Pharrell is suing the Black Eyed Peas rapper, Will.i.am over a trademark war which according to TMZ, now involves Dr. Seuss!
Pharrell recently launched a YouTube channel called I Am Other ... and he's not happy that Will.i.am is trying to keep him from using the name.
TMZ says that according to Pharrell, Will sent him a legal document letting him know that he owns the rights to all things with an "I Am" element ... and warned Pharrell to back down!
Pharrell went to court and SUED Will -- in an effort to stop Will from stopping him.
Pharrell is asking a judge for written permission to continue using the "I Am Other" mark.