[p2p-hackers] Altnet goes after p2p networks with obvious patent

Greg Bildson gbildson at limepeer.com
Tue Jan 11 20:20:08 UTC 2005

Just to be clear on the patents involved, there are two.  One was filed in
1997.  The other was filed in 1999.

This is a newer one of some kind (1999):

This is the 1997 one:

Any information about these and prior art would be greatly appreciated.


Greg Bildson
CTO, COO, Lime Wire LLC
(212) 219-6047

> -----Original Message-----
> From: p2p-hackers-bounces at zgp.org [mailto:p2p-hackers-bounces at zgp.org]On
> Behalf Of Ian Clarke
> Sent: Tuesday, January 11, 2005 2:17 PM
> To: Peer-to-peer development.
> Subject: [p2p-hackers] Altnet goes after p2p networks with obvious
> patent
> http://p2pnet.net/story/3512
> It seems that Altnet is finally going after file sharing networks with
> its laughably obvious patent on requesting files by a hash of the
> file's contents (fortunately Freenet's developers are predominantly
> European, and thus are largely immune to this).
> IIRC this patent was filed in 1997.  I think it is very important that
> those attacked challenge this patent head-on, either by claiming it is
> invalid due to being obvious, or finding prior art.
> I vaguely recall the last time I researched this that there was prior
> art from as early as 1990, I think it was Project Xanadu
> (http://xanadu.com/).
> Can anyone provide specific pointers to good examples of prior art?  If
> Altnet succeeds in extorting any money out of these P2P companies it
> will only serve to encourage them to attack others.
> Ian.
> --
> Founder, The Freenet Project	http://freenetproject.org/
> CEO, Cematics Ltd				http://cematics.com/
> Personal Blog					http://locut.us/~ian/blog/
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