Good article thanks,Yes there drug will expire but really,why or who is going to go and try to duplicate there delivery system,think the cost and time would be to much,developing then getting it approved would take years and cost tens of millions imo,and in the mean while titan eventually in time could be working on a better form of implant which could make there's obsolete alot of possible senerios but duplicating the ProNeura imo would not be one of them