Lots of approaches and patent arguments but few with proven full scale production capacity like REGI. A different way of extraction is not necessarily scalable and or cost effecient. Ask Tyson with SYNM.
You guys are mixing apples with oranges...or the producer of corn oil from corn....after the ethanol process....with some of the potential users of corn oil as a feedstock to making biodiesel. Synm of course uses none, as Tyson is its feedstock supplier and partner and that would be yellow grease...and this company, REGI...has historically used soy oil...but is switching over some plants to yellow grease...hopefully, as synm has proved its not so easy even though cheaper.
So if GERS is the patent holder on inedible corn oil, good for them. They can sell it to whom they want, including REGI and SYNM. The beef would be with other ethanol producers who are trying to go around this patent, so you might want to take this converstation over to the PEIX board or BIOF board (ie other ethanol producers).