ALEXANDRIA, Va., June 18 -- United States Patent no. 12,327,217, issued on June 10, was assigned to DoorDash Inc. (San Francisco).

"Efficient and accurate return package deliveries with distributed fleet" was invented by Gagan Gupta (San Francisco), Viraj Bindra (San Francisco), Larry Waldman (San Francisco) and Rajat Shroff (Redwood Shores, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes receiving, by a server computer, request from an end user of an item to deliver the item to a service provider. The method includes providing, by the server computer, a retrieval message to a transporter to travel to the end user to retrieve the item and determine if the item is suitable for return t...