Since this is a rather shorter message than the one I mentioned last week
and have been forwarding to individual interested parties, I am taking the
(perhaps unwarranted) liberty of forwarding it to the list as a whole.
 
>Date: Fri, 6 Jan 95 12:49:14 PST
>From: RISKS Forum <[log in to unmask]>
>Subject: RISKS DIGEST 16.72
>
>RISKS-LIST: RISKS-FORUM Digest  Friday 6 January 1995  Volume 16 : Issue 72
>
>----------------------------------------------------------------------
>
>Date: Tue, 3 Jan 1995 22:15:24 -0800
>From: Tim Oren <[log in to unmask]>
>Subject: LZW/GIF flap on RISKS
>
>  [A longer message from Tim is floating around the well.  This one seems
>  quite succinct, and helps to clarify further the situation discussed in
>  RISKS-16.69 and .70.  PGN]
>
>Because the RISKS list gets pretty wide distribution, I wanted you to know
>that the original posting contains some pretty serious misinterpretation of
>a messy situation.  Briefly,
>
>- CompuServe is asserting no proprietary rights in the GIF spec, and couldn't
>even if we wanted to, since it has long been openly published.
>
>- The LZW algorithm was incorporated from an open publication, and without
>knowledge that Unisys was pursuing a patent.  The patent was brought to our
>attention, much to our displeasure, after the GIF spec had been published and
>passed into wide use.
>
>- We found it necessary to take a license to the patent from Unisys, and
>since a number of our developers had used GIF in good faith, we also
>negotiated a pass-through license for their benefit.  Clawson has
>distributed parts of this license, with a poor interpretation, outside of
>its original context, which was to developers of CompuServe-related products
>alone.  GIF is included in this license because we are unable to pass
>through a general license to practice LZW.
>
>- It is not the intent of CompuServe to attempt to enforce proprietary
>rights in GIF against users or developers, including those of Web
>technology.  We cannot and do not speak for Unisys' intent in this matter.
>
>- Having and transmitting GIF images is not an infringement of the patent,
>since 'practicing' LZW means running code which accomplishes the compression
>of the graphics.
>
>Tim Oren,  Vice President, Future Technology  CompuServe, Inc.
>
>------------------------------
>
>End of RISKS-FORUM Digest 16.72
>************************