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

March 15, 2016

Recognition of Well-Known Marks in Thailand

Managing Intellectual Property

After Thailand’s Department of Intellectual Property (DIP) recently announced that it would abolish the recordation system for well-known trademarks, many questions about the status of well-known marks remained unanswered. This article will discuss whether well-known marks are still protected in Thailand, who has authority to determine whether a mark is well known, and whether a similar recordation system will be reestablished in the future.

Abolishment of Well-Known Marks Recordation System

The Notification of Cancellation of Rules of the Department of Intellectual Property Regarding Recordation of Well-Known Marks B.E. 2548 (2005), issued on September 9, 2015, stated that the DIP’s recordation system for well-known trademarks was abolished because the Board of Trademarks already has criteria to determine whether a mark is well known. For the sake of harmonization, the DIP cancelled its recordation system.

Protection of Well-Known Marks

As Thailand is a member of the Paris Convention and the TRIPS Agreement, protection of well-known marks still exists in Thailand despite the recordation system being abolished. Under Section 8(10) of the Trademark Act, a mark which is identical or very similar to a well-known mark to the extent that it may cause confusion among the public as to the owner or origin of the goods is not registrable.

According to the Ministerial Notification regarding Rules on Determination of Well-Known Marks, dated September 21, 2004 (Ministerial Notification)—which is applicable to all government organizations, from the DIP to the Supreme Court—the following criteria should be used to determine whether a mark is well known:

  • The mark has been used on goods or services by way of distribution, or has been used, advertised, or used by other means in the usual manner and in good faith;
  • The mark has been widely used, whether in Thailand or abroad, in the usual manner and in good faith to the extent that it is well known among the general public or those in the relevant industry in Thailand;
  • The mark has been used to the extent that its reputation for quality is generally accepted among consumers; and
  • Such use is done whether by the applicant or the applicant’s authorized representative or licensee, and whether locally or abroad.

Current System

In the absence of the previously existing recordation system, the following authorities can now determine whether a mark is well known:

Trademark Registrars.  At the examination stage, trademark registrars have a duty to reject the registration of a mark which is identical or similar to a well-known mark and may cause confusion among the general public as to the owner or origin of the goods.

Board of Trademarks.  The Board of Trademarks, which acts as an appeal authority for decisions of the registrars, still has the authority to decide whether a mark is well known. If a case is appealed to the Board of Trademarks, the applicant or opposer may argue that its mark is well known. The Board of Trademarks will then make a decision on the well-known status of the mark in accordance with the Ministerial Notification, taking into account factors such as acknowledgement of the public in Thailand; the amount of sales or revenue generated by the mark; the market share of the applicant’s business; and so on.

The applicant or opposer should submit evidence in support of these factors, such as magazines, product samples, invoices, bills of lading, advertisements, trademark registration certificates, awards, judgments with favorable decisions, etc. In Thailand’s civil law system, however, court judgments are merely persuasive and do not hold binding precedence.

Courts.  The Intellectual Property and International Trade Court (IP&IT Court) and the Supreme Court can also make decisions on the well-known status of marks based on the Ministerial Notification. According to Supreme Court Decision No. 6113/2555, recordation is not mandatory. The fact that the opposer did not file a recordation was not a significant reason to decide that the mark was not well-known. It was determined that all facts must be considered in accordance with the Ministerial Notification, such as evidence proving the well-known status of the mark.

There is currently no indication that a recordation system for well-known marks will be re-established in the future. A single committee which is authorized to make a binding decision on whether a mark is well known would be welcomed, because multiple authorities issuing nonbinding decisions can be burdensome to trademark owners, who need to prove their mark’s well-known status at every different stage and in every similar case. In the future, if a system to record well-known marks is established which binds all relevant government authorities, owners of well-known trademarks will benefit tremendously because it will reduce costs and time to prove that a mark is well known.

RELATED INSIGHTS​ 

April 30, 2026
Vietnam’s Decree No. 134/2026/ND‑CP, which took effect on 9 April 2026, plays an important role in detailing and implementing Vietnam’s Intellectual Property (IP) Law in the context of rapid digital transformation and the growing application of artificial intelligence (AI). The new decree provides comprehensive guidance on the application of copyright and related‑rights regulations, addressing key issues such as authorship, ownership, statutory exceptions and limitations, registration procedures, and enforcement mechanisms. Through these measures, Decree 134 seeks to achieve an appropriate balance between safeguarding the legitimate interests of rightsholders and fostering innovation, research, and technological advancement, thereby strengthening the state’s framework for the effective management, protection, and exploitation of intellectual property in the digital and AI‑driven environment. Some notable aspects of Decree 134 are discussed below. Copyright for AI-Created Works Decree 134 provides important guidance on the determination of copyright and related rights in works created with the assistance of AI. Article 5a reaffirms the principle that human creativity remains central to copyright protection, clarifying that copyright or related rights arise only where a human makes a substantial and decisive intellectual contribution, exercises effective control over the creative outcome, and assumes responsibility for the content and its legality. At the same time, the provision confirms that AI is regarded solely as a technological tool rather than a rights‑holding subject, thus ensuring consistency with the fundamental concepts of authorship and ownership under the IP Law. By introducing requirements on transparency, proof of human contribution, and compliance with AI‑specific labelling and technical marking obligations, Decree 134 establishes a clear and enforceable legal framework for the responsible use of AI in creative activities. Lawful Use of Copyrighted Texts and Data Article 37a of Decree 134 sets out the specific conditions under which copyrighted texts and data may be lawfully used for scientific research, experimentation,
April 29, 2026
Across the region, local brands have become key drivers of economic growth, cultural identity, and innovation, and Myanmar is no exception. From traditional products and creative industries to modern startups and small and medium‑sized enterprises (SMEs), Myanmar’s local brands are increasingly shaping domestic markets. However, as local brands grow, they also face higher risks of imitation, misuse, and unfair competition. In this context, protecting brand identity, creativity, and innovation through proper intellectual property (IP) strategies is essential to ensure that Myanmar’s homegrown businesses can grow sustainably, compete confidently, and retain the value of what they create. The Key IP Laws for Local Brands In 2019, Myanmar enacted a comprehensive suite of four IP laws, aligning the nation’s IP enforcement framework with international standards. Trademark Law 2019: This law introduced the “first-to-file” system into the country, with trademark rights primarily obtained through registration with the Intellectual Property Department (IPD). Trademarks protect brand names, logos, and other signs that distinguish goods or services. Registration grants the exclusive rights to use the mark and to prevent others from using identical or confusingly similar marks. Each registration lasts for 10 years from the filing date and can be renewed for subsequent 10-year periods. Copyright Law 2019: Copyright, which arises automatically upon creation, protects literary, artistic, musical, and audiovisual works, including software, advertisements, artwork, and social media content. While registration with the IPD is not mandatory under this law, it can be helpful for establishing evidence and supporting any future enforcement. The terms of protection for economic rights associated with copyrights vary depending on the type of work involved. In contrast, the protection for moral rights lasts indefinitely—continuing even after the author’s death. Industrial Design Law 2019: Under this law, any industrial design that is new and independently created can be filed with the
April 21, 2026
Vietnam continues to refine its intellectual property framework to align with the 2025 amendments to the Law on Intellectual Property (IP Law). On March 31, 2026, the government issued Decree 100/2026/ND-CP (Decree 100), which substantially amends Decree 65/2023/ND-CP detailing the implementation of the IP Law (Decree 65). On the same day, the Ministry of Science and Technology released Circular 10/2026/TT-BKHCN (Circular 10), providing detailed procedural guidance and new forms. Both instruments took effect on April 1, 2026, along with the amended IP Law. While the updates touch on every IP right, trademark owners and brand strategists will find several practical and forward-looking changes that directly affect filing strategy, examination timelines, portfolio management, and enforcement readiness. 1. Fast-Track Substantive Examination for Eligible Applications One of the most business-friendly innovations is the new fast-track substantive examination pathway for applications meeting specified eligibility criteria. Successful fast-track applications enjoy a shortened substantive examination period of three months. This offers a significant competitive edge for tech-driven or regulated-sector brands. If the mark is identical or similar to a mark in another person’s trademark application with an earlier filing date in the case of a priority application that has not yet been processed, the fast-track process will return to the ordinary process. However, the law does not touch on cases where marks under fast-track examination face office action due to other reasons (i.e. lack of distinctiveness, confusingly similar to others’ copyright, trade name, industrial design, etc.) 2. AI-Generated Trademarks Receive Clear Protection Pathway Decree 100 explicitly addresses the use of artificial intelligence (AI) in IP creation, amending Article 10a of Decree 65 to confirm that trademarks created with AI systems are fully protectable, provided they meet the standard requirements of registration. Trademarks face no additional “human authorship” hurdle (unlike patents or industrial designs). Brand owners
April 20, 2026
Myanmar’s industrial design registration regime has been steadily gaining momentum since the country officially began accepting applications under the Industrial Design Law of 2019. The Industrial Design Division of Myanmar’s Intellectual Property Department (IPD) has actively advanced examination and registration procedures, and as of March 2026, approximately 300 industrial design applications have been published in the IPD’s publicly accessible database—a meaningful milestone in the development of Myanmar’s emerging intellectual property framework. This figure reflects only published applications; additional filings remain pending and will be published after the conclusion of ongoing examination. Filing Requirements in Practice Compliance with a defined set of mandatory requirements is the foundation for filing a valid design application. These mandatory particulars must be provided at the time of filing in order to establish a filing date. These include the applicant’s and creator’s identifying details, a notarized appointment of representative form, the Locarno Classification of the associated product, and a set of graphic representations of the design across multiple standard views. Applicants must also provide a written description of the design and, where applicable, information relating to any priority claim or request for deferred publication. Filing fees are payable at the time of submission. Beyond these core requirements, applicants typically need to provide supplementary documentation, either at the time of filing or in response to a formality examination. This may include evidence of the applicant’s legal entitlement to the design—particularly where the applicant and creator are different parties—as well as supporting corporate and authorization documents. Where priority rights are claimed, the relevant documents must generally be submitted within three months of the Myanmar filing date, with certified English translations required for any non-English priority applications. The supplementary requirements may vary depending on the nature of the application and the examiner’s requests during the formality examination process.