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Meta given 30 days to cease using the name Threads by company that trademarked it 11 years ago
(www.techspot.com)
This is a most excellent place for technology news and articles.
Not an expert on trademark law, but I think "Threads by Meta" would not work as the main part of that name would still be "Threads", "Meta Threads" could work, but if they'd make the "Meta" part not prominent in the branding then again it would probably be considered as only "Threads".