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Business Law Department


The Business Law Department of ICS is the leading institution for advanced business law education in Japan aimed at practicing legal professionals who are currently living and working in Japan. It offers a rich curriculum of business law classes and focuses on combining practice with theory. Class are taught in the evening and on weekends, enabling students to continue working while earning their degree.

A significant number of our faculty has substantial full-time work experience as practicing lawyers or other professionals. A very low student/faculty ratio of about 3:1 allows close faculty supervision of student work and enables intensive in-class interaction. The Business Law Department is located in the convenient Chiyoda ICS campus, just north of the Imperial Palace.

The Business Law Department will be moved from ICS to the Graduate School of Law from April 2018 as a result of administrative reorganization of Hitotsubashi University. However, it will remain at the Chiyoda campus to maintain and strengthen its excellent qualities and further its educational goals.

Courses of Study

The Business Law Department currently offers Masters and PhD programs in Business Law.

In the Masters Program in Business Law (MA degree), students can focus on business law, including corporate, economic (antitrust and fair trade), intellectual property, financial, tax, and labor law. Research professors and professionals with extensive practical experience (lawyers and other experts) will cooperate closely, offering lectures and research guidance, and teaching students to handle practical advisory work and dispute resolution. This provides students with the opportunity to understand, both theoretically and systematically, the varied problems that corporate legal departments, lawyers and patent attorneys confront in practice.

From April 2018, students can complete the following concentrations resulting in the award of a Certificate in addition to the MA degree:

  • Intellectual Property – within the total required credits, complete a specified minimum number of courses relating to Intellectual Property and write a thesis in Japanese under the close supervision of the faculty thesis advisor.
  • Global Business Law (“GBL”) - within the total required credits, complete a specified minimum number of credits taught in English (for those interested, all credits can be completed using English language course offerings) as well as a research paper equivalent to a thesis and similarly supervised, albeit permitting alternative styles and formats. The research paper must also be written in English. This concentration was designed in response to the growing need in Japan for internationally-minded business law professionals who can work effectively in English as well as to make Japanese business law and practice more accessible to non-Japanese legal professionals working in Japan who prefer to study in English.

The Doctoral Program in Business Law (PhD degree) is available to a limited number of excellent students each year and requires development and completion of a substantial dissertation, under the close supervision of the faculty thesis advisor. Please note that currently Doctor’s dissertations in languages other than Japanese cannot be accepted.

Business Law Student Exchange Program

This student exchange program provides a limited number of non-Japanese law students from exchange partner law schools in Australia, Germany, Singapore and the U.S. with an opportunity to study Japanese and international business law in English during the Fall semester at ICS.

Business Law Faculty


Hidetaka Aizawa

University of Tokyo (BA, 1977); University of Tokyo (LLM, 1979, )
Professor Aizawa taught at Tsukuba University (1984-1998), Waseda University (2000-2006), and University of Tokyo (2003-2008), and was a Visiting Scholar at the University of Washington (1987-1988) and a Visiting Professor at Harvard Law School (2007). His area of research interest is intellectual property, and he recently completed the fifth edition of his book entitled “Intellectual Property Law.” Professor Aizawa currently serves on three government advisory councils, including the Industrial Property Council of the Japan Patent Office. Professor Aizawa joined ICS in 2004.

Bruce Aronson

Boston University (BA, 1974); Harvard Law School (JD, 1977)
Professor Aronson was a corporate partner at the law firm of Hughes Hubbard & Reed LLP in New York (1989-2000) and a professor of law at Creighton University (2004-2013). He has also engaged in research and teaching at a number of U.S. law schools including Columbia (2002-2004), Michigan (2004), Boston University, and Georgetown. His experience in Japan includes research at the University of Tokyo (Fulbright, 2000-2002, 2004), the Bank of Japan (2010), and Waseda University (Fulbright, 2011-2013). His main area of research is comparative corporate governance with a focus on Japan.
He also serves as an outside director of Eisai Co., Ltd.
Professor Aronson joined ICS in 2013 and is admitted to practice in New York.

Vicki L. Beyer

University of Nebraska at Omaha (BA, 1980), University of Washington (MA, 1987), University of Washington School of Law (JD, 1990), Bond University (LL.M. 1994)
Professor Beyer, a lawyer admitted in Washington state, worked as an in-house lawyer for multinational corporations for 17 years, specializing in labor/employment and corporate governance. Before that, she ran and taught in the Temple University Law School Program in Japan and also taught at Bond University. She has been a research scholar at the University of Tokyo and a part-time lecturer at Keio University, Meiji Gakuin University, Nagoya University and Sophia University. She has served as both a Governor and a Vice President of the American Chamber of Commerce in Japan and was a member of the Japanese Ministry of Justice’s Internationalization Study Group (2002-04). She joined ICS in 2017.

Yuriko Inoue

University of Tokyo (BA, 1986), University of Tokyo (LLB, 1990)
Professor Inoue taught at the University of Tokyo (1993-1995), Tsukuba University (1995-2002), and Kobe University (2002-2010), and was a Visiting Professor at the Institute of Information, Amsterdam University (2006, 2007-2008). Her area of research is intellectual property law. Professor Inoue has recently co-authored a book on information law and a casebook on intellectual property law. She is a member of a number of advisory councils, including the Council for Industrial Policy of the Ministry of Economy, Trade and Industry (METI). Professor Inoue joined ICS in 2010.

Masakazu Iwakura

University of Tokyo (LLB, 1985); Harvard Law School (LLM, 1993)
Professor Iwakura is a partner at the law firm of Nishimura & Asahi (Senior Partner & Executive Committee Management Member). He has practice experience at Debevoise & Plimpton (New York, 1993-1994) and Arnold & Porter (Washington DC, 1994-1995). He has twice been a Visiting Professor at Harvard Law School (2007, 2013). His field of expertise is Mergers & Acquisitions. In addition to a variety of publications in that field, Professor Iwakura currently serves as an independent director or independent outside auditor for three listed Japanese companies. He joined ICS in 2006 and is admitted to practice in Japan and New York.

Hiroya Nakakubo

University of Tokyo (LLB, 1980); Harvard Law School (LLM, 1990)
Professor Nakakubo has taught at Fukuoka University, Chiba University, and Kyushu University. He was a Visiting Scholar at University of Pennsylvania Law School (1989-1990), University of Washington Law School (1997), Cornell Law School (2010, and University of Glasgow (2013), and was a Visiting Professor at Johann Wolfgang Goethe University (1999). Professor Nakakubo has published widely on both Japan and the U.S. in his field of labor and employment law. He serves as a member of both Japan’s Central Labor Relations Commission and its Central Minimum Wage Council. Professor Nakakubo joined ICS in 2007.

Chihiro Nunoi

Hitotsubashi University (LLB, 1979); Hitotsubashi University (MA, 1981)
Professor Nunoi taught at Tokai University (1984-1998), and has been a Visiting Scholar at Bonn University (1986-1987) and Munich University (1993-1994) in Germany. His research broadly covers international and comparative commercial law, and he has published articles in English, German, and French, in addition to those in Japanese. Professor Nunoi’s recent work has a focus on Vietnam and Southeast Asia. He served as chief committee member of the JICA legislative cooperative project in China (2004-2009). Professor Nunoi joined ICS in 1998.

Hiroyuki Ogawa

University of Tokyo (LLB, 1997), Hitotsubashi University (Phd, 2003); Washington University (LLM 2004)
Professor Ogawa has been an associate professor of law at ICS since 2008. His major research interest is the comparative study of financial regulations in Japan and the United States. His recent publication includes “Financial Instruments and Exchange Act” (Shinseisha 2012) and “Commercial Law” (Shinseisha 2013). His Japanese translation of Marc I. Steinberg’s “Understanding Securities Law, 4th Ed.” (Matthew Bender & Co. 2007) was published by LexisNexis Japan. Professor Ogawa is admitted to practice in New York.

Zenichi Shishido

University of Tokyo (LLB, 1980); University of Tokyo (Phd, 2007)
Professor Shishido taught at Seikei University (1983-2009), and has been a Visiting Professor at Columbia Law School (1998-1999) and Harvard Law School (2005). He continues to be a Visiting Professor at UC Berkeley (Boalt Hall) on a regular basis. Professor Shishido is a well-known authority on Japanese and comparative corporate governance, having written extensively on the subject in both Japanese and English. He has served on advisory committees to Japan’s Ministry of Economy Trade and Industry (METI) and Ministry of Posts and Telecommunications (MPT). Professor Shishido joined ICS in 2009.

Kimitoshi Yabuki

University of Tokyo (LLB, 1982); Columbia Law School (LLM, 1991)
Admitted: Japan (Tokyo Bar Association, 1987); New York (1992)
Professor Yabuki was a partner at the law firm of Nagashima Ohno & Tsunematsu (1987-1996), worked for Covington & Burling (Washington DC and Brussels, 1991-1993), and since 1996 has acted as the managing partner of Yabuki Law Office. He is an expert on antitrust law. In addition to his publications in that field, Professor Yabuki holds leadership positions in bar committees in Japan and Asia in the areas of antitrust and international relations. He also has served as independent director and independent outside auditor for a number of leading Japanese corporations (currently Member of the Audit & Supervisory Board, Ricoh Company, Ltd.). Professor Yabuki joined ICS in 2010, and is admitted to practice in Japan and New York.

Masao Yoshimura

University of Tokyo (LLB, 1999)
Professor Yoshimura taught at Yokohama National University (2002-2012). His area of research is tax law. Among his publications, he recently co-authored a book in Japanese entitled “Tax Law” and produced an article in English on “The Debt-Equity Conundrum” for Cahiers de Droit Fiscal International. Professor Yoshimura joined ICS in 2012.

Associate Professors

Junsuke Senbon

University of Tokyo (BS, 2002); University of Tokyo (MA, 2004);
Toin University of Yokohama Law School (JD, 2009)
Professor Senbon worked for thirteen years at the Japan Patent Office as a patent examiner and in policy planning. His area of research interest is patent law and policy. Professor Senbon joined ICS in 2017.

Part-time Lecturers and Guest Speakers

The Business Law Department is honored to have a number of leading legal practitioners and scholars as part-time lecturers or guest speakers in its course offerings, including:

  • Masako Banno (Okuno & Partners) – Japanese Securities Law
  • Paul Davis (Baker McKenzie) – Dispute Resolution
  • Pieter de Gannon (Morrison & Foerster) - Legal Aspects of Intellectual Property Strategy
  • Ike Farida (Farida Law Office, Indonesia) – Asian Business Law
  • Carrie Bee C. Hao (Romulo Law Office, Philippines) – Asian Business Law
  • John Inge (Orrick, Herrington & Sutcliffe) – Legal Aspects of Intellectual Property Strategy
  • Mitsuo Matsushita (Nagashima Ohno & Tsunematsu) – Comparative Competition Law
  • Anh Tuan Nguyen (LNT & Partners, Vietnam) – Asian Business Law
  • John Roebuck (Jones Day) – International Contract Drafting
  • Dan Rosen (Chuo University) – International Entertainment Law
  • Chiaki Sato (Aoyama Gakuin University) – Civil Law from a Comparative Perspective
  • Allan Smith (RGA Reinsurance Co.) – Comparative Competition Law
  • Derek Wilson (Shartsis Friese LLP) – Mergers and Acquisitions
  • Akiko Yamakawa (Vanguard Lawyers) – Comparative Labor and Employment Law
  • Kazuhiko Yoshida (Nakamura & Partners) - Legal Aspects of Intellectual Property Strategy
  • Stan Yukevich (Morrison & Foerster) - Mergers and Acquisitions