Cryptome offers Microsoft's second patent on digital rights management, invented by the same three persons as the first, Paul England, John DeTreville and Butler Lampson: http://cryptome.org/ms-drm-os2.htm This second patent was issued on December 7, 2001, a week before the first available here: http://cryptome.org/ms-drm-os.htm John DeTreville wrote on July 8, 2002, that neither he nor Butler Lampson were Palladium programmers, as distinguished from Paul England who was cited by Steven Levy in Newsweek as a Palladium programmer. John referred to another patent underlying Palladium. Cryptome did a search of the US Patent Office archives for other patents by the three inventors and for those assigned to Microsoft from 1996 to July 9, 2002. Only two patents for digtial rights management were listed, out of more than 2,000 Microsoft patents for the period: the two referenced above on Cryptome. Ross Anderson reported yesterday that MSNBC has pulled the Palladium article by Steven Levy, which is now here: http://cryptome.org/palladium-sl.htm See Ross's updated FAQ on TCPA and Palladium: http://www.cl.cam.ac.uk/users/rja14/tcpa-faq.html