Apotex Inc. (“Apotex”), Pharmascience Inc. (“Pharmascience”) and Dr. Reddy’s Laboratories Ltd. and Dr. Reddy’s Laboratories Inc. (collectively, “Dr.Reddy’s”) each commenced an action under section 8 of the Patented Medicines (Notice of Compliance) Regulations against Janssen Inc., Janssen Oncology Inc. and BTG International Ltd. (collectively, “Janssen”) in relation to the drug abiraterone acetate.