ALEXANDRIA, Va., March 31 -- United States Patent no. 12,591,843, issued on March 31, was assigned to DoorDash Inc. (San Francisco).

"Scalable and efficient package delivery using transporter 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 providing, by server computer to a service provider, an onboarding interface for onboarding a service provider to accept returns initiated by end users and from a plurality of available transporters, and then receiving, by the server computer, selections from the service provider regarding different option...