You are using an outdated browser and your browsing experience will not be optimal. Please update to the latest version of Microsoft Edge, Google Chrome or Mozilla Firefox. Install Microsoft Edge

July 21, 2025

Thai Court Finds Acquired Trademark Distinctiveness through Use in Rare Decision

World Trademark Review

Distinctiveness is a fundamental requirement for a trademark’s registration and protection under Thai law. The Thai courts typically assess distinctiveness based on a mark’s inherent characteristics rather than its use, as proving acquired distinctiveness through use requires substantial evidence, including the duration of use, extent of distribution and promotional efforts.

However, the Intellectual Property and International Trade Court (IP & IT Court) has recently ruled that the figurative mark WEPLAY had acquired distinctiveness through use – an uncommon ruling under Thai trademark law. Subsequently, the Court of Appeal for Specialised Cases affirmed the mark’s inherent distinctiveness based on a holistic assessment of its components.

This article discusses the criteria for proving both inherent and acquired distinctiveness, offering examples from both courts to provide valuable insights into case preparation and understanding of how the courts assess distinctiveness.

Background

In 2017 the plaintiff filed a trademark application for the mark depicted below for goods in Class 28, including toy building blocks:

The registrar rejected the application on the grounds of non-distinctiveness under Section 7 of the Trademark Act. The plaintiff appealed to the Board of Trademarks, which considered that, when the term ‘weplay’ is used for goods in Class 28, it is descriptive of the nature of the goods applied for as “playthings”. Therefore, ‘weplay’ was deemed nondistinctive under Section 7, Paragraph 2(2) of the Trademark Act.

IP & IT Court decision

In 2024 the IP & IT Court ruled that the term ‘weplay’ is not a coined or invented word; instead, it is a combination of ‘we’ and ‘play’, conveying the meaning of ‘we play’. When the term is used for goods in Class 28, it describes the nature of the goods as “playthings”. Consequently, the mark was deemed non-distinctive.

However, the court considered the evidence presented by the plaintiff, which showed that the latter had been selling the product in Thailand for over 10 years. This evidence, including invoices, online and print catalogue advertisements, as well as other documentation, confirmed the continuous use of the trademark alongside widespread product distribution and advertising in Thailand for over 10 years. This evidence conclusively established that goods bearing the mark had been extensively sold, distributed and advertised; therefore, the mark had acquired distinctiveness through continuous use under Section 7, Paragraph 3 of the Act. The IP & IT Court, as the court of first instance, thus adjudicated that the mark was registrable.

Both parties appealed.

Appeal decision

On 26 February 2025 the Court of Appeal for Specialised Cases held that the mark at issue consisted of two key elements:

  1. the word ‘weplay’; and
  2. a rounded-shaped device with an unusual combination of colours.

The term ‘weplay’ was found to be suggestive rather than descriptive, requiring a consumer’s interpretation to associate it with the goods. When combined with the graphic element, the mark as a whole was distinctive, enabling consumers to identify and

differentiate the goods. Accordingly, the trademark meets the distinctiveness criteria under Section 7, Paragraph 1, and Section 7, Paragraph 2(8) of the act.

The appellate court thus concluded that the mark was inherently distinctive.

Comment

The case highlights the adoption by the Thai courts of a holistic approach, contributing to a more dynamic framework for assessing trademark distinctiveness. It also shows a growing tendency to consider acquired distinctiveness through use, making it a more flexible factor in trademark litigation.

 

This article first appeared in WTR Daily, part of World Trademark Review, in June 2025. For further information, please go to www.worldtrademarkreview.com.

RELATED INSIGHTS​ 

February 25, 2026
Tilleke & Gibbins has updated the Vietnam chapter in the newly released Licensing 2026 guide, published by Lexology Panoramic. The comparative guide provides companies and other interested readers with information on licensing law and practice in various countries around the world. Licensing 2026 provides detailed information on the following topics: Restrictions, laws and licensing arrangements Intellectual property issues: Paris Convention for the Protection of Industrial Property, contesting the validity of licensor’s IP rights, invalidity and expiry of IP rights, security interests, proceedings against third parties, sublicensing, jointly owned IP, first to file, scope of patent protection, trade secrets, copyright Software licensing: Perpetual licensing, legal requirements, user restrictions Royalties and payments, currency conversion, and taxes: Relevant legislation, restrictions, taxation of foreign licensors Competition law issues: Restrictions on trade, legal restrictions, and IP-related court rulings Indemnification, disclaimers, and damages: Prevalence and enforceability of indemnity provisions and contractual waivers of damages Termination: Right to terminate, impact of termination Bankruptcy: Impact of licensee or licensor bankruptcy Dispute resolution: Governing law, arbitration, enforceability, injunctive relief, contractual waivers The Vietnam chapter is available below as a PDF. Readers can gain 30 days of complementary access to the full Licensing 2026 guide and the rest of Lexology Panoramic’s varied offerings through this link.
January 30, 2026
On December 26, 2025, the government of Vietnam promulgated Decree No. 341/2025/ND-CP on administrative sanctions for violations of copyright and related rights (Decree 341), with an effective date of February 15, 2026. The new decree replaces Decree No. 131/2013/ND-CP, as amended, and represents the first comprehensive revision of the administrative enforcement framework in this area in eight years. Legislative Context and Objectives Decree 341 reflects Vietnam’s evolving copyright and related-rights framework, particularly in light of the country’s commitments under bilateral, regional, and multilateral treaties governing the digital environment. While the decree retains a number of provisions from the previous regime, it also introduces significant amendments to infringing acts, penalty thresholds, remedial measures, and enforcement procedures. The primary objectives of the new decree are to (i) enhance the deterrent effect of administrative sanctions; (ii) harmonize sanctions with the 2025 amendments to the Law on Intellectual Property and criminal law principles; and (iii) address enforcement challenges arising from online and cross-border exploitation of copyrighted works. Expanded Scope of Sanctionable Subjects Under Decree 341, administrative sanctions apply not only to Vietnamese entities committing infringing acts within Vietnam, but also to Vietnamese and foreign entities that commit acts of infringement on the internet where the protected content is accessed, consumed, or exploited by users in Vietnam. This expansion reflects the realities of cross-border digital exploitation. However, the decree does not yet provide precise definitions of key terms such as “users” or “consumers” of digital content in Vietnam, which may require further regulatory clarification. Monetary Penalties and Penalty Structure The statutory maximum fines remain unchanged, at VND 250 million for individuals and VND 500 million for organizations, but the penalty framework is substantially restructured. Fines are now calibrated based on three core criteria: (i) the amount of illegal profit obtained; (ii) the level of
January 30, 2026
Vietnam’s Intellectual Property (IP) Law, despite being amended in 2022, underwent another significant revision at the end of 2025. The latest amendment aimed to address five major policy objectives set by the Vietnamese government, including promoting innovation, digital transformation, and international integration. Among the most notable changes in the 2025 IP Law, which takes effect on 1 April 2026, is the expansion of industrial design protection under Article 4.13. The revised definition now includes partial designs and intangible designs, marking a transformative shift in Vietnam’s industrial design regime. This change has particularly significant implications on designs classified under Class 32 of the Locarno Classification—which covers graphic designs, logos, ornamentation, surface patterns, arrangements, and other intangible products. These designs, previously excluded from protection in Vietnam, are now recognized under the new legal framework. Background: Status of Class 32 Designs Before 2026 Th Intellectual Property Office of Vietnam currently applies the 13th edition of the Locarno Classification for industrial design filings. However, not all classes in this system have historically been eligible for protection. Under the 2022 IP Law, Class 32 designs were explicitly excluded based on the following legal grounds: Definition under Article 4.13 (2022 IP Law): “An industrial design is the external appearance of a product or a component for assembly into a complex product, expressed in shapes, lines, colors, or a combination thereof, and visible during the exploitation of the product’s utility or the complex product.” Product requirements under Article 21.2 of Circular 23/2023/TT-BKHCN: A product is defined as an object, a tool, a device, or means, manufactured by industrial or handicraft methods, with clear structure and function. A component for assembly into a complex product must be capable of independent circulation and detachable from the complex product. Based on these definitions, Class 32 designs, such as graphical
December 30, 2025
The Intellectual Property Office of Vietnam (IP Office), with support from the Japan International Cooperation Agency (JICA), is drafting additional annexes to its Guidelines for Patent Examination, focusing on the examination of patent applications in the pharmaceutical and biotechnology sectors. The new annexes are expected to be officially issued in early 2026 as Annexes III and IV, following the successful issuance in 2023 of Annexes I and II addressing computer program-related inventions. The IP Office recently organized a seminar to gather feedback on the draft annexes from intellectual property representatives, academic institutions, research institutes, and other interested parties, emphasizing its intention to receive further constructive opinions to refine the guidelines for pharmaceuticals and biotechnology. Why These Guidelines Matter Patent examination in Vietnam has traditionally relied on the Guidelines for Patent Examination issued under Decision No. 487/QD-SHTT (2010), recently supplemented by Annexes I and II. While these documents provide a solid foundation, they do not fully address practical challenges in examining pharmaceutical and biotech inventions, particularly issues related to clarity, sufficiency of disclosure, enablement, features of function and utility, combination therapies, and inventions involving artificial intelligence (AI) applications in these fields. Annexes III and IV aim to close these gaps by introducing structured principles and illustrative examples. Guidance on Patent Specification Requirements Annex III provides detailed guidance on the requirements for patent specifications in pharmaceuticals and biotechnology, covering two main parts: Part A addresses sufficiency of disclosure, clarity of specifications, and consistency between claims and descriptions. Part B covers inventions related to Markush-type compounds, claims containing exclusion statements (disclaimers), and additional experimental data submitted during examination. The Guidelines outline specific disclosure requirements for subject matters such as compounds, formulations, pharmaceutical compositions, genes, polypeptides, proteins, vectors, transgenic organisms, modified organisms, and hybrid cells. Annex III emphasizes that disclaimers are not accepted