Siam Premier International Law Office Limited

Firm Profile

Rankings

Asia-Pacific

Awarded leading firm in Asia-Pacific 2026

Chambers and Partners

Ranked Departments:

Chambers and Partners

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Overview

Provided by Siam Premier International Law Office Limited

Firm Overview

Chairman: Prof. Dr. Surakiart Sathirathai

Managing Partner: Chatchavej Chitvarakorn

Number of partners: 15

Number of Lawyers (fee-earners): 90+

Languages: Thai, English

Office Location: Bangkok, Thailand

Firm Details

Siam Premier International Law Office Limited is a leading independent Thai law firm, advising foreign and local clients on the full spectrum of domestic and cross-border corporate transactions, major projects, regulatory matters and disputes in Thailand. Established in 1990, Siam Premier has a strong history of providing pragmatic and innovative solutions to its clients’ legal challenges, enabling its clients to unlock opportunities and achieve commercial outcomes. Siam Premier frequently advises multinational clients and works with leading law firms from across the globe on cross-border and multi-jurisdictional transactions and disputes where the firm adds value by understanding the nuances of local challenges, navigating complex regulatory frameworks, and providing valuable insight into the local business and legal environment in Thailand.

Main Areas of Practice

18 Practice Groups:

  • Antitrust & Competition
  • Banking & Finance
  • Capital Markets
  • Corporate & Commercial
  • Foreign Direct Investment
  • Data Protection
  • Digital Assets
  • Employment & Labour
  • Mergers & Acquisitions
  • Insurance
  • Medical Malpractice
  • Litigation & dispute resolution
  • PPPs & Infrastructure
  • Projects & Energy
  • Real Estate & Construction
  • Restructuring & insolvency
  • Taxation
  • Private Client

10 Sectors:

  • Automative
  • Aviation
  • Food & Beverage
  • Healthcare & Pharmaceuticals
  • Mining & natural resources
  • Real Property & construction
  • Shipping & logistics
  • TMT
Firm Details
Firm Overview
Firm Overview
Main Areas of Practice
International Work
Offices
Offices
Offices
Practice Areas and Offices

Practice Areas and Offices

International Work

  • Acting for a UK headquartered global health insurance company on the THB 2.17 billion sale of its Thai subsidiary to a US managed global health insurance company.
  • Advising a SGX listed company in its contemplated reverse takeover transaction by conducting a legal due diligence on Thai subsidiaries of a Singaporean company, and providing a write-up on the relevant Thai laws and regulations to be included in the RTO prospectus/circular for submission to the Singapore Exchange Securities Trading Limited (SGX-ST)
  • Acting for a global life insurance company and its Thai subsidiary in the THB 17.5 billion 100% share acquisition of a life insurance subsidiary of a SET-listed bank, and advising on the bancassurance agreement between the parties.
  • Acting for a Swiss-based global pharmaceutical company on the USD 5.4 billion disposal of its animal health business to a US global animal health company with respect to Thai assets.
  • Acting for a global construction consultancy company in the establishment of a foreign-owned company, applying for the Board of Investment (BOI) Promotion Certificate under the category of Trade and Investment Supporting Office (TISO), obtaining foreign business certificate with respect to such BOI certificate, applying for full commencement of business with the BOI, submissions of the progress reports and annual report to the BOI.
  • Advising a global logistics company in various employment matters, particularly in relation to ongoing compliance with the Labour Protection Act.
  • Representing a Chinese vehicle manufacturing company in a lawsuit filed by British global automotive company on the grounds of trademark infringement and licensing agreement.
  • Advising a foreign EPC contractor on the RFP, Project Agreement and Thai laws in the bidding phase of the High Speed Rail Linking Three Airports Project.
  • Advising a leading global provider of B2B travel services on legal and tax considerations for its global restructuring of its hotel reservation and meeting and events business.
  • Acting for a Spanish global energy company in the USD 2.23 billion acquisition of an international exploration and production company.

Ranked Offices

Provided by Siam Premier International Law Office Limited

Address (A-Z)

Thailand - Head office

Bangkok

26th Floor, The Offices at Central World 999/9 Rama I Road Pathumwan , Bangkok, Bangkok, Thailand, 10330, Bangkok

www.siampremier.com

+66 2 646 1888

Chambers Laurel

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Chambers Laurel

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Siam Premier International Law Office Limited