Microsoft's Second DRM Patent
John Young
jya at pipeline.com
Thu Jul 11 07:31:36 PDT 2002
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
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