"Does one know if the June 6, 2013 agreement between Uni-Pharma and AMDL Diagnostics was renegotiated after the last patent expired? NO we don't know."
Yes, we know.
Since DR-70 was off patent, UNI could manufacture, market, and sell DR-70 without paying anything to Radient. So that is what they did.
Why do we know this? Because Biotech is not about saving lives or curing diseases or "doing the right thing." Biotech is about one thing only: making money. There is no way UNI would continue to give Radient money when they were no longer required to do so.