Beautiful Kayu performing at the Asian Grand Prix last month in her Prima Diva tutu and Betty Bunhead Tiara. Congratulations. Farmers and Local Government Responses in Demonstration Technology of High Yield Varietes of Open Pollinated Maize in Prima Tani of Boyolali District- Central Java mp3coffee.coi,BudiUtomo,AgusHermawan Assesment Institute for Agricultural Technology of Central Java Bukit Tegalepek, PO. BOX Ungaran . Prima facie case Presumption of validity of patent The first element to establish a prima facie case is to show that the plaintiff has a valid patent and the same is infringed by the defendant. It was argued that once the patent is granted it is presumed that the patent is valid and the plaintiff is entitled for injunction. The plaintiff.