If you’re referring to the united states, then no. You can lose the trademark, but only under specific conditions. If the big house or slipping was branding itself as an official Nintendo event or product, then that could endanger Nintendo’s trademark, but not simply hosting a tournament.
Seriously, I doubt any of the competitors, people that have been playing melee for at least 10 years, don’t have a Melee disk lying around. The piracy argument is complete and utter bullshit. That’s also a giant fuck you to an insanely dedicated fanbase, something that I can’t wrap my head around a dev doing, even if I’m not particularly a Smash fan, this shit is just unfair.
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