Service and Website Interruptions

Business closure

The Canadian Intellectual Property Office (CIPO) is closed for business on statutory holidays. Under extraordinary circumstances when the office is closed and alternate correspondence procedures are unavailable, CIPO will be considered closed for business and all time limits will be extended until the next day that it is open for business. A list of business closure dates is available online.

Network maintenance

Network maintenance is scheduled every Saturday from 6:00 p.m. until 9:00 a.m. (ET) Sunday. During this period there may be disruptions to the CIPO Web site.

Online Forms maintenance

Online forms maintenance is scheduled every Sunday from 2:00 a.m. until 6:00 a.m. (ET). During this period, there may be disruptions to the online forms service.

Network maintenance (Patents)

Network maintenance is scheduled every Saturday from 6:00 p.m. until 4:00 p.m. (ET) Sunday. During this period there may be disruptions to the image database or to the database.

Database maintenance

Database maintenance is scheduled every Saturday from 5:00 p.m. until 7:00 p.m. (ET). During this period images may not be available.


We apologize for any inconvenience caused by these interruptions.

For more information, please contact the CIPO Client Service Centre at: 1-866-997-1936. For date-sensitive material, please review the Correspondence Procedures.

A complete list of the service interruptions to the CIPO site is available upon request.

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