Maybe an expert in trademark law will find a flaw in my reasoning, but I'm not aware of any trademarks that are simply standard Unicode characters without any customization.
@voltronic He is undoubtedly a fool. They've now made a stylistic change to the logo that might be sufficient to trademark, but that's a terribly weak protection as most people won't tell the difference between it and the standard glyph anyway. Meanwhile its former name, logo and even the colour was an incredibly strong brand, internationally recognised. It's "New Coke" all over again, but worse.
@nemo20000
I can't see any difference between their logo and the standard character.
@voltronic They've reduced the size of the inline counter. Weak sauce though. Real I'm-going-to-be-a-graphic-designer-someday vibes.
Unless Elmo wants to start suing the Unicode Consortium over a clear case of prior use, one he's sure to get reamed on, no, he cannot defend this trademark.
This is something akin to my putting up a web site called "The Q'uran", and then suing every company that published an actual Q'uran and uses that term to refer to it.
https://arstechnica.com/tech-policy/2023/07/musk-rushes-out-new-twitter-logo-its-just-an-x-that-someone-tweeted-at-him/