CIPO has scheduled MyCIPO Patents downtime for 17 September 2026, from 07:00 to 09:00 Eastern Time, and an extended window on 20 September, from 00:30 to 18:00. In Madrid, these periods run from 13:00 to 15:00 on 17 September and from 06:30 on 20 September to midnight at the start of 21 September. At this morning’s check on 17 September, access problems affecting the Canadian Patents Database remained listed as ongoing because of illegitimate automated traffic. A separate portal outage on 16 September was marked resolved.
A service interruption does not itself suspend filing deadlines: CIPO says they continue to apply unless an extension is provided. JCIPO recommends bringing forward time-sensitive submissions, payments and status checks, verifying receipts and identifying an available communication method permitted for the patent matter concerned. Keep evidence of delivery. A failed database search is not proof that a filing failed, and a maintenance notice should not be treated as permission to file late; the applicable rules and any subsequent official extension must be checked for each case.
