You can get the list of patents from here:

http://www-106.ibm.com/developerworks/blogs/dw_blog_comments.jspa?blog=384&entry=69779


-----Original Message-----
From: Bruno Wolff III [mailto:bruno(at)wolff(dot)to]
Sent: Friday, January 14, 2005 10:29 AM
To: Elein Mustain
Cc: Darcy Buskermolen; pgsql-hackers(at)postgresql(dot)org
Subject: Re: [HACKERS] IBM releases 500 patents


On Tue, Jan 11, 2005 at 10:33:44 -0800,
  Elein Mustain <elein(at)tulip(dot)norcov(dot)com> wrote:
> They probaly released the informix database patents.
> This is pertinent to us as several of them were interesting
> implementations of things like the function manager.

From what I read of this, the way they released the patents isn't completely
compatible with BSD licenses.

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