◆Japan Patent Office
https://www.jpo.go.jp/

◆IP Search of Japan(J-PlatPat）
https://www.j-platpat.inpit.go.jp/

◆Offical Fee Calculation
https://www.jpo.go.jp/system/process/tesuryo/jidou-keisan/index.html

◆Patentscope
https://www.wipo.int/patentscope/en/

◆Madrid Moniter)
https://www3.wipo.int/madrid/monitor/en/

◆TM View)
https://www.tmdn.org/tmview/welcome#/tmview