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Biography

Chitchai Punsan is a partner in Tilleke & Gibbins’ dispute resolution group in Bangkok, where he has built a distinguished practice representing multinational corporations, organizations, and individual clients in complex disputes throughout Thailand and the region. Drawing on years of experience both in private practice and as in-house counsel, Chitchai brings a strategic, business-focused perspective to dispute resolution that has earned him the trust of clients facing their most challenging legal matters.

Chitchai’s practice encompasses a broad range of contentious matters, with particular depth in customs violations, economic crime and regulatory investigations, product liability disputes, and complex civil and criminal litigation. His approach combines rigorous legal analysis with practical commercial insight, enabling him to develop strategies that align closely with clients’ broader business objectives. Prior to joining Tilleke & Gibbins, Chitchai served as in-house counsel to multinational corporations and gained firsthand understanding of the pressures and priorities that drive corporate decision-making.

Beyond his client work, Chitchai is recognized as a thought leader on product liability, compliance, and customs and trade disputes, regularly sharing his insights in articles and professional events. He has also provided his expertise to a wide range of research projects for the Organisation for Economic Co-operation and Development (OECD) and the World Bank, playing an active role in shaping policy discussions on legal and regulatory issues impacting the region.

Chitchai is a member of the Lawyers Council of Thailand and the Thai Bar Association, maintaining active involvement in the legal profession both locally and internationally.

Experience

  • Advised clients on third party due diligence (including onboarding of new counterparties), sanctions, anti bribery and corruption (ABC), anti fraud, anti money laundering (AML), market manipulation, and broader financial regulatory compliance.
  • Counseled a global defense contractor in preparing witness statements in a corruption investigation concerning multiple defense contracts with the Government of Thailand involving the client’s defense systems.
  • Counseled a global IT company in responding to National Anti Corruption Commission (NACC) information requests regarding alleged corruption in several procurement projects involving the client’s software.
  • Advised and delivered training to numerous multinational corporations on compliance frameworks, policies, internal controls, and risk mitigation.
  • Conducted internal investigations for several well known international corporations into potential compliance violations.
  • Led an internal investigation for a global medical device company into alleged collusion with state hospitals during public tenders; conducted document reviews and interviews and provided remediation and compliance recommendations.
  • Representing an electronics manufacturer in an NACC initiated corruption matter arising from a multi party probe into nationwide police “smart car” procurements overseen by a former police chief; navigating a sensitive enforcement landscape.
  • Served as co counsel with a U.S. firm on an internal investigation for a global beverage company into alleged bribery related to multiple government procurement projects.
  • Advised a global renewable energy company on the construction of temporary hardstands to facilitate access to wind turbines for maintenance purposes.
  • Assisted a global renewable energy company in a dispute with a Thai project owner involving the supply of turbines, where the owner attempted to call a performance bond valued at USD 12 million.
  • Representing a global healthcare product manufacturer in multiple disputes concerning alleged breaches of water and wastewater management agreements and a gas supply agreement, arising from the termination of a construction project.
  • Assisted a global engineering company in several disputes related to breaches of an EPC contract for an energy project.
  • Supported a global engineering company in presenting factual clarifications to a regulatory body regarding the investigation on the construction of multiple gas separation plants.
  • Successfully concluded an extended litigation battle between a construction firm and a project owner.
  • Represented several clients in complex arbitration claims for breach of construction contracts.
  • Successfully concluded an arbitration dispute relating to construction quality.
  • Represented an energy corporation in multiple disputes involving purchase of subsea pipes.
  • Successfully secured favorable appeal rulings on product classification for a leading multinational defense and security company concerning the importation of specialized products into Thailand.
  • Represented a leading provider of supplements and medications in a customs appeal against assessment notices issued by Thai Customs regarding the importation of a food supplement.
  • Advised a global consumer goods company on the importation of Korean-manufactured products stored in a bonded warehouse in China into Thailand, aiming to obtain preferential tariff treatment under applicable FTAs.
  • Successfully assisted a leading Japanese electronics company in an appeal before the Board of Appeals concerning the shipment of electronic products into Thailand.
  • Advised a multinational healthcare and medical services company on the importation of used medical products into Thailand for cleaning and re-export to Asian markets. The advisory included comprehensive regulatory guidance, covering customs, excise, and Thai FDA approvals, and representation in discussions with relevant authorities.
  • Represented a plastics company in a customs dispute involving the importation of machinery into Thailand.
  • Represented a renowned nutrition company in customs classification inquiries and disputes regarding regulatory requirements for vitamins and ingredients.
  • Engaged by a global medical device company to conduct a detailed investigation into alleged unethical bidding practices reported by a whistleblower.
  • Represented a logistics and warehousing company in a civil lawsuit involving a major theft case. An employee responsible for accounting and banking operations was accused of embezzling approximately THB 200 million.
  • Successfully secured a favorable judgment for a cybersecurity company in a lawsuit filed by an activist alleging that his phone was hacked to suppress his activism.
  • Secured a THB 250 million judgment in favor of a multinational steel maker against a debtor in Thailand.
  • Successfully resolved a complex customs dispute with respect to the relevant rules of origin.
  • Represented various clients in customs violation matters in connection with classification disputes.
  • Provided assistance to a multinational corporation in negotiating contracts across the Asia-Pacific region.
  • Advised clients on third-party due diligence (including onboarding new counterparties), sanctions, anti-bribery and corruption, anti-fraud, anti-money laundering compliance, market manipulation, and financial regulatory compliance.
  • Represented the Thai subsidiary of a large multinational logistics company in five court cases involving both criminal and civil matters totaling a claim amount that exceeded THB 200 million, arising out of the dismissal of an executive-level employee.
  • Represented an international animation studio in an employee fraud matter.
  • Provided assistance to a global logistics company in a breach of contract claim against a famous automobile conglomerate in Thailand.
  • Secured a favorable outcome in a labor dispute on behalf of an international car rental company in a claim arising out of the dismissal of an executive-level employee.
  • Concluded a labor dispute for an international clothing company in a claim arising out of the dismissal of an executive.
  • Advised and provided training on compliance to numerous international corporations.
  • Conducted investigations for several well-known international corporations into compliance issues.
  • Represented a multinational fashion firm in a breach of sales and purchase agreement dispute.
  • Represented a multinational logistics company in a complicated logistics services dispute.
  • Successfully concluded wrongful act claims arising from the 2011 floods in Thailand.
  • Advised multinational insurance firms on claims relating to the 2011 floods in Thailand.
  • Advised famous clients on multiple defamation claims.
  • Defended a client on a breach of contract claim arising out of a success-fee dispute.
  • Successfully convinced the Appeals Court to reverse a court order in a family dispute.
  • Represented a multinational shipping company in a liquidation dispute on issue which has never been decided by Thai courts.
ABOUT Chitchai

Location

Languages

    Thai

    English

Education

    LLB, Ramkhamhaeng University

    BBA, Kasetsart University

Insights

August 20, 2026
As part of its membership in Lex Mundi, Tilleke & Gibbins has released the latest edition of its Guide to Doing Business in Thailand, providing an overview of the legal, regulatory, and commercial considerations for companies establishing or expanding operations in Thailand. The 2026 edition offers practical insight into the country’s business environment, investment framework, and operational requirements. The guide covers a wide range of topics relevant to foreign and domestic investors, including: Investment incentives and promotion schemes Financial facilities and banking regulations Exchange controls and money transfers Import and export regulations Business structures and incorporation options Requirements for establishing a business Operational and compliance considerations Business cessation and insolvency procedures Employment and labor laws Taxation Immigration and visa requirements Prepared by Tilleke & Gibbins lawyers across multiple practice areas, the publication outlines key aspects of doing business in Thailand, including foreign investment restrictions, regulatory compliance obligations, corporate structures, employment requirements, and recent legal and economic developments affecting investors. The publication forms part of Lex Mundi’s Country Guides series, a global collection of jurisdiction-specific reference materials prepared by member firms around the world. Together, these guides help companies evaluate opportunities, compare regulatory environments, and plan international business activities across multiple markets. The full Guide to Doing Business in Thailand 2026 is available through the button below.
July 14, 2026
Tilleke & Gibbins has contributed the Thailand and Vietnam chapters to Investigations in Southeast Asia, a comprehensive guide published by Drew Network Asia (DNA). The resource provides a practical overview of anticorruption laws, corporate investigations, and compliance frameworks across six key Southeast Asian jurisdictions. Designed for in-house counsel, compliance officers, and risk management professionals, the guide offers actionable insights for navigating complex cross-border regulatory challenges and establishing effective, regionally coordinated compliance and investigation strategies. The guide begins with a regional perspective on enforcement trends and cross-border cooperation initiatives. Jurisdiction-specific chapters follow a standardized structure—covering primary corruption offenses, enforcement authorities, corporate liability, investigation procedures and dawn raids, whistleblower protections, and recommended compliance measures. In addition to country-by-country analysis, the publication highlights best practices for conducting internal investigations, managing digital evidence, and handling parallel proceedings involving multiple regional or international regulators. The guide serves as a practical reference for organizations operating in Southeast Asia. Because legal and regulatory risks depend on specific industry sectors and operational contexts, readers seeking tailored advice are encouraged to contact the authors listed in each chapter. The full guide is available for download through the button below or directly from the DNA website.
June 29, 2026
Thailand’s cabinet has approved the draft Act on Liability for Defective Goods, commonly called Thailand’s “Lemon Law.” The Draft Act is currently pending consideration by Parliament. The draft law aims to strengthen buyers’ position in pursuing cases against sellers. While the Civil and Commercial Code offers provisions governing liability for defective goods, it is difficult in practice for buyers to successfully make a claim against sellers, particularly where defects are latent and not discoverable at the time of sale or delivery. By introducing product-specific rules and clearer remedies, the new law is intended to modernize Thailand’s consumer protection framework and align it more closely with international standards, and to help relieve the buyer’s burden of proof against the seller in product liability cases. If enacted, the draft act will take effect 180 days after publication in the Government Gazette, giving businesses a transition period to assess their compliance obligations. This article provides an overview of the key provisions of the draft act and highlights some practical considerations for businesses operating in Thailand. Scope and Key Definitions The draft act applies to sellers—defined as persons who sell goods in the ordinary course of business—and protects buyers, a term defined broadly to include not just the original purchaser but also transferees and successors in title. This expands the class of people who can bring claims. The law does not apply to used goods, live animals, or goods exempted by future ministerial regulation. It also leaves intact any separate warranties, promises, advertisements, or other guarantees a seller has given; those remain enforceable alongside the new statutory rights. General Liability for Defective Goods Sellers are liable for defects that exist at the time of delivery, regardless of whether the seller knew about them. Liability arises where a defect reduces: The benefit intended under
May 25, 2026
Thailand published new rules on May 1, 2026, establishing clear procedures for how the Anti-Money Laundering Office (AMLO) handles digital assets seized during criminal and money laundering investigations. Taking effect the following day, the Regulation of the Anti-Money Laundering Board on the Custody and Management of Seized or Frozen Assets (No. 3) B.E. 2569 applies to digital asset businesses, cryptocurrency holders, and anyone subject to asset seizure under Thailand’s anti-money laundering laws. For the first time, authorities now have a detailed roadmap for transferring seized digital property from private or foreign control into secure state custody. Digital asset businesses holding customer assets under investigation must be prepared to comply with these rules compelling repatriation of such assets in enforcement actions. Expanded Definition of Digital Assets The regulation defines digital assets to include not only those covered by Thailand’s existing digital asset business law but also any other property that can be stored using the same methods as digital assets. This broad formulation means the custody rules will apply to emerging blockchain-based assets and tokenized property that may not yet fall within the statutory definition of a digital asset business, giving authorities flexibility as the technology evolves. Mandatory Transfer to Domestic Custody When digital assets are held with service providers outside Thailand, AMLO will first attempt to transfer them to an account the office maintains with a licensed domestic digital asset business operator. If the domestic operator does not support that particular asset, the office will instead move the assets to its own cold wallet (offline, internet-isolated storage system). If neither option is feasible, the seizing official will report the situation to the Anti-Money Laundering Committee for alternative instructions. A similar hierarchy governs assets held in an accused party’s private wallet or by any third party that is not a

Awards & Rankings

May 11, 2026
Tilleke & Gibbins has continued to show excellent performance in the recently released Benchmark Litigation 2026 rankings for dispute resolution firms in the Asia-Pacific region. The rankings include two jurisdictions where Tilleke & Gibbins is active: Thailand and Vietnam. Firm Rankings A full summary of the firm’s rankings is provided below: Thailand Commercial & Transactions – Tier 1 Government & Regulatory – Tier 1 Labor & Employment – Tier 1 Intellectual Property – Tier 1 Trade & Customs – Tier 2 Vietnam Commercial & Transactions (Foreign Firms) – Tier 1 Intellectual Property (Foreign Firms) – Tier 1 Labor & Employment (International Firms) – Highly Recommended (top tier awarded in this category) White Collar Crime – Recommended (top tier awarded in this category) Energy & Construction (Foreign Firms) – Tier 2 International Arbitration – Tier 2 Individual Rankings The 2026 edition also recognizes 12 Tilleke & Gibbins lawyers in Thailand—more than any other firm in the jurisdiction—and four in Vietnam. Thailand Alongkorn Tongmee – Trade & Customs Chitchai Punsan – Commercial & Transactions Chusert Supasitthumrong – Labor & Employment John Frangos – Commercial & Transactions Noppramart Thammateeradaycho – Shipping Nuttaphol Arammuang – Intellectual Property Piyawat Vitooraporn – Commercial & Transactions Pongpalin Chantrapirom – Commercial & Transactions Suebsiri Taweepon – Intellectual Property Suruswadee Jaimsuwan – Commercial & Transactions Thawat Damsa-ard – Commercial & Transactions Tiziana Sucharitkul – Commercial & Transactions, Government & Regulatory Vietnam Duc Anh Tran – Commercial & Transactions Linh Duy Mai – Intellectual Property Loc Xuan Le – Intellectual Property Tu Anh Tran – Commercial & Transactions Benchmark Litigation’s annual research is based on interviews with dispute resolution specialists and clients, as well as analysis of recent casework and market developments. To view the full results, please visit the Benchmark Litigation websites for Thailand and Vietnam.

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