>> > >> > I'm pretty sure there's prior art. >> >> The oldest date seems to be 1994. I'd bet money somebody on this list >> can come up with some prior art. :-) > >Well, I haven't done a heck of a lot of research, but from reading the >abstract, I suspect CMU's SUP protocol would invalidate the patent. We >were using it while I was there as an undergrad. > >Steven Shafer and Mary Thompson, The SUP Software Upgrade Protocol >http://www.cs.cmu.edu/afs/cs.cmu.edu/project/mach/public/sup/sup.ps >8 September 1989 The patent mentions SUP. Tim