Koichi Tsujii
About Koichi Tsujii
Koichi Tsujii is a lawyer based in Tokyo, JP and has been recognized in The Best Lawyers in Japan™ since 2009. Koichi Tsujii is recognized in the following practice areas:
- Tokyo, Japan
- Corporate and Mergers and Acquisitions Law
- Intellectual Property Law
- Patent Law
- Technology Law
Current Firm: Nakamura & Partners
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.
Mitsuhiro Kamiya is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Mergers and Acquisitions Law. Mitsuhiro, 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 Mitsuhiro is held by other top lawyers in the same geographic and legal practice area.
Christopher M. Hodgens 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. Christopher M., 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 Christopher M. is held by other top lawyers in the same geographic and legal practice area.
Shigeaki Itoh is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Shigeaki, 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 Shigeaki is held by other top lawyers in the same geographic and legal practice area.
Hiroyuki Sanbe is a top attorney recognized by Best Lawyers in the practice area(s) of International Business Transactions. Hiroyuki, who practices law in Tokyo, Japan, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hiroyuki is held by other top lawyers in the same geographic and legal practice area.
Chris Spalding is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law. Chris, 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 Chris is held by other top lawyers in the same geographic and legal practice area.
Partner at Chuo Sogo Law Office; secondment at Supervisory Coordination Division, Supervisory Bureau, Financial Services Agency, Japan as a fixed-term government official (Jan. 2014 to Dec. 2015); registered as Foreign Lawyer in Singapore (Nov. 2012 to Oct. 2013); foreign Lawyer at Rodyk & Davidson LLP, Singapore (Nov. 2012 to Oct. 2013); visiting attorney at Barack Ferrazano Kirschbaum & Nagelberg LLP, Chicago/USA (Aug. 2012 to Sep. 2012).
Ian S. Scott is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Mergers and Acquisitions Law, Media and Entertainment Law and Sports Law. Ian S., who practices law in Tokyo, Japan, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ian S. is held by other top lawyers in the same geographic and legal practice area.
Takaya Konishi is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. Takaya, 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 Takaya is held by other top lawyers in the same geographic and legal practice area.
Kenneth A. Siegel 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. Kenneth A., 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 Kenneth A. is held by other top lawyers in the same geographic and legal practice area.
Explore and Learn
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.
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.
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
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.
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
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.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.