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.