(Reuters) - Uber Technologies ( UBER ) has filed a lawsuit against DoorDash ( DASH ), accusing the online delivery firm of anticompetitive practices, leading to higher costs for both restaurants and customers.

In a filing in California Superior Court in San Francisco on Friday, Uber ( UBER ) accused DoorDash ( DASH ) of coercing restaurants into using DoorDash ( DASH ) as their exclusive or sole preferred provider for delivery.

"DoorDash's ( DASH ) underhanded tactics have cost Uber ( UBER ) millions of dollars in revenue and unlawfully restricted its ability to grow Uber Direct, the Uber Eats platform for first-party delivery," Uber ( UBER ) said in the lawsuit, first reported by the Wall Street Journal late Friday.

"Uber's ( UBER ) case has no merit. Their claims are unfounded and based on their inability to offer merchants, consumers, or couriers a quality alternative," a DoorDash ( DASH ) spokesperson said in an emailed statement to Reuters.

Uber ( UBER ) did not immediately respond to a Reuters' request for comment.