In brief

In a recent decision issued on 24 February 2026, the Intellectual Property Office of Singapore (IPOS) dismissed an opposition by Lenbrook Industries ("Opponent") to an application by Vivo Mobile Communication ("Applicant") to register the “vivo BlueOS” mark ("Application Mark") for Class 9 goods.

The Registrar found that the Application Mark was overall more dissimilar than similar to the Opponent's earlier “BluOS” mark ("Opponent's Mark"), and even if similarity was assumed, there was no likelihood of confusion. The Registrar accepted that the prefix “vivo” in the Application Mark materially altered the overall impression of the sign and weakened any overlap arising from the shared “Blu/BlueOS” components.

The decision reinforces a familiar principle in Singapore trade mark law: mark similarity is a holistic assessment, not a mechanical exercise focused on shared letters or syllables.

A distinctive house mark, particularly when placed at the front of a sign, may significantly reduce similarity and diminish confusion risks. The decision provides useful guidance for businesses adopting sub-brands or product-line branding.

In more detail

Background

The Applicant applied to register the Application Mark in Class 9 in relation to software-related goods.

The Opponent's opposition relied primarily on its earlier registered Opponent's Mark, which had been registered in connection with goods relating to software for processing and storing digital music files (among others).

The Opponent relied on the following grounds under the Singapore Trade Marks Act (TMA):

• Section 8(2)(b) (that the Application Mark was similar to the Opponent's Earlier Mark, and was sought to be registered for goods identical / similar to the Opponent's Earlier Mark, leading to a likelihood of confusion on the part of the public)
• Section 8(4)(b)(i) (that use of the Application Mark in relation to the goods for which it was sought to be registered would indicate a connection between the Applicant's goods and the Opponent, and is likely to damage the Opponent's interests)
• Section 8(7)(a) (that use of the Application Mark in Singapore is liable to be prevented by the law of passing off).

The opposition was unsuccessful on all grounds.

IPOS’ decision

Section 8(2)(b): Similar marks / similar goods and likelihood of confusion

The Registrar observed that the key difference between the two marks was the word “vivo” in the Application Mark. We reproduce both marks below for comparison:

A minor difference was that the first part of the Opponent’s Earlier Mark was spelt “Blu”, compared to “Blue” in the Application Mark.

Among others, the Registrar observed that “OS” generally refers to “operating system” in relation to Class 9 items, such that it would be descriptive in the current instance.

The marks were held to be overall more dissimilar than similar:

1. Visually, the marks had differing structure, proportion, and overall appearance; the marks consisted of a differing number of words; and the dominant and distinctive word "vivo" was positioned at the beginning of the Application Mark.
2. Aurally, the dominant component of the Application Mark “vivo” was not present in the Opponent’s Mark. The Registrar considered that the Singapore public would regard “vivo” as an invented word and, given that it was the dominant and distinctive element, as the first-position element of the Application Mark, it would carry primacy and anchor listeners’ recollection.
3. Conceptually, the marks were found to be conceptually neutral, given that the ordinary public would regard “vivo” as an invented word; the component “Blu” in the Opponent’s Earlier Mark is a truncated version of the word “Blue”, which was also present in the Applicant Mark; and “OS”, which was present in both marks, is an abbreviation of “Operating System”.

In any case, the Registrar also concluded that there was no likelihood of confusion; although the goods covered by the two marks were similar, the goods (namely, software and operating systems) were highly technical in nature and so required an intentional assessment as to their specific function and performance, and thus suitability.

Section 8(4)(b)(i): Well-known mark and confusing connection

The above reasoning concerning similarity of the marks and likelihood of confusion also applied with respect to the grounds of confusing connection with a well-known mark.

The Registrar was also not persuaded that “BlueOS” was well-known in Singapore to the relevant public to the extent required under the TMA to rely on such grounds.

Section 8(7): Passing off

The Registrar also found misrepresentation on the Applicant’s part not to have been established, such that the ground of passing off was not made out.

Key takeaways

This decision reinforces several important principles for brand owners, including that IPOS continues to resist overly technical or letter-by-letter comparisons in favor of market reality.

A distinctive house mark can shift the consumer’s overall impression, reducing similarity even when other components overlap. Companies launching new product lines can consider leveraging their house marks strategically to reduce clearance risk.

Notably, the "OS” component of both parties' marks was held to be descriptive as it generally referred to "operating system" in relation to Class 9 goods. Companies whose core marks include descriptive elements should thus always strengthen distinctiveness through consistent stylization, secondary meaning, or accompanying distinctive elements.

For technical software/OS goods, the IP office / adjudicator will credit that purchasers are more attentive and make deliberative choices - small differences can be enough to avert confusion with these goods involved. This is even more the case when there are short, descriptive prefixes/suffixes or tech descriptors involved ("OS"; "App"; "Cloud").

Finally, this decision is a good reminder that establishing reliance on Section 8(4)(b)(i) of the TMA requires more than use and reputation. The threshold is high and even if met, an opposition on this basis will not succeed where mark similarity is weak and there is no confusing connection. Well‑known mark claims need granular Singapore evidence and localized evidence (market share, ad spend, media coverage, user base in Singapore).

This case highlights that marks built around descriptive components (such as “OS”, colors or functional descriptors) are inherently more vulnerable in disputes, even where supported by an established product ecosystem.

Our team regularly advises clients across industries on trade mark clearance and portfolio strategy, including internationally; opposition and cancellation proceedings before IPOS; and enforcement and defense of sub-brands and product-line marks.

If you would like to discuss how this decision may affect your trade mark strategy in Singapore and elsewhere, please contact us or your usual Baker McKenzie contact.

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Sanil Khatri, Daryl Seetoh, and Natalie Joy Huang, Local Principals, have contributed to this legal update.

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