Cross licence on LED patents among Lumileds, Philips, Nichia, Osram, Cree, Toyoda Gosel, Avago, Seoul Semiconductor, Citizen, GE Lumination, Epistar, Dominant, BridgeLux, Internatix, Kingbright, Samsung and so on.
Source:
http://www.theledlight.com.cn/307-knowledge-LED-pantents.html