoi is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Mergers and Acquisitions Law. Yumiko, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Yumiko is held by other top lawyers in the same geographic and legal practice area.
Tsuyoshi Imai is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Mergers and Acquisitions Law and Private Equity, Private Funds and Venture Capital Law. Tsuyoshi, who practices law in Tokyo, Japan, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tsuyoshi is held by other top lawyers in the same geographic and legal practice area.
Yuka Teraguchi is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Yuka, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Yuka is held by other top lawyers in the same geographic and legal practice area.
Hidetomo Futami is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Mergers and Acquisitions Law. Hidetomo, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hidetomo is held by other top lawyers in the same geographic and legal practice area.
Ayako Kawano is a top attorney recognized by Best Lawyers in the practice area(s) of Hospitality and Tourism Law, Insolvency and Reorganization Law and Real Estate Law. Ayako, who practices law in Tokyo, Japan, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ayako is held by other top lawyers in the same geographic and legal practice area.
Hiroo Atsumi is a top attorney recognized by Best Lawyers in the practice area(s) of Asset Finance Law, Banking and Finance Law, Capital Markets Law, Project Finance and Development Practice, Real Estate Law and Structured Finance Law. Hiroo, who practices law in Tokyo, Japan, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hiroo is held by other top lawyers in the same geographic and legal practice area.
Kazuya Sato is a top attorney recognized by Best Lawyers in the practice area(s) of Structured Finance Law. Kazuya, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kazuya is held by other top lawyers in the same geographic and legal practice area.
Explore and Learn
2026 Best Lawyers Awards: Recognizing Legal Talent Across the United States
by Jamilla Tabbara
The 2026 editions highlight the top 5% of U.S. attorneys, showcase emerging practice areas and reveal trends shaping the nation’s legal profession.
Gun Rights for Convicted Felons? The DOJ Says It's Time.
by Bryan Driscoll
It's more than an administrative reopening of a long-dormant issue; it's a test of how the law reconciles the right to bear arms with protecting the public.
2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence
by Jamilla Tabbara
Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.
How to Sue for Defamation: Costs, Process and What to Expect
by Bryan Driscoll
Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
Build Your Legal Practice with Effective Online Networking
by Jamilla Tabbara
How thoughtful online networking supports sustained legal practice growth.
Blogging for Law Firms: Turning Content into Client Connections
by Jamilla Tabbara
How law firms use blogs to earn trust and win clients.
Reddit’s Lawsuit Could Change How Much AI Knows About You
by Justin Smulison
Big AI is battling for its future—your data’s at stake.
How to Choose a Good Lawyer: Tips, Traits and Questions to Ask
by Laurie Villanueva
A Practical Guide for Your First-Time Hiring a Lawyer