A Florida company has filed a federal lawsuit against billionaire Elon Musk’s X Corp., formerly Twitter Inc., alleging that its use of the “X” name infringes on X Social Media LLC’s trademark and violates Florida’s Deceptive and Unfair Trade Practices Act.

X Social Media LLC, which connects people with legal beefs to top-tier law firms on a contingency basis, filed the lawsuit Oct. 2 in the Middle District of Florida. The company has been using its “X” moniker since 2016, and it alleges in its legal complaint that X Social Media has sustained a loss in revenue that corresponds to Musk’s rebranding of Twitter in July of this year.

“X Corp.’s use of the “X” mark and recent attempt to register the mark in association with social media, business data, promotion and advertising, business consulting, market research services and advertising services … necessitates this action because its conduct has caused and will continue to cause serious irreparable harm to X Social Media,” the lawsuit states.