We previously blogged on Westerhof v. Gee, where the Court of Appeal held that non-party experts such as treating health practitioners may give opinion evidence formed in the course of treatment or based on observations formed outside of the litigation (such as accident benefits assessments).
The case was appealed to the Supreme Court of Canada. On October 29, 2015, the Supreme Court dismissed the application for leave to appeal. As a result, non-party experts will continue to be permitted to give opinion evidence without complying with r. 53.03, subject to the court's gatekeeper function.
The companion appeal in Baker v. McCallum was also dismissed.