Pornphan Uasunthonphanit


Contact Details

T: + 66 2 264 8000
F: + 66 2 657 2222

Pornphan Uasunthonphanit is an associate in the competition and antitrust practice group. She advises clients on applications for merger clearance, merger notifications, Trade Competition Commission proceedings, compliance with the law and provides training seminars on the Trade Competition Act. She also has experience in dispute resolution in a variety of industries. 

Competition and Antitrust

Advised Thailand’s leading cineplex operator on regulatory issues in relation to its business practices and compliance with Thai competition law.

Advised on all merger control matters resulting in a successful pre-merger clearance (the second ever case accepted for consideration by the Trade Competition Commission) for a leading integrated marine transport conglomerate in the Asia-Pacific Region in its THB 346.5 million (USD 11 million) acquisition of shares in a marine transport subsidiary of Thailand’s largest refinery.

Litigation and Dispute Resolution

Assisting PTT Public Company Limited, the largest corporation in Thailand, in litigation regarding engineering, procurement and construction contracts in relation to a pipeline project valued at more than THB 8.5 billion.

Representation of Mitsui Sumitomo Insurance Company Limited (Thailand), part of the largest insurance group in Japan and worldwide, in successfully defending a THB 2.154 billion complex litigation claim (approximately USD 69 million) made by a major multinational automobile company, the plaintiff. The court of first instance dismissed all of the plaintiff’s claims. This case also set the precedent that an insurance claim in relation to business operations is a civil case, rather than a consumer case, thereby shifting the burden of proof to the plaintiff and barring claims for punitive damages.

Representation of a media and entertainment company in defending claims in arbitration proceedings conducted under the Swiss Chambers’ Arbitration Institution. The dispute arose out of agreements on the rights to broadcast regional and international football matches and the guarantee provided thereunder. (2019-2020)

Representation of an Indonesian entrepreneur in several civil and criminal disputes with the co-owner of a technology and cloud computing business in Thailand. The case involved control of the company, as well as cross-border embezzlement of funds and misappropriation of investments procured through many successive years of fraud. The amount in dispute was USD 25 million. (2019)


LL.B. (1st Class Honors), King Bhumibol Scholarship, Thammasat University, 2018




Thai, English

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