Linked by Thom Holwerda on Tue 6th Apr 2010 18:32 UTC
And thus our true colours reveal. IBM made a patent pledge in 2005, promising not to sue open source projects over a list of 500 patents the computer giant holds. Today, however, IBM has threatened to sue TurboHercules, a French open source software house which provides support for the Hercules open source s390 mainframe emulator. Some of the patents in question are on the 500 list.