SAN FRANCISCO — In the latest twist in the knock-down, drag-out trade secrets fight between Uber and Waymo, lawyers for Google's driverless car division are taking aim at their opposing counsel.

In a court filing Wednesday evening, Waymo's attorneys at Quinn Emanuel Urquhart & Sullivan claim Uber's attorneys at Morrison & Foerster failed to disclose they had access to part of a trove of stolen Waymo files.

The MoFo attorneys were asked on a June 1 call whether they had any of the 14,000 files stolen from Waymo by former engineer Anthony Levandowski, according to the filing. They responded that MoFo did not have any of the materials that Levandowski downloaded, the filing said.