# Trademark Similarity: SERA versus Ceragem

The registered service mark and the earlier mark consisting of “Ceragem” were found dissimilar in appearance and concept.

Source: https://www.iplexlaw.co.kr/en/blog/788779

HOME / NEWS & INSIGHTS NEWS & INSIGHTS Trademark Similarity: SERA versus Ceragem The registered service mark and the earlier mark consisting of “Ceragem” were found dissimilar in appearance and concept. Trademarks 2023.02.01 published IPLEX 2 min read 2003 Hu 892 Judgment Trademark registration invalidation (Earlier Registered Service Mark) Ceragem [Registered Service Mark] [Comparison of appearance, concept and pronunciation] 1. Appearance and concept The registered service mark and the earlier mark consisting of “Ceragem” were found dissimilar in appearance and concept. 2. Pronunciation The registered mark is pronounced “Sera”. The earlier mark “Ceragem” is a single three-syllable coined expression in Korean. Even if its owner intended “gem” to refer to jade, consumers would not necessarily recognize jade as a principal material of the designated healthcare, equipment-rental and physiotherapy services. There was no basis to assume that they would omit “gem” and call the earlier mark “Sera”. Although “Sera” matches the first two Korean syllables of “Ceragem”, the clearly pronounced final syllable “gem” gives the earlier mark a distinct overall sound. [Decisions] The marks are dissimilar in appearance, concept and pronunciation, and therefore dissimilar overall. Read the Korean source This article reflects the information available when it was published. Contact us to discuss your circumstances. Discuss this topic ↗ All articles Related service: Designs & trade marks ↗ Related service: IP disputes & appeals ↗ TALK TO IPLEX Discuss your IP questions We consider your technology and business needs together. ↗ Contact us Newer Trademark Similarity: RABVAC versus LAVAC ↗ Older Trademark Similarity: PRAGRAN versus PROGRAF ↗ Related insights Trademarks 2026.10.01 TikTok for confectionery: dilution can prevent registration in Korea Korean Patent Court case 2025Heo10379 explains why different goods and later commercial success did not overcome the reputation and distinctiveness of TikTok. ↗ Read article Trademarks 2026.09.30 Can Fear of a Trade Mark Dispute Justify Non-Use? Korean Supreme Court decision 2024후10504 separates an intention to launch from actual use and objective obstacles beyond the owner’s control. ↗ Read article Trademarks 2026.09.29 An App Name: A Mark for Software or for the Service It Delivers? The 010PAY decision, 2025허10405, considers actual transactions, revenue and the proper subject of Korean trade mark scope proceedings. ↗ Read article

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