RE: [Asrg] Re: Tracking patent claims - please also track evidence of previous work.

Yakov Shafranovich <research@solidmatrix.com> Tue, 03 June 2003 17:51 UTC

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To: Peter Kay <peter@titankey.com>, asrg@ietf.org
From: Yakov Shafranovich <research@solidmatrix.com>
Subject: RE: [Asrg] Re: Tracking patent claims - please also track evidence of previous work.
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Date: Tue, 03 Jun 2003 13:43:40 -0400

I would suggest that you fill out the template provided on 
http://www.solidmatrix.com/research/asrg/asrg-ipr.html just so we would 
have your IP listed for the record.

Yakov

At 08:57 PM 6/2/2003 -1000, Peter Kay wrote:

>Is submission of a patent-pending appropriate for this list? Let me know
>and if so we'll provide our info.
>
>Peter Kay
>www.titankey.com
>
>
> > -----Original Message-----
> > From: Yakov Shafranovich [mailto:research@solidmatrix.com]
> > Sent: Monday, June 02, 2003 9:02 AM
> > To: Harry Tabak; asrg@ietf.org
> > Subject: Re: [Asrg] Re: Tracking patent claims - please also track
>evidence of
> > previous work.
> >
> > I am going to go through the mailing list archive and add everything
>in.
> >
> > Thanks,
> > Yakov
> >
> > At 02:51 PM 6/2/2003 -0400, Harry Tabak wrote:
> >
> > >Yakov,
> > >Your own post, "[Asrg] News Article - MailBlocks, Patents and Prior
>Art",
> > >19 May 2003, quotes an article about Mailblock and prior art claims
>by
> > >David F. Skoll and Brad Templeton.  Perhaps these claims should be
>added
> > >to your collection prior art for the Mailblock pattents.
> > >
> > >Reference to Skoll's work:
> > >http://groups.google.ca/groups?hl=en&lr=&ie=UTF-8&oe=UTF-
> > 8&selm=56luge%246on%40bertrand.ccs.carleton.ca
> > >and the thread "[Asrg] Not again - another challenge/response
>patent".
> > >
> > >Templeton's own page:
> > >http://www.templetons.com/brad/spam/challengeresponse.html
> > >
> > >Harry Tabak
> > >
> > >Yakov Shafranovich wrote:
> > >
> > >>David,
> > >>I updated the web page
> > >>(http://www.solidmatrix.com/research/asrg/asrg-ipr.html) to include
>prior
> > >>art. If anyone else knows of any IPR information including prior
>art,
> > >>please post to the list.
> > >>Yakov
> > >>At 12:29 PM 6/2/2003 -0400, David Wheeler wrote:
> > >>
> > >>>Vern Paxson -
> > >>>Thanks for tracking patent claims.  Could you also
> > >>>please track evidence of previous work ("Potential Prior Art"),
> > >>>so that those who are interested in potentially-invalidating
> > >>>prior art can learn of them too? I think that would be very
> > >>>useful information for anyone doing anti-spam research.
> > >>>Hopefully, others on this list will help fill out any entries.
> > >>>
> > >>>Here are some potential prior art entries for the Mailblocks
>patent,
> > >>>I'm sure others here can add a few:
> > >>>
> > >>><p>
> > >>>Challenge-response is simply an automation of the "Halt! Who goes
> > >>>there!" challenge that guards have been issuing for millenia.
> > >>>Thus, this patent can be challenged as a trivial automation of
> > >>>previous approaches that have been used for millenia.
> > >>><p>
> > >>>In 1992, Cynthia Dwork and Moni Naor of IBM
> > >>>described a challenge-response system in which the sender
> > >>>would be asked to process a particular solution before
> > >>>the receiver would accept the email
> > >>><a
>href="http://research.microsoft.com/research/sv/PennyBlack/junk1.pdf">
> > >>>[Dwork 1992]</a>.
> > >>>This work was publicly presented at Crypto '92.
> > >>><p>
> > >>>On May 26, 1996,
> > >>><a
> >
> >>>href="http://groups.google.com/groups?selm=4o8cqk%248ah%40dwst13.wst.
>e
> > dvz.sbg.ac.at&amp;output=gplain">
> > >>>
> > >>>Otmar Lendl (lendl at cosy.sbg.ac.at)
> > >>>posted how to implement a challenge-response system using
>procmail</a>.
> > >>>This was publicly posted to the newsgroup
>"news.admin.net-abuse.misc"
> > >>>as the subject "Re: Unsolicited junk email from
>exd48265@interramp.com",
> > >>>message-ID &lt;4o8cqk$8ah@dwst13.wst.edvz.sbg.ac.at&gt;#1/1.
> > >>>This was a simple script that accepted email that accepted email
> > >>>if it came from certain sources or included a special password in
>the
> > >>>"Subject" line; otherwise, a challenge was replied back to the
>original
> > >>>sender.
> > >>>This posting included the code to implement the approach, as a
>response
> > >>>to another query in the newsgroup.
> > >>>Indeed, there are hints that others have implemented
>challenge-response
> > >>>systems far earlier as well.
> > >>>
> > >>>
> > >>>Hope that helps, and thank you.
> > >>>
> > >>>
> > >>>--- David A. Wheeler
> > >>_______________________________________________
> > >>Asrg mailing list
> > >>Asrg@ietf.org
> > >>https://www1.ietf.org/mailman/listinfo/asrg
> > >
> >
> > _______________________________________________
> > Asrg mailing list
> > Asrg@ietf.org
> > https://www1.ietf.org/mailman/listinfo/asrg
> >
>
>
>
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