Trademark “PPAP”
Zen International Patents and Trademarks
The song “PPAP” (Pen-Pineapple-Apple-Pen) by Picotaro was a big hit last year, getting lots of viewers on youtube. However regarding trademark “PPAP”, a famous trademark troll filed a trademark application 9 days earlier than Avex Group which Picotaro belongs.

http://avex.jp/pikotaro/