“The lawsuit Trump has brought today against CBS is completely without merit and we will vigorously defend against it.”
Trump and Harris face each other in what polls show to be a tight race ahead of Tuesday’s US presidential election.
The suit demanded a jury trial and about US$10 billion ($16.7 billion) in damages, the filing showed. It alleges violations of a Texas law barring deceptive acts in the conduct of business.
Trump has repeatedly assailed the network on the campaign trail over the episode and has threatened to revoke CBS’s broadcasting licence if elected.
CBS has said Trump backed out of his own planned interview with 60 Minutes.