Colin Trehearne

Foreign Law Counsel

Colin Trehearne

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Contact Information


Practice Areas

Colin Trehearne:Awards

The Best Lawyers in Japan™ and Best Lawyers: Ones to Watch in Japan™ (2025 edition)

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Colin Trehearne:News

Public Service
Colin Trehearne becomes a Specially Appointed Professor of Law at Sophia University
Firm News
Colin Trehearne, international dispute resolution specialist, joins Mori Hamada & Matsumoto

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Colin Trehearne:Newsletters

The Screening System for Essential Infrastructure Facilities begins under The Economic Security Promotion Act of Japan: Key Practice Points for Potentially Affected Businesses DownloadPDF
Japan Places New Restrictions on Exports of Semiconductor Manufacturing Equipment DownloadPDF
MHM Asian Legal Insights Special Edition Vol.17 (October 2022) DownloadPDF

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Colin Trehearne:Publications

"In-Depth: Space Law (5th Edition) - Japan Chapter"
Magazine Article
"Unfamiliar Foreign Contract Terms (Part 4): Introduction to Provisions Relating to ESG"
Magazine Article
"Explaining Japan’s Decision to Join the MPIA: Avoiding the Void"

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Colin Trehearne:Other


  • University of Calgary (B.A. First Class Honors, 2004)
  • University of British Columbia (M.A. 2007, J.D. 2011)
  • Ministry of Education, Culture, Sports, Science and Technology (Japan) Research Scholar (2007)
  • with Fraser Milner Casgrain LLP (2011-2013)
  • with Herbert Smith Freehills GJBJ (2013-2018)
  • Lecturer and Associate Professor at Keio Law School (2014-2018)
  • with Boies Schiller Flexner LLP, UK office (2018-2021)

Major Activities

  • Specially Appointed Professor of Law at Sophia University (2023-)

Bar Admissions

admitted in Canada (Alberta), 2012
admitted in England and Wales, 2020
admitted as a registered foreign lawyer, 2024
Daini Tokyo Bar Association