[Spambayes] egregious patents on anti-spam techniques
Kaitlin Duck Sherwood
ducky at webfoot.com
Wed Jan 29 14:53:06 EST 2003
Gang --
I've recently become aware of two egregious patent applications
related to spam fighting. The first one looks like it might
conceivably cover Bayesian filtering. It would be good if someone
more familiar with Bayesian/classifier/machine learning theory could
check it out and perhaps challenge ("protest") the application.
The second is on using whitelists, blacklists, challenge-response,
and digital signatures to combat spam. I plan to protest that one
myself. I have killer prior art for whitelists, blacklists, and
challenge-response (see p.82 of _Stopping Spam_ by Schwartz &
Garfinkel, 1998). I do not know of prior art for using digital
signatures in the service of stopping spam. If you know of prior art
for that, you might want to issue a protest and/or send me the info.
(If you send me prior art on digital signatures/spam, please
+ read the patent claims first
+ put PRIOR ART in the subject line.)
I'm going to Japan for ten days, leaving Friday morning, and will not
have email connectivity then.
To protest a patent, you need to file prior art (within 60 days!)
with the patent office. See:
http://www.uspto.gov/web/offices/pac/mpep/documents/1900.htm
and
http://www.uspto.gov/web/offices/pac/mpep/documents/0600_610.htm#sect610
Patent application on adaptive spam filtering:
<http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=3&f=G&l=50&co1=AND&d=PG01&s1=email.TTL.&OS=TTL/email&RS=TTL/email>
Patent application on whitelists, blacklists, challenge-response, and
digital signatures used in spam-fighting:
<http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p
=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1='20030009698'.PGNR.&OS=DN/20
030009698&RS=DN/20030009698>
More information about the Spambayes
mailing list