ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,217, issued on March 31, was assigned to Hatch Baby Inc. (Palo Alto, Calif.).

"Multifunction sleep training device with remote locking mechanism and methods of operation thereof" was invented by David Weiss (Palo Alto, Calif.), Ann Crady Weiss (Palo Alto, Calif.), Stuart Tyrrell (Redwood City, Calif.), Jillian Locks (San Mateo, Calif.), Philip Bourgeois (Woodside, Calif.), George Turvey (Brookdale, Calif.) and Martin Schnitzer (Graz, Austria).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sleep training device is disclosed comprising certain electronic components, audio components, light-emitting diodes (LEDs), physical switches, a capacitive touc...