But it appears that Kim Kadashian, Khloe Kardashian and Kourtney Kardashian's companies aren't OK with this because just last week attorneys for their companies, Kimsaprincess Inc., Khloemoney Inc. and 2Die4Kourt filed papers to formally oppose Chyna's trademark registration.
So are the Kardashians now feuding with Chyna?
A family source tells E! News, "Their trademark attorneys automatically oppose anyone trying to trademark 'Kardashian.' I doubt the girls were even aware."