Kardashian filed for divorce more than a year ago, citing irreconcilable differences just weeks after the couple's star-studded and televised wedding. Humphries later filed for an annulment, claiming the marriage was based on fraud but he has yet to lay out any specific evidence for his claim.
Wasser says Kardashian's mother, Kris Jenner, and current boyfriend, Kanye West, have been deposed in the case.
Kardashian, 32, has not yet been deposed in the case. She is the star of the E! Entertainment Television series "Keeping Up with the Kardashians," the network's top-rated show, which averaged more than 3 million viewers in its sixth season. She also appears on other series involving her family.