The original filing stated: "Between May, 2017 and September 12, 2018 defendant Jenner began repeatedly and frequently causing her body to come into intimate physical contact with the body of [McWilliams] and making overt comments of sexual nature to [McWilliams] on a repeated basis."
However, Kris and her daughter Kourtney Kardashian insisted the claims made by the security guard - who also alleged he was fired after complaining about shortened hours and no meal breaks to the company who had contracted him - are completely false.
Their lawyer, Marty Singer, said: "Kris Jenner and Kourtney Kardashian vehemently deny the completely false claims made by former security guard Marc McWilliams.
"His absurd allegations are clearly fabricated and are contrary to easily confirmed facts. Kris never acted inappropriately toward him.
"The security company stopped assigning McWilliams to work there after the guard was repeatedly caught sleeping in his car on the job. Significantly, McWilliams never made any complaints to his employer about Kris until contriving this ludicrous claim a year later."
The statement noted that Kourtney is named in the suit but "is not accused of doing anything improper, nor did she do so."
In response, the security guard's own lawyer, Sean Novak, insisted the allegations were "based on accurate facts and evidence."
He added to E! News: "Our firm does not file 'frivolous' lawsuits. Our reputation speaks for itself, and any accusation from anyone that we would ever file a lawsuit without performing due diligence is outright false and defamatory. We look forward to litigating this in court."
SEXUAL HARM - DO YOU NEED HELP?
If it's an emergency and you feel that you or someone else is at risk, call 111.
If you've ever experienced sexual assault or abuse and need to talk to someone contact Safe to Talk confidentially:
• Call 0800 044 334
• Text 4334
• Email support@safetotalk.nz
• For more info or to web chat visit www.safetotalk.nz
Alternatively contact your local police station - click here for a list.
If you have been abused, remember it's not your fault.