The San Jose Mercury News reports that City Attorney Ren Nosky filed legal papers this week in Santa Clara County Superior Court. Nosky says he wants the court to establish once and for all that the project can't go back to the ballot, preempting a possible lawsuit by stadium opponents who have been seeking a second vote.
Those opponents were denied a second referendum by the Santa Clara City Council last month.
City officials say voters have already spoken on the issue. Fifty-eight percent of city voters approved the stadium project in June 2010.
But the opponents say city officials deceived them about the project's finances.