Based on the linked article from The New England Journal of Medicine would one be able to tell if this is a cure that will be patented by Evil Corp? Or are the

Based on the linked article from The New England Journal of Medicine would one be able to tell if this is a cure that will be patented by Evil Corp? Or are these researchers publishing these findings as "open source"? I'm presuming the 2 drugs themselves are patented? Otherwise I have a hard time believing 4 doses would cost 100k?