Alphabet claims Uber was hiding the self-driving technology that it allegedly ripped off

“They were hiding a device,” Alphabet said in a filing today, supporting its motion for a preliminary injunction that would prevent Uber from working on self-driving technology.

Uber says it isn’t hiding anything and did not infringe on Alphabet’s patents.

Alphabet has sued Uber over claims it stole its proprietary self-driving technology. At the center of the suit is a former Alphabet executive, Anthony Levandowski, who led its early efforts in developing self-driving technology.

Alphabet claims Levandowski stole 14,000 files from Alphabet before leaving to launch his own autonomous truck startup, Otto. Uber acquired Otto last August. The files include designs for Alphabet’s lidar (light detection and ranging) technology, a key component to most self-driving systems.