Bhatt v. Doe has a good analysis of adding a defendant to proceeding after the presumptive expiry of the limitation period. If you want to cite a recent decision, this is a good option.
In the spirit of pedantry I have two quibbles. First, this:
[11] The passing of a limitation period is fatal to a motion to add a party (Limitations Act, 2002, s. 21(1)). The doctrine of special circumstances is no longer applicable (Joseph v. Paramount Canada’s Wonderland, (2008), 2008 ONCA 469 (CanLII), 90 O.R. (3d) 401 at paras. 27 and 28 as cited in Parent v. Janandee Management Inc., [2009] O.J. No. 3763 (Master) at para. 29).
It’s now ten years since the Court of Appeal held that the special circumstances doctrine is no longer generally available. Why do bar and bench feel compelled to make this point? Who still argues special circumstances?
Second, this:
[12] With respect to claims pursuant to the provisions of unidentified automobile coverage, discoverability is triggered when the insured knew or ought to have known about the material facts on which the claim is based. As stated by Justice Mackinnon in July v. Neal, 1986 CanLII 149 (ON CA), [1986] O.J. No. 1101 (C.A.) at para. 16:
…I have concluded that the time begins to run under such circumstances as the instant case, when the material facts on which the claim is based have been discovered or ought to have been discovered by the plaintiff by the exercise of reasonable diligence: Central Trust Co. v. Rafuse et al. [reported 1986 CanLII 29 (SCC), 31 D.L.R. (4th) 481], Supreme Court of Canada, released October 9 1986 – Le Dain J. (for the court) at p. 99 [p.535 D.L.R.].
See also July at para. 32, Hier v. Allstate Insurance Co. of Canada, 1988 CanLII 4741 (ON CA), [1988] O.J. No. 657 (C.A.) at para 35, Galego v. State Farm Mutual Automobile Insurance Co., 2005 CanLII 32932 (ON SCDC), [2005] O.J. No. 3866 (Div.Ct.) at paras. 8 and 9, Wilkinson v. Braithwaite, [2011] O.J. No. 1714 (S.C.J.) at paras. 31-35.
With respect to any claim, s. 5 of the Limitations Act determines discovery. There is no “trigger” beyond knowledge of the discovery matters. Cases decided under the former limitations scheme, and applying the common law discovery rule, are not helpful because, as here, they cause the court to frame the issue incorrectly.