There were many court cases, there are many still ongoing. The one he's referring to is a nut named Pat King who lost his court case to fight a covid ticket then claimed he's responsible for Alberta's restrictions ending (which is especially LOL now) because he didn't know what the word "material" means in legal terms.

His homemade lawyering was "prove covid exists or no ticket" and the gov said they didn't have to answer that as it wasn't "material" (ie relevant) to the case of his ticket. He claimed that meant they didn't have any material (ie evidence) that covid is real and the political-timed end of lockdowns (it was done so Calgary Stampede could happen) was because of him. Some idiot US Alex Jones wannabe on Rumble interviewed him and it went viral and people got mad at Rebel News because they pointed out this guy was a moron who didn't even understand why the Queen was mentioned on his court documents.