Dominion sues MyPillow CEO over vote claim

Dominion Voting Systems has filed a $US1.3 billion ($A1.6 billion) defamation lawsuit against the founder and CEO of the MyPillow company, saying that Mike Lindell falsely accused the company of rigging the 2020 US presidential election.

The lawsuit filed in federal court in the District of Columbia alleges that Lindell ignored repeated warnings from Dominion, a voting technology company that has filed similar lawsuits against Donald Trump lawyers Rudolph Giuliani and Sidney Powell.

Dominion accuses Lindell of repeatedly telling what the lawsuit labels the "Big Lie" that the company used its technology to steal the election from Trump.

"No amount of money can repair the damage that's been done by these lies, which are easily disproved. Hundreds of documented audits and recounts have proven that Dominion machines accurately counted votes. We look forward to proving these facts in a court of law," the lawsuit says.

Lindell, known as the "MyPillow Guy" from his US TV commercials, told the Associated Press that he welcomed the lawsuit and said that the discovery process will prove him right.

"It's a very good day. I've been looking forward to them finally suing," said Lindell, who went to the White House to promote his theories in the final days of the Trump administration.

A range of election officials across the country including former attorney general William Barr have said there was no widespread fraud in the election.

Lindell took umbrage at being repeatedly accused in the lawsuit of telling "the Big Lie" - noting that the expression was coined by Adolf Hitler - "The Big Lie here is the big lie. They're the big lie."

Lindell stood by a long video amplifying his claims that he released on February 5 and said he recently posted a 20-minute version.

This is the third defamation lawsuit that Dominion has filed against its accusers, following the cases against Powell and Giuliani.

At a news conference on Monday, Dominion CEO John Poulos said "it is by no means the last".

He said the company was also looking at the actions of various news organisations after the election.

Poulos and Dominion lawyer Megan Meier alleged that Lindell didn't really believe that the election was stolen from Trump.

"He knew that lying about Trump's loss would be good for My Pillow's bottom line," Meier said.

They disputed Lindell's claims that he has lost money for standing by his claims and said they looked forward to examining MyPillow's finances as part of the legal proceedings.