AceShowbiz -

Blac Chyna's attempt to trademark Kardashian name has reportedly been denied. TMZ is the first to claim that the Kardashian sisters, Kourtney, Kim and Khloe, have successfully blocked Blac's petition to own the rights to the name Angela Renee Kardashian.

The mother of two, whose real name is Angela Renee White, filed papers to trademark the name after she got engaged to Rob Kardashian last year. However, the Kardashian trio opposed the attempt, claiming that Blac's plan to use the name would "create confusion in the marketplace" and that they would "suffer damage including irreparable injury to their reputation and goodwill should the proposed name change go ahead."

Blac is allegedly not happy about it. She is "pissed, but not at the Kardashians." The Lashed Bar founder is reportedly not done with courts and will find another way to secure the name. "She's consulting with her lawyers now to see if she can appeal or if there is some loop hole," an insider tells HollywoodLife.com, adding, "She is determined to have the last laugh!"

In the meantime, Blac has sparked rumors of possible reunion with her baby daddy Rob. The on-/off-couple recently shared on Snapchat some videos that showed them getting cozy with each other. Blac and Rob welcomed their first child, a baby girl named Dream Kardashian, in November. They were engaged before the baby was born, but reportedly called it off during their most recent breakup this year.