ALEXANDRIA, Va., July 28 -- United States Patent no. 12,690,639, issued on July 28, was assigned to Marina Shabin (Sunny Isles Beach, Fla.).

"Self-leveling footwear" was invented by Marina Shabin (Sunny Isles Beach, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The inventor has realized that there is a need for adaptive footwear that can respond to variations in surfaces on which persons travel or exercise. The adaptation can extend to self-leveling functions to resolve surface asymmetry. According to some aspects, footwear, and for example, athletic shoes, can be improved to adjust the height of a person's foot based on dynamic adjustments made in the sole of the footwear. According to some aspects, d...