If Nasrat goes ANDA route with Troxyca as RLD, earliest market date possible is August 2019, with likely approval date being further out than out. If he goes 505b2 NDA pathway with Troxyca as RLD, he will have a patent fight-out in court before FDA will approve.
But! If he uses 505b2 NDA pathway with OxyContin as RLD, he would likely get Priority Review (6 month review). The NDA application is more expensive, but the review is years faster. Also, we know there will be no patent or exclusivity challenge from Purdue. This is the pathway he used for SequestOx, with Roxicodone as RLD plus naltrexone in a "new combination." At this point, I'm not sure why he would not do both. He gets his own NDA OxyNal 12HR in 2018 and gets first to file exclusivity generic Troxyca in 2019-2020.
It all costs money, though. I just wish there were 100 million shares of ELTP sitting somewhere doing nothing that we could use to get ADF products to market. Hmmmmmmmmm.