What is the test for common issues in a class proceeding?

Ontario, Canada


The following excerpt is from Banerjee v. Shire Biochem Inc. et al., 2010 ONSC 889 (CanLII):

The existence of common issues is the essential element of a class proceeding. The purpose of the C.P.A. is to provide a means for the resolution of these common issues in a single forum: Bywater v. Toronto Transit Commission, above, at para. 12.

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