 Weingust represented an Ontario mental patient in a prominent human rights case during the early 1980s.The patient in question had never been charged with a criminal offense, but was held in a windowless cell at the Penetanguishene Mental Health Centre for ten years on the grounds that he was prone to violent behaviour.As his representative, Weingust planned to challenge sections of the Ontario Mental Health Act that allowed a person to be certified and imprisoned without a hearing, arguing that such policy contravened the Canadian Charter of Rights and Freedoms.