In a series of rulings issued on Thursday morning, the Supreme Court of Canada dismissed appeals in three cases involving telecom companies. In the first case, Marjorie Nelson sued Telus Corp. in a class action suit regarding wireless customers who cancelled their service between 2016 and 2018. Telus argued that provincial consumer protection laws did not apply to a federally-regulated industry such as telecommunications. The Ontario Court of Appeal dismissed the claim and the Supreme Court refused to hear it. Telus used a similar argument about jurisdiction when battling 364 charges laid by the director of criminal and penal prosecutions for the Quebec Attorney General’s office. A province cannot intervene in a federally-regulated business, the telecom argued. A lower court rejected the Telus claim and the Supreme Court dismissed the telecom’s appeal. BCE Inc.’s Bell Canada also used that argument to fight off two charges laid by the Quebec Attorney General. As in the Telus case, the appellate court rejected Bell’s defence and the Supreme Court decided not to proceed with it.