Pharrell Williams Sue's Will.I.Am

They just keep going ...Pharrell Williams and will.i.am have been at each other over a legal dispute regarding Pharrell’s ‘I am OTHER’ brand and will.i.am’s ‘I AM’ trademark. its been said now  that Pharrell has filed legal suit of his own and is asking a judge to stop will.i.am from preventing him to use his ‘i am OTHER’ brand.

Now tell me what this is all about?