Similar to other types of corporate disputes, tax-related conflicts often begin with an earnest attempt to resolve matters outside the courtroom. The prospect of engaging in tax litigation can be daunting, given the potential strain on commercial relationships, the legal expenses, and the uncertainty surrounding its resolution. However, there are instances when tax litigation becomes the sole avenue for seeking redress. For individuals and entities contemplating the pursuit of tax-related legal remedies, the Thai legal system offers an accessible, impartial, and equitable platform for dispute resolution. Tilleke & Gibbins’ latest update to Tax Litigation in Thailand provides an outline for navigating tax-related disputes within the Thai legal framework. It aims to equip readers with a fundamental understanding of procedures and practices within the Thai tax litigation landscape. The full guide is available through the button below.

Cross-border disputes often end with a judgment or arbitral award issued outside Thailand. When a party has assets or operations in Thailand, the key question becomes simple: will a Thai court enforce it? Thai law treats foreign court judgments and foreign arbitral awards very differently. Foreign court judgments cannot be recognized or enforced directly and must effectively be re-litigated. Foreign arbitral awards, however, benefit from a clear recognition and enforcement process under the New York Convention and Thailand’s Arbitration Act. Thailand’s Overall Approach Thailand does not have a general law or treaty that allows automatic enforcement of foreign court judgments. To rely on a foreign judgment, a party must initiate a new lawsuit in a Thai court, plead the claim under Thai law, and prove the case again. The foreign judgment can be used as evidence, but it is not binding, and the Thai court retains full discretion to reassess both the facts and the law. Foreign arbitral awards are treated more favorably. Thailand is a longstanding member of the New York Convention and has implemented it through the Arbitration Act. The act provides a straightforward process for asking a Thai court to recognize and enforce a qualifying award, without retrying the dispute, and subject only to limited refusal grounds. Foreign Court Judgments: Persuasive but Not Binding Although Thai courts do not recognize or enforce foreign court judgments, they may rely on them as persuasive evidence under certain conditions. Courts generally give more weight to judgments that are final on the merits, issued by a court with proper jurisdiction, and reached after proper notice and an opportunity for the defendant to be heard. Default judgments or rulings based primarily on procedural grounds carry less weight, and the ultimate relevance and weight are left to the court’s discretion. In practical

One morning, a California-based company mapping its Southeast Asia rollout opened an unexpected cease-and-desist letter from a Vietnamese IP firm. To the company’s surprise, the letter asserted that a local client already owned the company’s brand in Vietnam and threatened legal action. This is not an isolated incident. In another recent matter in the sports industry, a squatter demanded at least USD 48,000 from our client to “resolve” a similar conflict. For brands entering Vietnam or expanding distribution there, these tactics can create acute risk at precisely the point at which market momentum is building. Vietnam’s rapid economic growth and deepening integration into global trade have made it an increasingly attractive destination for multinational brands. Those same dynamics have intensified a longstanding issue: trademark squatting. Vietnam has modernized its IP framework over the past decade, but its strict first-to-file trademark system continues to incentivize opportunistic filings by parties with no legitimate interest in a mark. As more foreign brands build their reputation abroad before turning to Vietnam, squatters remain alert to timing gaps and enforcement frictions. The First-to-File System: Advantages and Vulnerabilities Vietnam adheres closely to the first-to-file principle under its Law on Intellectual Property. In practice, exclusive trademark rights belong to whoever submits the earliest valid application to the Vietnam Intellectual Property Office, regardless of prior use in Vietnam. This approach offers administrative clarity and reduces evidentiary burdens compared to use-based jurisdictions. Yet it also creates fertile conditions for squatting. Bad-faith actors regularly monitor foreign markets, identify brands gaining traction, and move quickly to register those marks domestically, often long before the genuine owner enters the market or prioritizes local filings. By the time the true brand seeks protection, the squatter’s application (or registration) stands as a legal obstacle, pushing businesses toward costly oppositions, cancellations, or uncomfortable negotiations

Attorneys from Tilleke & Gibbins’ Bangkok office have contributed the Thailand chapter to Litigation 2026, published by Chambers and Partners. Litigation 2026 provides an overview of litigation procedures and practices across numerous jurisdictions. The guide is a key reference for businesses, in-house counsel, and legal professionals seeking to understand and compare litigation frameworks around the world. The Thailand chapter delivers analysis of 14 core areas of litigation, including: General characteristics of the legal system and court structure Litigation funding options and requirements Procedures for initiating lawsuits and pre-trial steps Discovery processes and injunctive relief Trial procedures and rules on evidence Settlement mechanisms and enforcement Damages and judgment considerations Appeal processes and cost issues Alternative dispute resolution and arbitration Developments and future outlook for dispute resolution in Thailand Each section offers practical guidance on navigating Thailand’s litigation landscape, providing useful context for international businesses and legal practitioners involved in dispute resolution matters. Chambers and Partners’ Global Practice Guides deliver expert commentary on key practice areas across jurisdictions, allowing readers to compare legislation, procedures, and practical considerations relevant to business operations. The Thailand chapter can be downloaded through the button below, and the full Litigation 2026 guide is available free of charge on the Chambers and Partners website.