Tech billionaire Elon Musk-owned X (formerly known as Twitter), was sued in federal court in Florida by a legal-marketing company that claims the social media giant’s new name infringes its trademark incorporating the letter “X.”

The agency, X Social Media, claims that X’s name is too similar to its own and is likely to cause confusion among consumers.

X Social Media has been in business since 2015 and owns a federal trademark for its name.

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The agency says that X’s rebrand has already caused it to lose revenue, as some customers have mistakenly contacted X Social Media instead of X. X Social Media is seeking an injunction to prevent X from using the name and is also asking for damages.

The lawsuit is the latest in a series of legal challenges facing X.

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