The Japan Patent Office (JPO) dismissed the opposition filed by Under Armour, Inc. against TM Reg no. 6839569 for the stylized mark “ARMOURIN” in Classes 25 and 28 due to dissimilarity to and unlikelihood of confusion with earlier registrations for the mark “UNDER ARMOUR”.
[Opposition case no. 2024-900229, decided on July 2, 2025]
ARMOURIN
The contested mark (see below) was filed by AMH LO INC., a U.S. company, in connection with apparel and footwear, including golf shoes, in Class 25; and sporting articles, inter alia golf clubs, golf equipment, in Class 28, with the JPO on December 26, 2023 [TM App no. 2023-143646].

The JPO examiner, as a result of substantive examination, granted protection of the mark on August 6, 2024 without issuing an office action.
After registration, the mark was published in the gazette for a post-grant opposition on September 9, 2024.
Opposition by Under Armour
Under Armour, Inc., a U.S. sports apparel company, filed an opposition against the mark “ARMOURIN” with the JPO on November 8, 2024, and claimed cancellation based on Article 4(1)(xi) and (xv) of the Japan Trademark Law due to the similarity to and likelihood of confusion with their earlier registrations for the word mark “UNDER ARMOUR”.

Under Armour argued the contested mark contains the term “ARMOUR” that has become famous among relevant consumers of the goods in question and played a prominent role in identifying a commercial source of the goods bearing the cited mark. Therefore, the contested mark should be considered similar to the cited mark “UNDER ARMOUR” and likely to cause confusion with the opposer’s business when used on the goods in question.
The JPO decision
Article 4(1)(xi) – Similarity of mark
The JPO Opposition Board found that the contested mark does not give rise to any specific meaning as a whole.
Regarding the cited mark “UNDER ARMOUR”, the Board observed that there is reason to dissect the term “UNDER” and “ARMOUR” into individual parts from visual and conceptual points of view.
Global assessment suggests there is no similarity in appearance and sound. Besides, a conceptual comparison is neutral as neither the contested mark nor the cited mark has a clear meaning. Therefore, the marks are dissimilar, even if the goods in question are the same as those cited, by taking account of the overall impression, memory, and association created in the minds of relevant consumers.
Article 4(1)(xv) – Likelihood of confusion
The Board negated a famousness of the cited mark “UNDER ARMOUR” because the opposer failed to provide sufficient objective evidence of actual sales amount and advertising in Japan.
Bearing in mind that the contested mark has a low degree of similarity to the cited mark, there is no reason to believe that relevant consumers will confuse the source of the goods in question bearing the contested mark with Under Armour, the Board noted.
In the light of the foregoing, the Board dismissed the opposition and declared the contested mark valid as status quo.




















