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Atsumi & Sakai

Kumpei Ohashi

Kumpei Ohashi



  • Corporate Reorganization
  • IP&IT
  • Litigation

WSG Practice Industries


Japan Patent Attorneys Association
IP Lawyers Network Japan
NPO Institute of Digital Forensics
Japanese Association for Business Restructuring
Insolvency Law Committee of the Tokyo Bar Association
New York State Bar Association
Manager of the JFBA Center for Criminal Defence
Vice-Chairperson of the Criminal Defence Committee of the Tokyo Bar Association
The Council for Disabled PeopleNs Criminal Issues of the Three Bar Associations in Tokyo

Bar Admissions

Japan (2002) and New York (2015)


The University of Tokyo (LL.B., 1997)
The Legal Training and Research Institute of the Supreme Court of Japan
New York University School of Law, Visiting Scholar (2012-2013)
Columbia Law School (LL.M., 2014)
Areas of Practice

Corporate Reorganization | IP&IT | Litigation

Professional Career


Panelist at a session entitled "Cooperation in White Collar Crime Cases: Legal and Practical Challenges Encountered by Prosecutors and Defense Attorneys," at LAWASIA's 30th Conference, September 20, 2017

Professional Activities and Experience

Kanto Law Office (2002-2004)
Matsuda & Partners (2004-2015)

- "New Perspectives of Criminal Proceedings (Part 2)," SEIBUNDOH Publishing Co., Ltd. (2017) [Co-author]
- "How Can You Represent Those People," GENDAIJINBUNSHA (2017) [Translator]
- "Criminal Defence Clinic (5): Banning Interviews," KIKAN KEIJI BENGO, Issue No.91, GENDAIJINBUNSHA (2017)
- "Inappropriate Defence and "Quality of Criminal Defence"," "Constitutional Criminal Defence: Practical Approach by Attorney Takashi Takano," Nippon Hyoronsha Co., Ltd. (2017)
- "Getting the Deal Through - Risk & Compliance Management 2017," Japan chapter, Law Business Research Ltd. (2017) [Co-author]
- "Expansion of Video-Link Witness Examination," authored in Japanese by Kumpei Ohashi, Partner, has been published in Jiyu to Seigi (Liberty & Justice) Vol.68 No.4, the Japan Federation of Bar Associations (2017)
- "Changes To The Enforceability Of Exclusive Foreign Jurisdiction Agreements Under Japanese Law," Expert Guide - Litigation & Dispute Resolution 2016, Corporate LiveWireE2016E[Co-author]
- "China Outbound Investment Guide 2016, Japan Chapter, ALM PublicationE2016E[Co-author]
- "[Special Report: Fighting Avoidance Cases] �C Disputing The Evidence", KIKAN KEIJI BENGO, Issue No.86, GENDAIJINBUNSHA (2016)
- "Legal Representation in Criminal Appeals", SEIBUNDOH Publishing Co., Ltd. (2016) [Co-author]
and more.

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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