Isn't that exactly what they're doing here? My understanding is Deno is asking the courts to invalidate Oracle's JavaScript trademark, making it a generic term in the public domain. They are not asking for the mark to be re-assigned to Deno.
Does it matter? When I say deno, you think of the software product deno, produced by deno. Just like when I say coca cola, you think of the specific drink produced by the coca cola company. What I say escalator, you don't think of that specific company's products, but of the staircase conveyor. When I say javascript, do you think of any oracle product? No! So why should users of javascript live in fear of a lawsuite from oracle?
Oh it very much matters. Folks are questioning the legitimacy of this endeavour. It’d be total hypocracy for them to be freeing JavaScript from Oracle and stating trademarks are bad and then to be maintaining similar themselves.