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 3, 2026
On March 16, 2026, Vietnam’s Ministry of Public Security released a draft version of a new Decree on the Prevention and Combating of Cybercrime and High-Tech Crime to replace the currently effective Decree 25/2014/ND-CP. In the draft, the ministry has proposed a comprehensive regulatory framework aimed at addressing violations occurring within the cybersecurity domain, including measures related to intellectual property. Acts of Online IP Infringement Article 9 of the draft decree notably introduces specific provisions addressing online intellectual property infringement, with detailed lists of acts considered to constitute infringement in the online environment. Copyright and related rights infringement includes: Uploading or sharing works, performances, sound recordings, video recordings, broadcasts, computer programs, software, research, documents, theses, or other intellectual creations on digital platforms without the consent of the rights holder. Unauthorized livestreaming of copyrighted television programs, sporting events, or artistic performances. Uploading, sharing, storing, transmitting, or providing links to infringing works or digital content via websites, social networks, applications, or digital platforms. Providing or using software, tools, devices, or access codes to circumvent technological protection measures or evade lawful control mechanisms implemented by rights holders. Using artificial intelligence (AI) tools to replicate the ideas or structure of another person’s work without significant new creativity or without proper attribution, thereby causing damage to the original author. Industrial property infringement includes: Manufacturing, trading, advertising, or distributing counterfeit goods bearing counterfeit trademarks, geographical indications, or industrial designs, as well as goods infringing industrial property rights through online platforms. Unauthorized registration, appropriation, or use of domain names, account names, or digital identifiers that create confusion regarding the rights holder or the origin of goods or services. Producing, using, or offering for sale products containing all or part of a patented invention via online platforms. Advertising or introducing products with technical features or characteristics identical
March 31, 2026
Vietnam’s most recent amendment of the Law on Intellectual Property (amended IP Law), passed by the National Assembly on December 10, 2025, and effective from April 1, 2026, represents one of the most significant updates to the IP Law in recent years. This amendment modernizes the IP framework, moving a step closer to international standards, while addressing the realities of Vietnam’s booming digital economy, e-commerce growth, and increasing foreign investment, which is crucial for Vietnam’s objective of complete economic transformation. For trademark practitioners, brand owners, and businesses, the changes are largely positive, as they promise faster processes, stronger enforcement tools—especially for online actions—and better commercialization options. However, they also introduce stricter requirements and a need for proactive preparation. Below are some of the most noteworthy changes in the amended IP Law related to trademarks. Significantly Shortened Timelines and Introduction of Fast-Track Examination The statutory timelines under the amended IP Law have been notably reduced: Substantive examination for trademarks is shortened from 9 months to 5 months (from the publication date). The publication period is shortened from 2 months to 1 month. A new fast-track mechanism allows substantive examination in as little as 3 months for qualifying applications (e.g., marks in actual use, facing infringement threats, or meeting government-specified criteria; details to be clarified in implementing regulations). The opposition period is shortened from 5 months to 3 months from publication. This is arguably the most welcome change. Vietnam’s IP Office has long faced criticism for lengthy backlogs, often stretching the trademark registration process to 18–24 months or more. The new timelines bring Vietnam closer to efficient systems. The fast-track option is particularly smart for high-value or urgent cases such as counterfeit threats on e-commerce platforms. However, careful preparation is mandatory for flawless applications from the start to maximize fast-track eligibility.
March 16, 2026
Indonesia’s Ministry of Law has introduced a new framework for patent applications that tightens filing requirements and introduces formal mechanisms for accelerated examination. Minister of Law Regulation No. 6 of 2026 on Patent Applications, which was issued on January 13, 2026, and took effect on February 23, 2026, serves as the implementing regulation for Law No. 65 of 2024 on Patents. It replaces the previous patent application framework (under Minister of Law and Human Rights Regulation No. 38 of 2018, as amended by Regulation No. 13 of 2021), which was considered no longer aligned with current legal, institutional, and technological developments. The regulation also reflects the institutional restructuring of the Ministry of Law and Human Rights into the Ministry of Law. Patent applications filed on or after February 23, 2026, must fully comply with the new regulation. Applications that were filed before this date will continue to be examined and processed under the previous regulation, pursuant to transitional provisions. Substantive Changes Definition of Invention The definition of “Invention” now explicitly includes systems, methods, and uses, in addition to products and processes. This expansion creates broader protection opportunities, particularly for software-enabled, digital, and method-based technologies, although it may also result in closer scrutiny during substantive examination. Excess Claims Fee Excess claims fees must now be paid at the time of filing. Failure to pay excess claims fees at filing results in the application being deemed withdrawn. There is no longer an option to defer payment to the substantive examination stage. This amendment forces applicants to face higher upfront costs. Patent claim strategy must be finalized prior to filing, reducing flexibility at later stages. Procedural and System Changes Fully Electronic Filing Patent applications must be filed electronically via the Directorate General of Intellectual Property (DGIP) online filing system. Assisted filings to
March 13, 2026
For decades, intellectual property rights holders seeking to eliminate counterfeit goods from the Thai market have relied primarily on criminal raid actions to seize infringing products and hold infringers accountable. The deterrent value of this approach is typically threefold: imposing criminal liability on infringers, removing counterfeit goods from circulation, and subjecting violators to imprisonment and fines. However, these outcomes often fall short of fulfilling brand owners’ broader objectives. In many cases, those prosecuted are merely staff or intermediaries rather than the principals orchestrating the infringing operations. Moreover, any fines imposed are remitted to the Thai government—not to the rights holders who have suffered commercial harm and invested substantial resources in investigation and coordination with law enforcement authorities. As in other jurisdictions worldwide, rights holders seeking monetary compensation for IP infringement in Thailand have traditionally pursued separate civil litigation. Before initiating such proceedings, a brand owner must gather sufficient evidence to establish both the infringement and the resulting damages. Notably, Thai law does not recognize punitive damages; courts award only actual damages proven by the claimant. In the absence of seized infringing goods, the damages awarded in such cases are typically minimal. This all leaves rights holders with limited recourse despite possibly having suffered significant commercial injury. In 2005, Thailand amended its Criminal Procedure Code to introduce Section 44/1, which enables rights holders to claim damages within criminal proceedings at the Intellectual Property and International Trade Court prior to the evidentiary hearing. In practice, this mechanism allows an injured party to submit a petition for civil damages directly within the criminal case initiated by the public prosecutor. Historically, rights holders in Thailand have been reluctant to use Section 44/1 because the compensation awarded by courts was often insufficient to justify the effort. However, recent years have seen a notable shift