Lawyers for Quinn Emanuel Urquhart & Sullivan were unable to knock out a fraud suit Tuesday in which a former client accuses the firm of running up a $15 million bill.

A San Francisco judge denied most of the firm’s motion for summary judgment, reasoning that there is evidence that S.F. partner David Eiseman had told client Tele Atlas that it could recover attorney fees in an antitrust dispute with a rival GPS company. Judge Peter Busch also said there was triable evidence that Tele Atlas relied on that assurance in choosing a strategy that caused it to spend, in the judge’s words, “lots and lots of money.”