I do not currently own shares in CLYW. I think you are greatly misinformed about WiMax and what it is vs what some promise it to be. Think of it as a way to get broadband to the WiFi hotspot, not replacing it. WiMax and WiFi will work together just as cable and WiFi have. The chances of ever seeing a handset that communicates directly on WiMax is very low.
CLYW's patent is broad enough to cover WiMax usage as well, however. I think it is this "too broad" nature of the patent that leaves little concern in the industry with violating it.