Trademark not copyright. Copyright only applies to entire works like a song text or the code Twitter has produced. For example the song title alone is not copyrighted. A trademark realistically only expires when it gets contested in court.

[–] Onionizer@geddit.social 7 points 1 year ago (2 children)

Is there a law that you must use a trademark to keep it?

[–] irmoz@reddthat.com 12 points 1 year ago (1 children)

There's a similar law where you must at least defend a trademark against misuse to keep hold of it. That was the reasoning behind this music video for Velcro:

https://youtu.be/rRi8LptvFZY

So, based on that, maybe they won't lose it just by not using it. But if someone else tried to establish a Twitter product, they may lose the trademark if they don't fight it.

[–] PipedLinkBot@feddit.rocks 4 points 1 year ago

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[–] nabladabla@sopuli.xyz 3 points 1 year ago

I think there is, but AFAIK they can use it for something very minor and it still counts.