Japan, Oct. 30 -- 一般財団法人観世文庫 holds the trademark for '花伝書.' Other related details are as follows:
Application Number: Reg.No.7094032
Class: 41
Status: LIVE-REGISTRATION-Published for Opposition
Filing Date: Nov. 10, 2025
Registration Date: Oct. 21
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/c1801/TR/JP-2025-129038/40/en
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