On August 12, 2022, the National Center for Industrial Property Information and Training (INPIT) publicly announced that it would temporarily suspend service of its patent information platform, J-Plat Pat, due to maintenance.
The service suspension period and details are as follows.
All services suspended;
August 27, 2022 (Earth) 09:00 ~ August 28, 2022 (Sun) 21:00
September 22, 2022 (Wood) 19:00 ~ September 26, 2022 (Moon) 09:00
Suspension of patent/utility model search function and OPD service;
September 16, 2022 (Gold) 21:00 ~ September 20, 2022 (Fire) 09:00
The National Center for Industrial Property Information and Training
https://www.j-platpat.inpit.go.jp/
https://www.inpit.go.jp/english/index.html