Mike Lindell, the CEO of MyPillow, is being sued by Dominion Voting Systems, a maker of voting machines. Justin Sullivan/Getty ImagesMike Lindell resigned from his conference as Dominion announced that he was being sued by Dominion.Lindell's attempt to dismiss the $1.3 billion lawsuit brought by the voting-machine manufacturer was denied by a federal judge.Lindell will hold a 72-hour event at South Dakota State University to prove his conspiracy theories about election winning.Check out more stories from Insider's business page.Mike Lindell, CEO of MyPillow, was seen rushing off the stage at Wednesday's cyber symposium. This happened at the same moment that Dominion Voting Systems announced that the $1.3B defamation lawsuit against him would proceed.Lindell tried to get the defamation lawsuit dropped during a June hearing. On Wednesday, US District Judge Carl J. Nichols ruled that the defamation lawsuits against Lindell as well as the pro-Trump lawyers Sidney Powell & Rudy Giuliani can proceed in full. Each party is seeking damages of more than a half a million dollars.Nichols pointed out in his judgement that the First Amendment did not grant Lindell "unlimited immunity" in the Dominion case. According to the company, Lindell's false claims it rigged Donald Trump's 2020 election was defamatory.Dominion filed lawsuits against the right-wing media networks One America News, Newsmax and Newsmax a day before the verdict, claiming that they were spreading false theories about the election.In an attempt to prove his conspiracy theories about the election, Lindell hosts a marathon cyber symposium that will last 72 hours in Sioux Falls.At 6:45 p.m., Lindell received news that his lawsuit had been dismissed. Lindell was captured on video sprinting off the stage and disappearing behind a curtain.Lindell had not returned to the Cyber Symposium at the time this article was published. A video reel that showed news articles promoting voter fraud next to an image showing Lindell hugging his pillow was replaced by the livestream.Continue the storyAfter Lindell abruptly left the stage, the livestream of Lindell's cyber symposium feed was replaced by a reel featuring news-article clips and a MyPillow advertisement. Screengrab/Mike Lindell Cyber symposium livestreamLindell told the audience on Wednesday that he would be on stage for three consecutive days.Lindell stated, "We are not going on a vacation." Lindell said, "You guys can eat. It's okay, but I don't eat! I will stay up for 72 hours."Zachary Petrizzo from Salon, a journalist covering the event, noticed that Lindell was speaking to an empty room on Day 2 of the conference.Lindell did not respond immediately to a request for comment.Business Insider has the original article.