ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,445,575, issued on Oct. 14, was assigned to Pencil Learning Technologies Inc. (Palo Alto, Calif.).

"Observation of parallel video collaboration sessions" was invented by Amogh Asgekar (Palo Alto, Calif.) and Ayush Agarwal (San Francisco).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides systems and methods for managed video conferencing. A system can include a media server comprising a processor, a network interface in communication with a plurality of client devices, and a memory storing a cryptographic key shared with an access control server. The system can receive, from a first client device via the network interface, met...