ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,557,880, issued on Feb. 24, was assigned to NIKE Inc. (Beaverton, Ore.).

"Articles of footwear and other foot-receiving devices having dynamically adjustable heel portions" was invented by Shane S. Kohatsu (Portland, Ore.) and Matthew C. Palmer (Portland, Ore.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Articles of footwear having an upper including a dynamic fit heel portion and a main body. The dynamic fit heel portion may include a lower heel counter and an upper heel collar. The upper heel collar may define at least in part, a foot-receiving chamber. An expandable joint may be provided between the lower heel counter and the upper heel collar. A m...