Uber-Waymo trial delayed as U.S. judge raises prospect of 'cover-up'

(Adds details on case and related content)

By Heather Somerville and Dan Levine

SAN FRANCISCO, Nov 28 (Reuters) - Uber Technologies Inc withheld evidence in a lawsuit filed by Alphabet Inc's Waymo, a U.S. judge said on Tuesday, delaying a trial to give Waymo time to review a letter alleging that Uber trained employees to steal trade secrets and hide their tracks.

The multibillion-dollar case, in which Waymo has accused Uber of stealing confidential information about its self-driving car designs, has hobbled Uber's autonomous vehicle ambitions. It is the highest-stakes legal challenge on a lengthy list of litigation that Uber's chief executive, Dara Khosrowshahi, inherited when he joined the company in August.

Tuesday's hearing centered on a 37-page letter from a lawyer for former Uber security analyst Richard Jacobs, which Uber did not show Waymo as both sides prepared their cases. The letter turned up last week when U.S. District Judge William Alsup was informed of it by the U.S. Department of Justice, days before the trial was set to begin. The discovery led Alsup to issue a new order for Uber to compel Jacobs to appear in court.

Uber's not turning over the letter months ago when the company was asked to gather such documents raised the judge's ire, setting up one of the most heated hearings in the case to date.

"I can't trust anything you say because it's been proven wrong so many times," Alsup told Uber at the hearing. "You're just making the impression that this is a total cover-up."

Alsup agreed to Waymo's request to delay the jury trial scheduled for next week, saying in federal court in San Francisco that "if even half of what this letter says is true it would be a huge injustice to force Waymo to go to trial" as planned.

It was the second time the judge has agreed to delay a trial at Waymo's request. In October, he chided Uber lawyers for disclosing thousands of emails to Waymo just before the trial had been set to begin..

Jacobs, who was fired from his job at Uber in April but still works for the company as a consultant, testified on Tuesday about the contents of the letter. The letter said an organization within Uber called marketplace analytics "exists expressly for the purpose for acquiring trade secrets, code base and competitive intelligence."

In his testimony, Jacobs described an elaborate intelligence operation inside Uber to deliberately research competitors and gather data about them, and use technology to avoid a paper trail.

"I did not believe it was patently legal," Jacobs said. "I had questions about the ethics of it."