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

December 7, 2020

Canceling a Thai Trademark Registered in Bad Faith

Informed Counsel

It is not unusual for brand owners to take a closer look at the Thai market for their products only to find that a third party has already applied for registration of their trademark. Brand owners who face this situation usually become aware of it when they consider entering the Thai market after their brand has already become famous and successful elsewhere. Well-known marks are often usurped when a bad-faith applicant intentionally registers a trademark to benefit from the goodwill and reputation associated with that trademark. As Thailand is a first-to-file system for trademark registration, supplying proof of intention to use is not a requirement for registration. Thus, if a legitimate brand owner has never registered their trademark in Thailand, a bad-faith applicant might take advantage of this opening to file another person’s trademark in his or her own name.

Overlooking the early securing of trademark rights in Thailand can lead to complex problems, even when brand owners have a relationship with a distributor in Thailand. The problem usually comes to light when a brand owner seeks to end their relationship with one distributor and start a business relationship with a new partner. In some cases, brand owners are blindsided when they learn that the previous distributor had surreptitiously filed for registration of the trademark in the distributor’s own name without alerting them—meaning that the former distributor now holds exclusive rights over the use of the trademark in Thailand.

After finding out about a bad-faith trademark registration, many brand owners seek to cancel the Thai registration of the trademark to which they have better rights than the registrant. The Trademark Act provides several mechanisms that brand owners can rely on to pursue cancellation of trademark’s registration; however, none of the law’s provisions clearly state the possibility of canceling a trademark registered in bad faith. Below, we explore two possible  methods for cancellation of a bad-faith registration, depending on which authority considers the matter.

Cancellation with Board of Trademarks

A cancellation petition may be filed with the Board of Trademarks through one of two routes—one for “interested parties” (that is, affected parties, such as a legitimate brand owner) and one for anyone. While neither route is based on legal provisions clearly stating how to cancel a registration based on a bad-faith argument, they are viable possibilities for those seeking cancellation, with different criteria and requirements pertaining to each route.

If an interested party files a cancellation petition with the Board of Trademarks to challenge the mark’s general registrability, the board will re-examine the distinctiveness, similarity, and legality grounds under section 61 of the Trademark Act. As a legitimate brand owner usually qualifies as an interested party, that owner can file a petition to cancel the mark on grounds that it is identical or confusingly similar to the legitimate owner’s trademark, which was already registered outside of Thailand, and should therefore not have been filed.

A person not claiming interested-party status who wishes to file a cancellation petition must be of the opinion that the registered trademark is contrary to public order, morality, or public policy (Trademark Act, Section 62). As a bad-faith filing may be interpreted as contrary to these things, it should qualify for cancellation.

However, proving the bad faith of the registrant to the Board of Trademarks can be difficult, since there are no witness hearings. The Board of Trademarks considers only documentary evidence, which usually does not clearly reveal the registrant’s intention, whether the registrant possessed knowledge of the original brand, or whether they intentionally copied the original brand to be registered as their own.

Cancellation with the IP&IT Court

Better right grounds—that is, assertions that the genuine brand owner has a more legitimate right to use their own trademark than the registrant in Thailand does—are typically the most relevant legal grounds for cancellation of a trademark registered in bad faith. Section 67 of the Trademark Act provides that a legitimate owner may file a lawsuit for cancellation of a bad-faith trademark registration on better right grounds in the Central Intellectual Property and International Trade Court (IP&IT Court), provided that it has been registered for less than five years.

If a trademark has been registered for more than five years, it cannot be cancelled. This has already been challenged in court, with at least one brand owner arguing that the five-year limitation should only apply if the trademark in question was filed in good faith, and that brand owners should be able to cancel trademarks registered in bad faith even after the five-year period has expired. However, the Supreme Court rejected the argument and ruled that, as the five-year time period had expired, the trademark registration in that case could not be cancelled despite the brand owner having a better right to it.

Proving the bad faith of the registrant can be easier and have higher chances of success in the IP&IT Court, so most legitimate brand owners opt to do this rather than file a cancellation against a bad-faith registration through the Board of Trademarks. Again, however, if the trademark registration has been active for longer than five years, the IP&IT Court will reject the request.

Canceling Long-Standing Bad-Faith Registrations

Despite this conservative approach, it can still be possible for a legitimate trademark owner to cancel a bad-faith registration that has been active longer than five years, especially when there is a precedent judgment ruling  that the trademark was filed in bad faith. In this case, the cancellation petition—along with evidence of the prior ruling—should be filed with the Board of Trademarks, which would consider the evidence and may cancel the trademark.

Tilleke & Gibbins has had a great deal of success with this approach, including in a recent case on behalf of a leading fertilizer company, which had filed a cancellation petition with the Board of Trademarks. Since there was a precedent judgment ruling that the disputed trademark was filed in bad faith, the Board of Trademarks ordered the cancellation of the trademark. The owner of the cancelled trademark then appealed the decision to the IP&IT Court, which agreed that the trademark was filed in bad faith, dismissed the case, and confirmed that the Board of Trademarks had correctly ordered the cancellation. The case was further appealed to the Specialized Appeal Court, which affirmed the IP&IT Court’s judgment, reasoning that the Board of Trademarks remains empowered to cancel a registered trademark under Sections 61 and 62 of the Thai Trademark Act, even if the bad-faith trademark has been in force for more than five years.

Selecting a Strategy

In summary, the legitimate owner of a trademark has a number of options for seeking cancellation of a trademark registered in bad faith. For marks that have been registered for less than five years, brand owners can file a petition with either the Board of Trademarks or the IP&IT Court. If a bad-faith trademark registration has been active for longer than five years, brand owners may still be able to file a cancellation petition with the Board of Trademarks. Withthese options, brand owners should be in a favorable position if they find that their intellectual property has been infringed upon by a bad-faith trademark registration in Thailand. At that point, it will be important to assess the circumstances of the case and develop a comprehensive legal strategy accordingly to regain full exclusive rights over the trademark.

RELATED INSIGHTS​ 

September 14, 2026
Myanmar’s first-to-file trademark registration regime under the Trademark Law 2019—which became fully operational in April 2023—provides mark owners with enhanced legal protection compared with the country’s former system. Correspondingly, the current system imposes more rigorous statutory requirements for obtaining, maintaining, and enforcing rights in marks. In this first-to-file trademark registration system, however, evidence of use remains particularly significant, as it may establish acquired distinctiveness, support a claim that a mark is well-known, and strengthen the owner’s position in both registration and enforcement proceedings. Accordingly, it can be said that this framework is underpinned by three key concepts: distinctiveness, well-known status, and, importantly, use of the trademark. Trademark Distinctiveness Under the Trademark Law, signs that lack distinctiveness are generally ineligible for mark protection. These signs include generic terms, basic shapes, unstylized single letters or numerals, and signs that merely describe the kind, quality, quantity, intended purpose, value, geographical origin, production time, or other characteristics of the relevant goods or services. However, a mark that would otherwise be refused on distinctiveness or descriptiveness grounds may be registrable if it has acquired distinctiveness through its use prior to the filing date. To show this, the applicant must demonstrate that the mark became distinctive to relevant consumers through continuous, exclusive, and good-faith use in trade within Myanmar. The burden of proving acquired distinctiveness rests with the mark owner. Accordingly, sufficient evidence demonstrating both use of the mark and the level of consumer recognition attained should be prepared in advance. Well-Known Mark Criteria Myanmar’s Trademark Rules, which govern the substantive examination of mark registration applications, establish criteria for determining well-known marks, aligned with international standards. Where an applicant claims well-known status—whether to overcome a refusal on relative grounds or to oppose a third party’s registration—the registrar will assess the claim based on the following
September 14, 2026
On August 23, 2026, Vietnam’s National Assembly passed Law No. 11/2026/QH16, amending the country’s Customs Law with effect from March 1, 2027. The amendments represent a substantial reform of Vietnam’s customs-based intellectual property enforcement regime. The reforms come amid considerable external pressure. In its 2026 Special 301 review, the US Trade Representative (USTR) designated Vietnam a “priority foreign country,” citing widespread counterfeiting, weak border enforcement, limited ex officio customs powers, and the absence of controls over goods in transit. Vietnam’s legislative response signals a commitment to bringing its border enforcement practices into line with international expectations. For IP rights holders operating in or through Vietnam, the amended law introduces several tools that substantially strengthen enforcement options at the border. Closing the Transit Gap One of the most consequential amendments is the extension of IP-related customs enforcement to goods in transit. Previously, Vietnam’s customs regime applied IP controls only to goods being imported or exported, a gap the USTR had specifically identified as enabling infringing goods to pass through Vietnamese ports with impunity. Vietnam’s geographic position as a logistics hub for Southeast Asia means that substantial volumes of goods transit its ports and free-trade zones. Extending enforcement to cover these shipments brings Vietnam closer to the standard set by the EU’s customs enforcement regulation and addresses a longstanding concern of multinational brand owners whose goods are frequently counterfeited in the region. Strengthened Suspension and Ex Officio Powers The amended law introduces a dual-track suspension mechanism (Article 73(2)). Customs authorities will suspend clearance upon request by an IP rights holder (or authorized representative) who provides evidence of IP ownership, evidence of infringement, and a financial guarantee. Customs can now proactively suspend clearance on an ex officio basis if, during inspection and monitoring, they discover “clear grounds” to suspect that imported, exported,
September 7, 2026
Indonesia’s Constitutional Court (Mahkamah Konstitusi) has reinstated a key provision limiting pharmaceutical patent protection, signaling a renewed commitment to balancing patent rights with public access to medicines. In its ruling to Case No. 255/PUU-XXIII/2025, the court partially granted a petition for judicial review of Law No. 65 of 2024, which had amended the country’s Patent Law, and ordered the restoration of a provision that had excluded certain pharmaceutical inventions from patentability. The decision took effect immediately upon its pronouncement at the court’s plenary session on August 28, 2026. Background The petition challenged the removal of article 4(f) from Law No. 13 of 2016 concerning Patents (Patent Law), as amended by Law No. 65 of 2024. Article 4(f) had excluded from patentability certain inventions relating to new uses of known substances. The petitioners argued that removing this provision would open the door to patent protection for second medical use inventions and facilitate patent evergreening—practices that can extend exclusivity periods, delay generic market entry, and reduce public access to affordable medicines. The petitioners included several patient advocacy and public-interest organizations: the Indonesian Dialysis Patients Community Association, the Indonesian Association of Drug Abuse Victims (PKNI), the Indonesian Pulmonary Hypertension Foundation (YHPI), the Rekat Peduli Indonesia Foundation, and the Indonesian Positive Women’s Association (IPPI), along with the Indonesia for Global Justice Association and four individual petitioners. The petitioners also challenged the constitutionality of the phrase “interested party” in article 70(1) of the Patent Law, arguing that it should be construed expressly to clarify who has standing to appeal a decision to grant a patent before the Board of Patent Appeal, and to allow a broader range of parties—such as patent holders, licensees, consumer organizations, prosecutors, aggrieved third parties, and others who may suffer direct or indirect harm from the grant of a patent—to
September 2, 2026
Thailand and China have a longstanding and significant trade relationship, which increasingly extends to e-commerce and digitally enabled supply chains. While these channels create new opportunities for businesses to reach consumers across borders, their growth also brings greater exposure to intellectual property (IP) infringement across jurisdictions and online platforms. Effective cooperation between the two countries’ enforcement authorities has therefore become increasingly important. To strengthen cooperation in this area, Thailand and China signed a memorandum of understanding (MOU) on IP enforcement in Beijing on July 20, 2026, during the Thai prime minister’s official visit to China. Officially titled “Memorandum of Understanding Between the State Administration for Market Regulation of the People’s Republic of China and the Ministry of Commerce of the Kingdom of Thailand on Cooperation in the Field of Intellectual Property Enforcement,” the MOU forms part of a broader bilateral agenda covering industrial and supply chains, participation by micro, small, and medium-sized enterprises (MSMEs), cooperation associated with the ASEAN–China Free Trade Area 3.0, and progress on the registration of Thai geographical indications in China. The MOU establishes a bilateral framework for cooperation and coordination in five broad areas: Strengthening dialogue in IP enforcement; Enhancing information sharing; Facilitating the enforcement of IP rights in cases arising in the parties’ domestic markets and on online platforms, in accordance with their respective domestic laws; Promoting cooperation in IP enforcement training and human resource development; and Undertaking other cooperation activities agreed upon by both sides. The Department of Intellectual Property (DIP) will serve as the principal coordinating agency for Thailand, while the Bureau of Law Enforcement and Inspection in China’s State Administration for Market Regulation (SAMR) will serve in that role for China. The framework is particularly relevant to the growth of e-commerce, as it covers infringement in the domestic markets and on