ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,547,970, issued on Feb. 10, was assigned to WALGREEN Co. (Deerfield, Ill.).

"Variable delivery fee based on congestion" was invented by Vince Scalabrino (Palatine, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods relating to management of delivery fleets are disclosed. Such systems and methods include using functionally-aligned machine learning engines to manage aspects of fleet dispatch and routing, inventory level adjustments, and order optimization. The techniques may be applied to manage an automated fleet delivery services system controlling a fleet of autonomous delivery devices (e.g., UAVs) to deliver products from a plural...