ALEXANDRIA, Va., Oct. 18 -- ABL IP Holding, Conyers, Georgia, has been assigned a patent (9,791,543) developed by four co-inventors for a "system and method for estimating the position and orientation of a mobile communications device in a beacon-based positioning system." The co-inventors are Daniel Ryan, San Francisco, Kelby Edward Green, Boston, Emanuel Paul Malandrakis, Boston, and Konstantin Klitenik, Cambridge, Massachusetts. The abstract states: "An example of a lighting device including . . .