Antitrust and Competition

Antitrust and Competition

Safeguarding our clients’ interests with regulatory expertise
Antitrust and Competition

Siam Premier’s Antitrust and Competition Practice has local expertise in Thai trade competition law, the trade competition aspects of domestic and cross-border M&A transactions, and also acts as Thai counsel representing Thai corporations in multijurisdictional antitrust and competition investigations and proceedings abroad. Our practice is focused on delivering strategic, commercially driven advice to support clients in navigating complex regulatory frameworks and ensuring full compliance with applicable laws.

We understand our clients’ businesses, industries and sectors, and we provide solutions that align with our clients’ commercial objectives while protecting their interests. We have recently represented clients in significant cross-border competition matters in the aviation, commodities, transport and logistics market sectors.

We have strong working relationships with Thai regulators, and regularly liaise with the Office of the Trade Competition Commission in relation to trade competition inquiries and matters.

We provide comprehensive legal advisory services across all aspects of antitrust and trade competition law in Thailand including:

  • Advising on matters relating to abuse of market dominance, cartel conduct, and unfair trade practices from a trade competition law perspective;
  • Advising on merger control analysis under trade competition law, including relevant sector-specific laws and regulations, as well as assisting with pre-merger filings and post-merger notifications in compliance with applicable legal requirements; 
  • Providing comprehensive legal guidance on anti-competitive arrangements to ensure alignment with applicable legal and regulatory standards; 
  • Providing training programs for Thai and multinational corporations, offering practical insights into trade competition law and regulatory compliance; and
  • Advising as Thai counsel in multijurisdictional competition investigations and proceedings.

Our Recent Work

01
Advising  Thai and multinational companies in a number of pre-merger and post-notification filings, as well as in relation to other trade competition law matters concerning their operations in Thailand.
02
Advising and assisting a foreign corporation in relation to filing of a pre-merger approval application in connection with an M&A transaction in the logistics sector.
03
Advising and assisting a foreign corporation in relation to post-merger notification in connection with an M&A transaction in the commodities sector.
04
Advising as Thai legal counsel of the Thai national airline including coordinating with its lawyers in various jurisdictions such as the US, the UK, the Netherlands, Australia, New Zealand and Korea in connection with antitrust investigations and proceedings pending in various countries.

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12 06 2026 1

Antitrust and Competition


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Antitrust and Competition