Atsumi & Sakai
Kohji Hayakawa
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Kohji Hayakawa

オブ・カウンセル

Main Practices
General Civil Litigation / IT System Development Disputes / Labor Disputes / Arbitration, Conciliation, and Other ADR (Domestic) / Arbitration, Conciliation, and Other ADR (International) / Overseas Disputes and Litigation / Maritime Disputes (Dry and Wet Shipping) / Maritime and Shipping Contracts and Logistics / Carbon Neutral / Renewable Energy, etc. / Environmental Law / Global Warming Prevention / WTO, Trade Agreements, and Investment Agreements / Export Controls, Imports, Customs, and Tariffs / IT, Telecommunications, and Radio / Robots, AI, and Autonomous Vehicles / Quantum Computing, Blockchain, and New Technologies / Sports Law / United Kingdom / Europe and the EU
Other Practices
Ocean Transport (Dry Shipping) / Marine Accidents (Wet Shipping)
Languages
Japanese / English
Office
東京オフィス
Qualifications
Marine Procedure Commission Agent (2019)
Maritime Counselor (2015)
Small Boat Pilot License (2014)
Contact

Overview

Publications & Seminars

Awards

Admitted

Lawyer admitted in Japan (Bengoshi) (2014)

Solicitor admitted in England & Wales (2022)

*Atsumi & Sakai is not regulated by the Solicitors Regulation Authority for England and Wales.

Bar Association

Tokyo Bar Association, Law Society of England and Wales

Education

The University of Tokyo (LL.B., 2011)
The University of Tokyo, School of Law (J.D., 2013)
Queen Mary University of London (LL.M. in International Shipping Law, Distinction, 2020)

Background

Max Law Office (December 2014-December 2015)
Stephenson Harwood LLP (July 2015-August 2015)
Anderson Mori & Tomotsune (January 2016-January 2025)
Sojitz Corporation (June 2018-June 2019)
Reed Smith LLP (September 2020-December 2020)
International Tribunal for the Law of the Sea (ITLOS) (February 2021-April 2021)
 

Member

Japan Association of Arbitrators (JAA)
Member, Chartered Institute of Arbitrators
Japanese Maritime Law Association

Publications

  • “2021 Arbitration Rules and 2014 Mediation Rules in Japanese,” International Chamber of Commerce (ICC) (2024) [Co-translation]
  • “Trends in Overseas Dispute Resolution (34) Disputes over Cryptocurrency,” JCA Journal (2023)
  • “Case law: Significance of Demurrage in Voyage Charter Contracts and Claims for Damages — K Line Pte Ltd v Priminds Shipping (HK) Co Ltd (The “Eternal Bliss”)[2021] EWCA Civ 1712,” Journal of the Maritime Law Institute (2022)
  • “Case law: Whether a shipowner can claim against a charterer for damage to cargo caused by the charterer's failure to discharge the cargo within the laytime period in excess of the agreed demurrage — K Line Pte Ltd v Priminds Shipping (HK) Co Ltd (The “Eternal Bliss”)[2020] EWHC 2373 (Comm),” Journal of the Maritime Law Institute (2021)
  • “Trends in Overseas Dispute Resolution (12) Maritime Disputes in the United Kingdom,” JCA Journal (2021)
  • “Evaluation of and Future Issues Concerning the Supreme Court's January 31, 2007 Decision in the Case on Motion for a Provisional Disposition Order to Remove Posted Articles,” Hanrei Jiho No.2328 (2017) [Co-author]
  • “Blockchain Technology and Potential,” LIBRA, April 2017 (2017) [Co-author]

Web Articles

  • “Enforcement of Judgments: Overview (Japan),” Practical Law, Thomson Reuters (October 2025) [Co-author]
  • “Statutory limitations of liability for vessels and other transportation interests in Japan,” International Bar Association (September, 2025) 
  • The Legal 500: International Trade Country Comparative Guides, Japan chapter, Legalease Ltd. (December, 2024) [Co-author]
  • Lexology Panoramic: Arbitration, Japan chapter, Law Business Research Ltd. (March, 2024) [Co-author]
  • The Legal 500: International Trade Country Comparative Guides, Japan chapter, Legalease Ltd. (December, 2023) [Co-author]
  • “Japan: Trends & Developments,” Chambers Global Practice Guides - International Arbitration 2022, Chambers and Partners (August, 2022) [Co-author]
  • “Amendments to the Code of Civil Procedure (IT-related), etc.,” SHOJIHOMU PORTAL (June, 2022) [Co-author]
  • “Ministry of Justice Releases Draft Outline for Amendments to the Arbitration Act by the Arbitration Legislation Subcommittee of the Legislative Council,” SHOJIHOMU PORTAL (November, 2021) [Co-author]
  • “Consumer Affairs Agency Releases Report by Study Group on the Act on Special Measures Concerning Consumer Court Proceedings,” SHOJIHOMU PORTAL (October, 2021) [Co-author]
  • “UK’s National Security and Investment Bill: can financiers avoid being caught out?” Global Banking & Finance Review (February, 2021) [Co-author]

Seminars

  • The Best Lawyers in Japan 2027
    • Litigation
  • The Best Lawyers in Japan 2026
    • Financial Institution Regulatory Law (Ones to Watch)
  • The Best Lawyers in Japan 2025
    • Financial Institution Regulatory Law (Ones to Watch)
  • The Best Lawyers in Japan 2024
    • Financial Institution Regulatory Law (Ones to Watch)
  • The Best Lawyers in Japan 2023
    • Financial Institution Regulatory Law (Ones to Watch)