The model turned entrepreneur filed a trademark application with the U.S. Patent and Trademark Office last month (Apr16), a month which also saw her announce her engagement to Rob Kardashian, 29.

The move is due to an increased interest in the 27-year-old beauty resulting in opportunities to cash in on her name, including TV appearances, products and party appearances.

According to TMZ.com, sources close to the star are concerned other women, including strippers, will aim to use her name or emulate distinctive blonde, buxom appearance.

The gossip site report Chyna's lawyer Walter Mosley as explaining that the filing was prompted by a recent deluge of film, TV and endorsement offers, and that as her name and likeness increase in value she wants to protect them from misuse.

Her engagement to Rob and involvement with the Kardashian family has prompted a surge in interest in the former hip hop model. Chyna's ex, the rapper Tyga, 26, is also dating a member of the extended Kardashian clan, Kylie Jenner, 18.

Her best friend and fellow model Amber Rose, 32, has recently landed her own talk show on U.S. TV network VH1.

The pair's TV careers were hit by a setback last year (15) however when the plug was pulled on a planned reality TV show.