The court heard multiple motions to strike claims against Her Majesty the Queen in Right of Ontario (HMQ), various Children's Aid Societies (CAS), and an expert witness (Julia Klein).
These claims arose from the use of unreliable hair follicle drug testing by the Motherisk Drug Testing Laboratory in child welfare investigations and proceedings, leading to children's apprehension and, in some cases, Crown wardship.
The plaintiffs alleged negligence, breach of Charter rights, bad faith, and other torts against the defendants.
The court granted all motions to strike, finding that HMQ and the CAS did not owe a private law duty of care to the parents or children in their supervisory or investigative roles, as their paramount duty was to the child's best interests.
Many claims were also deemed impermissible collateral attacks on existing court orders.
The claim against the expert witness, Julia Klein, was struck due to witness immunity and a lack of causal connection between her testimony and the alleged damages.