ONXX sorafenib vs BAY 73-4506 patent WO/2005/009961 covers fluoro-sorafenib... <a href="http://www.wipo.int/pctdb/en/wo.jsp?wo=2005009961&IA=US2004023500&DISPLAY=STATUS" rel="nofollow" target="_blank">http://www.wipo.int/pctdb/en/wo.jsp?wo=2005009961&IA=US2004023500&DISPLAY=STATUS</a> <img src=http://www.wipo.int/pctdb/images/PCT-IMAGES/03022005/US2004023500_03022005_gz_en.x4-b.jpg> obviously the chemical structure of nexavar is nearly identical... <img src=http://www.medsafe.govt.nz/Profs/DataSheet/n/Nexavartabpic1.gif>