As most lawyers know, section 15 of the Limitations Act, 2002 (the Act) sets a 15 - year ultimate limitation period from the day the act or omission on which the claim is based took place, regardless of when the claim was discovered. (practicepro.ca)
Of some comfort for such «late in the day» claims, however, the western provinces and Ontario all have long stop or ultimate limitation periods after which no action whatsoever can be commenced, as follows: (tdslaw.com)
Under the transition rules set out in s. 24, if a claim was not discovered before January 1, 2004, then January 1, 2004 is the deemed date the act or omission took place, and so January 1, 2019 would be the ultimate limitation period. (practicepro.ca)