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

May 13, 2013

Supreme Court Judgments Offer Insight into Concurrent-Use Trademark Registration

Informed Counsel

Disputes about the registrability of similar marks are on the rise in Thailand. When a brand owner’s attempts at trademark registration are thwarted by a prior-registered similar mark, one option is to seek registration under the theory of “concurrent use.” Concurrent-use registrations are allowed under Section 27 of the Thai Trademark Act, which provides room for two similar marks to be registered if a trademark has been honestly and concurrently used by the trademark applicant or if there are other special circumstances. But to obtain a successful registration under this provision, the party claiming to be the rightful owner of the mark needs to meet a specific burden of proof.

Two recent Supreme Court judgments provide new insights into how brand owners can achieve registration under Section 27. In one matter, the Court allowed the concurrent-use registration; in the other, the trademark was rejected. Both cases can help brand owners decide whether their trademark may be eligible for registration under this provision.

Anna Sui Corp. v. Department of Intellectual Property
(Supreme Court Case 11439/2554)

In this first case, Anna Sui Corp. applied for registration of the word mark ANNA SUI for products in several classifications of goods. After reviewing these applications, both the Registrar and the Board of Trademarks held that the trademark applications for ANNA SUI in Classes 20 and 24 were confusingly similar to the trademark ANNA in Designed Square, which had been previously registered for goods in Class 20. The authorities further decided that the application for ANNA SUI in Class 25 was confusingly similar to the prior-registered mark ANNA IS, which had been previously registered in the same Class 25.

Anna Sui Corp., as the plaintiff, filed a complaint with the Central Intellectual Property and International Trade (IP&IT) Court, claiming that the ANNA SUI mark had been widely used for a long period of time and was well known. In addition, the plaintiff stated that it had applied for registration of the mark in good faith. The IP&IT Court disagreed with these arguments and confirmed the earlier decisions by the Registrar and the Board that the mark ANNA SUI was not registrable.

Anna Sui Corp. appealed the first-instance court’s judgment to the Supreme Court. After reviewing the appeal, case background, and all evidence, the Supreme Court first found that the trademark applications for ANNA SUI were confusingly similar to the prior-registered trademarks ANNA IS and ANNA in Designed Square because these marks contained the substantial part “ANNA” and the applications were filed for the same types of goods.

Nevertheless, the Supreme Court recognized that the mark ANNA SUI was registered in the United States in 1983, and that products under the mark ANNA SUI had been widely distributed and promoted in many countries, including Thailand, for a long period of time. In addition, “Anna Sui” is the name of an American fashion designer. The Supreme Court was therefore convinced that the mark ANNA SUI was created without copying the marks of any other party, and that the mark was used in good faith before the prior trademark application was filed in Thailand. 

The Supreme Court thus concluded that the three disputed trademark applications for ANNA SUI were registrable; however, their registration would be subject to any conditions and limitations that the Registrar may deem proper to impose.

Matsuda & Co. v. Department of Intellectual Property and Valentino S.P.A.
(Supreme Court Case 7158-7159/2555)

In the second case, on March 7, 1997, Matsuda & Co. (Matsuda), the plaintiff, filed a trademark application for VALENTINO RUDY & V Device for goods in Class 21. After reviewing the application, the Registrar approved the mark for publication. Valentino S.P.A. (Valentino) believed that this trademark was confusingly similar to its mark VALENTINO & V Device registered since 1986 in the same class of goods.

Valentino lodged an opposition against the mark VALENTINO RUDY & V Device, but the Registrar dismissed the opposition. Valentino filed an appeal with the Board of Trademarks, which then overturned the Registrar’s earlier decision and rejected Matsuda’s trademark application.

In response, Matsuda filed a complaint with the IP&IT Court against the Department of Intellectual Property (DIP), which oversees the work of both the Registrar and the Board, alleging that the DIP’s decision was unlawful. Valentino, as an interested party, was granted a motion to join the DIP as a co-defendant in order to protect its interest.

In the complaint, Matsuda raised the following arguments:

  • The prior-registered mark belonging to Valentino contained only one word, “Valentino.” This word was nondistinctive and was disclaimed in the registered mark, and thus Valentino had no exclusive right to the word.
  • Matsuda’s mark, on the contrary, contained two words, “Valentino” and “Rudy,” and these two words were not disclaimed.
  • Both parties’ marks were different and so were the goods covered under each mark, despite falling in the same classification. Matsuda’s goods included drinking glasses, spoons, forks, and knives, while Valentino’s goods included soap dishes and towel racks made of metal and boxes of metal for dispensing paper towels.
  • Matsuda filed its trademark application in good faith, as Valentino is a name and the letter “V” refers to Valentino, and its mark had been widely used for a long period of time.

In response, Valentino argued that the marks were confusingly similar and that the evidence submitted by Matsuda showed no use of the mark with the goods in Class 21. Thus, Valentino contended that Matsuda’s mark VALENTINO RUDY & V Device was unregistrable.

The IP&IT Court agreed with Matsuda and decided that the mark VALENTINO RUDY & V Device was eligible for registration, with or without conditions, depending upon the Registrar’s discretion. The DIP and Valentino filed an appeal with the Supreme Court.

The Supreme Court first held that both parties’ marks were similar in appearance and pronunciation because they contained the same word “Valentino” and letter “V” and the position of the letter “V” was similar, although the stylization of the word and the letter were somewhat different. Also, the goods of both parties were in the same class and were related. These factors may cause confusion to the public as to the source of the goods. The Supreme Court further mentioned that the word “Valentino” comprised part of Valentino’s mark, even though it had been disclaimed. Therefore, the whole trademark must be taken into consideration for the similarity issue.

For the next step in its reasoning, the Supreme Court further considered whether these two similar marks could be allowed for registration under Section 27. The Supreme Court elaborated that in granting a registration based on concurrent use in good faith or special circumstances under Section 27, the applicant must prove their use of the mark with the applied-for goods in Thailand before the application for the mark had been filed in Thailand. The Supreme Court found that “Valentino Rudy” was the name of an Italian designer, and Matsuda submitted evidence of use of the mark with clothing. There was no evidence showing the use of the mark with the goods covered by the trademark application in Class 21 before March 7, 1997. 

Based on this, it could not be proven that the mark VALENTINO RUDY & V Device had been honestly and concurrently used with the goods in Class 21 or that special circumstances existed. The Supreme Court disagreed with the IP&IT Court’s ruling and held that the Board’s decision to reject the mark was correct (although the Court relied on different reasoning than the Board).

Therefore, Matsuda’s mark was deemed unregistrable and was rejected.    

Lessons for Brand Owners

Based on these Supreme Court decisions, it is clear that use of a trademark in Thailand is very important when seeking registration under the concurrent use or special circumstances provisions of Section 27. The Matsuda case, in particular, shows that the applicant must present clear evidence of use not just for the mark in general, but also for the specific goods covered by the application. And this use must be shown in Thailand prior to the application date of the mark. Of course, it is also necessary for the applicant to demonstrate its good faith in applying for the mark. Taken together, this evidentiary burden would be difficult to overcome for some applicants.

Yet the Supreme Court’s decision to allow registration in the Anna Sui case should be viewed as an important development for brand owners who have struggled to register their marks in Thailand due to a confusingly similar prior registration. This decision shows that, with the right evidence in hand, it is indeed possible to overturn a rejection by the Registrar, the Board, and the IP&IT Court.


Trademark Act, Section 27, Paragraph 1

When there is an application for registration of a trademark that is identical or similar to one already registered by a different owner in accordance with Section 13, or when there are applications for registration of trademarks that are identical or similar to each other under Section 20 in respect of goods of the same or different classes, but in the Registrar’s opinion are of the same character, and the Registrar deems that the trademark has been honestly and concurrently used by each proprietor, or there are other special circumstances which are deemed proper by the Registrar to allow registration, the Registrar may permit the registration of the same trademark or of nearly identical ones for more than one proprietor, subject to such conditions and limitations as to the method and place of use or other conditions and limitations as the Registrar may deem proper to impose. The Registrar shall without delay notify in writing the applicants or the proprietors of trademarks who have been granted registration of his decision and reasons therefor.

RELATED INSIGHTS​ 

August 13, 2026
Modern agricultural machinery is no longer purely mechanical but instead technology dependent. Modern tractors, harvesters, and other farm equipment increasingly incorporate embedded software, electronic control units, sensors, and digital diagnostic systems. While such technologies enhance efficiency, productivity, and precision farming, they also affect the manner of equipment repair and maintenance. As a result, farmers and independent repair providers may have little practical choice but to rely on authorized dealers, even for routine maintenance and repairs. Section 36 of Thailand’s Patent Act reflects the principle that the authorized sale of a patented invention usually exhausts the exclusive right of the patent owner over the specific product. This means that upon legal sale of the patented product, it can typically be used or resold without further authorization from the patent holder. This principle is relatively straightforward when applied to traditional mechanical equipment. Ownership of a machine ordinarily carries with it the practical ability to diagnose faults, replace worn parts, and restore the equipment to working order. Modern agricultural machinery, however, increasingly depends on embedded software, proprietary diagnostic systems, firmware updates, and other digital resources that may remain under the control of the manufacturer or patent holder. This tension lies within the “right to repair” debate. In the United States, on July 8, 2026, the Federal Trade Commission and five states announced a settlement with Deere & Company resolving allegations that Deere had unlawfully restricted farmers’ and independent repair providers’ ability to repair their equipment. Under the terms of the settlement, for the next ten years, Deere must provide repair resources, including software capabilities, on terms equivalent to those provided to authorized dealers. The Deere settlement highlights that the nature of ownership is changing, but legal concepts have not kept pace. Traditional patent-law concepts, including patent exhaustion, were developed with physical products
August 11, 2026
Cambodia’s Ministry of Justice has launched a new platform on its official website to publish notices of forced sales issued by each municipal and provincial court of first instance. The platform’s stated purpose is to inform the public and facilitate greater participation in forced-sale auctions conducted in connection with court-ordered enforcement proceedings. How the Platform Works The platform publishes forced-sale notices from courts of first instance across Cambodia’s municipalities and provinces and includes a link where the public can view properties currently subject to forced sale. To participate in a forced-sale auction, individuals can download Khmer-language bidding application forms through links provided on the platform. The form typically requires the applicant’s name, sex, year of birth, identity card number and issue date, and address, together with details identifying the immovable property (including its ownership certificate number), the relevant enforcement case number and date, and the reference to the public auction or tender announcement issued by the court. Completed application forms must be submitted directly to the specific municipal or provincial court that issued the forced sale. For further inquiries about a particular forced sale, interested parties should likewise contact the relevant municipal or provincial court. Forced Sale of Immovable Property in Cambodia The publication of these notices relates to the forced sale procedure for immovable property under Cambodia’s Code of Civil Procedure (CPC). Unlike property seizure by a court, a forced sale is a compulsory execution proceeding—a subsequent enforcement step that arises only after an underlying dispute has been adjudicated and a debtor fails to pay the debt or outstanding amount due under a final and binding judgment or other enforceable title of execution. For the purposes of this procedure, the term “immovable property” under the CPC refers to land, registered buildings, jointly held shares of such property, registered
August 10, 2026
Thailand has finalized its social media KYC (“know your customer”) rules under Notification of the Electronic Transactions Commission on Measures to Prevent Technological Crimes for Social Media Service Providers (No. 2), which was published in the Government Gazette on May 5, 2026, and will take effect on November 1, 2026. While an early draft of the notification proposed requiring social media platforms to arrange identification of every user account, the final notification is significantly more targeted, focusing on paid online advertising and advertiser identity verification. Though the regulatory initiative primarily aims to combat online fraud and technology-related crimes, it also has important consequences for intellectual property enforcement, because the verified platform records that will be generated under the new requirements can help IP rights holders to identify anonymous online infringers. Key Regulatory Mandates The notification requires social media service providers to verify the identity of advertisers before their paid advertisements are published and disseminated in Thailand through social media, regardless of whether the advertising fees come from the advertisers or third parties. Verification of an advertiser is valid for one year, after which verification would have to be performed again before the platform could publish additional paid advertisements from the advertiser. Permitted verification methods are specified under the notification. A platform may verify an advertiser by checking identity evidence and confirming the connection between the advertiser and that identity evidence, with the notification giving facial comparison against certain government-issued identity documents as an example. Alternatively, platforms may verify advertisers through a digital identity verification and authentication system with an identity-proofing assurance level not lower than the level prescribed by Thailand’s Electronic Transactions Commission. The notification further requires platforms to retain only the advertiser’s information necessary to identify the advertiser, beginning from the start of the advertising activity and for
August 6, 2026
Introduction: A Trademark Paradox in Sustainable Packaging Walk into any Thai supermarket, and the label-free water bottle is no longer a novelty. Thailand’s packaging market, valued at approximately USD 15.68 billion in 2025, is shifting toward minimalist, plastic-light designs as ESG pressures reshape how brands present their products. The country generated roughly 5.68 million tons of plastic waste in 2021, with a recycling rate of only 19 percent, and regulators are now considering rules that would allow label-free bottled water relying on embossing, laser printing, or QR codes instead of wrap-around labels. As packaging itself becomes the brand identifier, a paradox emerges: designs built to say the least often struggle hardest for protection under Thai intellectual property law. The Trademark Barrier: When Shape Is Not Enough Section 7, paragraph 2(10) of the Thai Trademark Act deems a shape distinctive only if it is not the natural form of the goods, is not necessary to achieve a technical result, and does not add value to the goods. The Department of Intellectual Property’s 2022 examination guidelines apply this test conservatively, as the following examples illustrate. A plain water bottle relying on subtle contours to signal its brand is typically read as just another bottle, not a source identifier. Acquired distinctiveness offers a theoretical escape route, but it demands extensive evidence of sales, advertising, and consumer recognition—an especially heavy burden for new entrants whose minimalist packaging has not yet achieved market prominence. The result is a structural bias against precisely the design innovation that sustainability goals are meant to encourage. Design Patents: A Partial, Imperfect Substitute Design patent protection, covering a product’s shape, configuration, or ornamentation, appears to offer an alternative route. In practice, it is constrained by the same forces driving the minimalist trend. Because many brands converge on similar solutions—clear