＜Regular maintenance time information＞
・[All services stopped] All services of J-PlatPat will not be available from 19:00(JST) Nov 27(Fri) 2026 - 22:00(JST) Nov 28(Sat) 2026(planned).
In the following period, all services of J-PlatPat will not be available due to maintenance.
From 19:00(JST) Nov 27(Fri) 2026 - 22:00(JST) Nov 28(Sat) 2026(planned).
(Depending on the progress of the work, the suspension may extend until 24:00(JST) Nov 29(Sun) 2026.)
Please note that the helpdesk will be open until 19:00(Thu), Nov 27, 2026.
The service can be used as soon as the maintenance work is completed.
・[Some service outages] Patent/Utility model Search and Inquiry function and OPD service will not be available from 20:00(JST) Nov 20(Fri) 2026 - 9:00(JST) Nov 24(Tue) 2026(planned).
In the following period, Patent/Utility model Search and Inquiry function and OPD services will not be available due to maintenance.
From 20:00(JST) Nov 20(Fri) 2026 - 9:00(JST) Nov 24(Tue) 2026(planned).
(The service can be used as soon as the maintenance work is completed.)
Please note that there are times when history information is unavailable.
In such cases, please wait a while and try again.
In addition, keep in mind that the service stop scheduled day and time may be changed.
■One Portal Dossier (OPD) Search
All OPD Services
In the following hours, all OPD services are not available.
- Sunday 8:00 am to Sunday 9:00 am
Family information services
In the following hours, only the case of which the document number has been entered
are displayed.
- 1:00 pm to 2:00 pm Tuesday and Thursday（Summer time period 0:00 am to 1:00 am）
- 1:00 pm to 1:15 pm Monday through Saturday（Summer time period 0:00 pm to 0:15 pm）
- 1:00 pm to 2:00 pm Sunday（Summer time period 0:00 pm to 1:00 pm）
Service suspension time of the foreign patent office
In the following hours, the dossier information of the foreign patent office is not
available.
-EPO Sunday 2:00 pm to 7:00 pm（Summer time period 1:00 pm to 6:00 pm）
-MOIP Sunday 0:00 am to 10:00 am
-CNIPA Saturday 1:00 am to Monday 1:00 am
-TIPO 10:00 pm to 10:59 pm Monday through Friday
*Anyway it is also JST.
Summer time period is from 10:00am on the last Sunday in March to 10:00am on the last Sunday in October.
*The dossier information of each country may not be available due to the occasional
maintenance of the provided system in each country.