ALEXANDRIA, Va., March 17 -- United States Patent no. 12,579,642, issued on March 17, was assigned to Ventana Medical Systems Inc. (Tucson, Ariz.) and Oregon Health & Science University (Portland, Ore.).

"Methods, systems, and apparatuses for quantitative analysis of heterogeneous biomarker distribution" was invented by Michael Barnes (Oro Valley, Ariz.), David Chafin (Tucson, Ariz.), Karl Garsha (Sahuarita, Ariz.), Thomas M. Grogan (Tucson, Ariz.), Esteban Roberts (Tucson, Ariz.), Benjamin Stevens (Oro Valley, Ariz.), Franklin Ventura (Tucson, Ariz.), Christophe Chefd'hotel (Sunnyvale, Calif.), Kandavel Shanmugam (Chandler, Ariz.), Joe Gray (Lake Oswego, Ore.), Damien Ramunno-Johnson (Vancouver, Wash.), Tothu Tania Vu (Portland, Ore.), Br...