This is according to Tmz...
Kim, Khloe and Kourtney Kardashian are sticking to their guns when it comes to stopping Blac Chyna from the family name -- and neither marriage nor their mom will change that.
Sources close to the sisters tell us they will not withdraw their opposition to Chyna's application to trademark "Angela Renee Kardashian" -- despite Chyna's side saying there's no legal war brewing.
As we told you, BC sources say Kris Jenner reached out and promised to call off the lawyers. But our K sis sources say that's not how they feel about it. We're told it's nothing personal against BC, just biz -- they feel adding an extra woman to the roster will dilute the brand they've worked so hard to build.