The U.S. Justice Department has accused Armstrong of defrauding the government by accepting millions of dollars in sponsorship money from the U.S. Postal Service (USPS) as he led the team to a string of Tour de France victories while doping.

Armstrong was stripped of his seven Tour titles and banned for life from bicycle racing in 2012 by the U.S. Anti-Doping Agency after it accused him in a report of engineering one of the most sophisticated doping schemes in sports.

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Tour de France 2005: Lance Armstrong in Paris

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Nicole Navas, a spokeswoman from the Department of Justice, declined to comment on the case.

Eliot Peters, an attorney for Armstrong, did not respond to a request for comment.

Armstrong, who had long denied using performance-enhancing drugs (PEDs), admitted to doping in January 2013.

Armstrong's former teammate, Floyd Landis, originally brought the lawsuit in 2010 under a federal law, the False Claims Act, that lets whistle-blowers pursue fraud cases on behalf of the government, and obtain rewards if successful.

Lance Armstrong (Reuters)

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The Justice Department joined the case in February 2013. Armstrong, who contends that the USPS benefits outweighed the sponsorship costs, sought to have the case decided by summary judgment in April 2016.

"Because the government has offered evidence that Armstrong withheld information about the team's doping and use of PEDs and that the anti-doping provisions of the sponsorship agreements were material to USPS's decision to continue the sponsorship and make payments under the agreements, the Court must deny Armstrong's motion for summary judgment on this issue," Judge Christopher Cooper of the U.S. District Court for the District of Columbia wrote in a 37-page ruling on Monday.

Lance Armstrong at the 2005 Tour de France

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The USPS paid around $32.3 million to Armstrong's cycling team, the now-defunct Tailwind Sports Corp, from 2000 to 2004, looking to capitalize on Armstrong's Tour de France victories, as well as his "compelling personal story," Cooper said in his ruling.

The government has calculated damages at three times this amount. Landis stands to gain up to 25 percent of whatever sum the government recovers.

Paul Scott, an attorney for Landis, said by email, "We look forward to the day soon when we can put this case before the jury at long last."

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