I read about this highly potent new Czech antiviral compound called MK 612 a few years ago, and was hoping that some progress would have been made by now, but I can find no more news on this subject. The fear was that this drug would not be marketed, because it would compete with other antivirals from the same company. Looks like that has turned out to be the case. Info: Scientists at the Institute of Organic Chemistry and Biochemistry in Prague have developed an extraordinarily potent anti-viral called MK 612, but its future is very uncertain due to rival antiviral products already marketed by the same license holder. "We know that we have an extraordinary substance," said Zdenek Havlas, Director of the Institute. "The US company Gilead Sciences, which participated in this project with us, will buy the licence but will probably not produce it. This substance would compete with other antivirals of Gilead company." Sources: Powerful new anti-viral developed Powerful antiviral drug developed by Czech scientists gets green light for further tests The Czechs have a breakthrough drug, but so far no one wants (Google translated from Czech) Patent application?