"We have asked DoorDash several times to stop using our trademarks and to stop selling our food," Arnie Wensinger, the restaurant’s general counsel, told CNBC in an email. "Unfortunately, they have continued to prominently use our trademarks and serve our food to customers who believe that we are responsible for their delivery. Prior to filing the lawsuit, we tried contacting them several more times but they never responded to our phone calls or letters."
In-N-Out said that its trademarks and food are being used by the service in a way that suggests the two have a partnership.
DoorDash has also been in the news this week for landing a delivery-test deal with KFC.