Executives at New York-based firm Gwyneth Shoes are suing Hilton for trademark and patent infringement, according to documents filed last week, reports dailsystar.com.
Hilton has been accused of stealing the idea to include a heart-shaped pad on her heels' insoles, a design the brand's bosses claim they filed to patent in 2007.
The heiress released the range in question in February 2008.
Now attorneys for Gwyneth Shoes are demanding that Hilton must hand over every pair of shoes that feature the pink heart.
