Chandler MHM

Panupan Udomsuvannakul


Panupan Udomsuvannakul

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  • ALB Asia’s Super 50 TMT Lawyers 2023
  • ALB Asia’s Super 50 TMT Lawyers 2022


Panupan has a very diverse legal experience and has been involved in joint ventures, cross-border mergers & acquisitions (M&A) and support for MNCs and Japanese companies that are expanding their businesses into Thailand and Thai companies expanding their businesses outbound, since 2012, including drafting and negotiating contracts as well as legal documents used in corporate commercial, joint ventures, and cross-border mergers & acquisitions transactions. Recently, he acted as local counsel for several multi-billion dollars global, regional and cross-border deals for MNCs and Japanese companies. He is also experienced in providing legal advice in relation to foreign direct investment, personal data protection, regulatory matters and corporate operation in various sectors with focus on technology, e-commerce, cryptocurrency and blockchain related businesses, fintech, and artificial intelligence (AI) related matters.

Panupan is also an active member of the firm's Technology. Media and Telecommunications (TMT) practice group.

He has wide range of knowledge of the e-commerce and tech industry and is a columnist of a business and technology law related column at Bangkok Business newspaper, a well-known business newspaper in Thailand.

Panupan is also a speakers and guest lectured at well-known universities both in Thailand and Japan, in-house training sessions and public seminars on wide ranges of topics including mergers & acquisitions (M&A), foreign direct investment, technology contracts and business related topics and general contract drafting and negotiation.


Some Representative Transactions:

Technology, Media and Telecommunications

  • Advised a number of Japanese and international tech companies on Thai regulatory issues.
  • Acted as local counsel for various investors for due diligence, acquisition and participation in fund raising of Japanese, Singaporean and Thai tech companies.
  • Acted as local counsel for a world leading software solutions company in its acquisition of a regional business.
  • Acted as local counsel for acquisition of a Thai software group company.

Corporate and Mergers & Acquisitions

  • Acted as local counsel for several multi-billion dollars global, regional and cross-border deals for multinational companies.

  • Assisted Thai listed companies in relation to their investment in renewable energy sector in Japan.

  • Represented Thanachart Bank Pcl. in relation to a sale of majority stake in Thanachart Fund Management to Prudential Corporation Holdings/Eastspring with a transaction value of more than USD250 million.

  • Represented a leading Japanese e-commerce company in Japan in sale of its subsidiary in Thailand.

  • Represented leading Japanese real estate developers, on investment in condominium development projects in Bangkok.


  • Columbia Law School (LL.M. with James Kent Scholar, 2018)
  • The University of Tokyo (Graduate Schools of Law and Politics, LL.M., 2012)
  • The University of Tokyo (LL.B., 2010)


  • Admitted in New York State, 2020
  • Thai lawyer license, 2014


  • Member of New York State Bar Association
  • Extraordinary member of Thai Bar Association


  • with Uría Menéndez, Madrid (April – July 2019)
  • with Slaughter and May, London (September 2018 – March 2019)


  • "The Legal 500 Country Comparative Guides 2023 Thailand - TMT" (2023, co-author)
  • “Chambers Global Practice Guide – Fintech” (2023, co-author)
  • "Asian Legal Business - E-Meetings - The New Normal" (Thomson Reuters Corporation Pte Ltd., September 2020, co-author)
  • "M&A Legislation in Emerging Asia Countries – Third edition" (Shojihomu Co., Ltd., 2020, co-author)
  • "Guide to Current Thai Business Laws - Second edition" (Shojihomu Co., Ltd., 2019, co-author)

Panupan Udomsuvannakul:Newsletters

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