Patent Number?
6,199,102. To view it, you can go to http://patft.uspto.gov/netahtml/srchnum.htm and enter "6,199,102" there.
For a bit of background, you can go to http://www.bayarea.com/mld/mercurynews/business/columnists/tech_test_drive/5565050.htm ms may be much narrower) than the casual reader
appreciates. Also, one has to look at the patent file wrapper to determine the outcome of prior art searches to see if subsequent communication with the examiner may have further narrowed the scope.
Good points -- and exactly why it would be expensive to pursue. Patent law isn't simple.
FWIW, a number of people have tried to find prior art, and were unable. Extensive searches? Probably not. But a number of anti-spam people tried and were unable to.
-Scott
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