The Japan Patent Office (JPO) dismissed an opposition claimed by Carl Zeiss Microscopy GmbH against TM Reg no. 6846031 for word mark “AIRIS” due to dissimilarity to earlier IR no. 1566263 for word mark “arivis”.
[Opposition case no. 2024-900248, decided on May 13, 2025]
AIRIS
Appier Private Limited, a Singapore company, filed a trademark application for word mark “AIRIS” in connection with SaaS, computer programming and other computer software-related services in class 42 with the JPO on February 6, 2024 [TM App no. 2024-11487].

The JPO examiner granted protection of the applied mark and published it for a post-grant opposition on September 30, 2024 after registration [TM Reg no. 6846031].
Opposition by Carl Zeiss
On November 29, 2024, Carl Zeiss Microscopy GmbH, an owner of IR no. 1566263 for word mark “arivis” in standard that designates computer software-related goods and services in classes 9, 42, and 45, filed an opposition with the JPO and claimed cancellation of the mark “AIRIS” in contravention of Article 4(1)(xi) of the Japan Trademark Law.

Article 4(1)(xi) is a provision that prohibits the registration of a junior mark that is deemed identical with, or similar to, any earlier registered mark.
JPO decision
The JPO Opposition Board assessed similarity between “AIRIS” and “arivis” from visual, aural and conceptual points of view.
- Visual similarity
Even if the alphabets that constitute the contested mark are included in the cited mark, the terms “AIRIS” and ‘arivis’ differ in the order and the number of the letters, and the presence or absence of the letter “v”. These differences have a significant impact on the overall visual impression of two marks, given both have relatively short character structures. Therefore, the marks are visually distinguishable.
- Aural similarity
A comparison of the pronunciation of “AIRIS” and “arivis” reveals clear distinctions in the second and third sounds. Despite the presence of the vowel sound (i) in both sounds, the distinction between the second and third sounds has a substantial impact on the overall tone and feel. Consequently, when pronounced as a whole, there is no risk of confusion between the sounds, ensuring their clear distinction.
- Conceptual similarity
A conceptual comparison is neutral because neither “AIRIS” nor “arivis” has any clear meaning.
Based on the foregoing, the Opposition Board noted:
Even if the contested mark and the cited mark cannot be compared in concept, there is no likelihood of confusion in appearance and sound. Therefore, taking into consideration the overall impression, memory, and associations given to traders and consumers by means of the appearance, pronunciation, and concept of both marks, the Board found a reason to believe that two marks are dissimilar and unlikely to cause confusion when used on the services in question.
Consequently, the JPO decided to dismiss the opposition and declared validity of the contested mark as the status quo.