Nothing thrills John Oliver quite like a potential legal battle. After trolling Mike Pence by writing a queer children’s book and slamming his various “Business Daddies” on segments of Last Week Tonight, on Sunday he challenged Disney to duel over one of the corporation’s most beloved characters.

While speaking about intellectual property, Oliver noted that Disney will lose its copyright on the “closely guarded corporate treasure” that is Steamboat Willie–era Mickey Mouse after 95 years. Disney hasn’t lobbied for an extension from the government, and it holds the trademark protection on the character. A group of Republican lawmakers have also pledged to oppose any extension efforts in an attempt to penalize Disney for recent actions such as its criticism of Florida’s controversial “Don’t Say Gay” bill, according to the Los Angeles Times.

Oliver argued that the reason Steamboat Willie Mickey appears in the Walt Disney Animation Studios opening logo “does feel like a tactical legal move,” adding, “Basically, they may argue that this early Mickey’s image is so closely associated with their company that people automatically assume that any image of him was produced or authorized by them, and still take legal action.”

The late-night host then declared his intention to test this theory. “The fact is, anyone wanting to use the Steamboat Willie Mickey Mouse will probably still be taking a risk,” he continued. “But if you know anything about this show by now, we do like to take a risk every now and then.”

Oliver then introduced “a brand-new character on this show”: a black-and-white Mickey Mouse fashioned after the iconic figure. “We are staking our claim to Mickey Mouse right now,” before the character enters the public domain in 2024, Oliver said. “I know Disney’s lawyers might argue that this Mickey is closely associated with their brand, although they should know that he’s pretty closely associated with our brand now too.”

He then revealed that Steamboat Willie Mickey Mouse had been snuck into the opening credits for Last Week Tonight throughout his latest season. Oliver concluded his elaborate dare by seemingly taunting the company. “Disney has some other legal arguments up their sleeve,” he explained. “We’re only likely to find out what the [arguments are] if and when they sue.”