Lawyers for TGI Friday's in Bensalem filed the documents in response to a lawsuit filed by Linda Lorenzo, the officer's widow.
The lawyers noted that Leck's credit card was processed at 1:16 a.m. and the crash was at 3:13 a.m. about 12 miles away, in Northeast Philadelphia. Leck's blood-alcohol level was reported to be 0.218 percent.
The lawsuit said that Leck, 47, of Levittown, consumed "at least six alcoholic beverages" - three 22-ounce Coors Lights, one 14-ounce Coors Light, and two vodka drinks - at Friday's.
The restaurant served Leck alcohol when he was "visibly and obviously intoxicated," the lawsuit said.
Lawyers for Friday's said "no one at any time witnessed TGI Friday's personnel serve alcohol to defendant Leck while he was 'visibly intoxicated.' "
They also contend that Leck's blood-alcohol level could not have been 0.218 two hours after he left the restaurant if he had consumed only what was reported in the lawsuit.
The lawsuit "fails to name an indispensable party: the establishment or establishments that served defendant alcohol in the two hours immediately before the accident," according to the restaurant's lawyers.
They did not name a place in the court filing.
Cpl. Gerald McShea, a state police spokesman, said investigators tried to determine whether Leck had been drinking elsewhere.
"We suspect it," McShea said, but no establishment could be identified.
Contact Robert Moran at 215-854-5983 or bmoran@phillynews.com, or follow on Twitter @RobertMoran215.