Comment This is a very trivial patent (Score 2, Insightful) 714
In UNIX (X) all windows have a WM_CLASS attribute. KDE groups windows according to this attribute (IIRC). Very old WM's already did this! So I really think there are 2 reasons why this patent should be declared invalid:
1. there exists prior art
2. it is trivial to group windows according to their class.
1. there exists prior art
2. it is trivial to group windows according to their class.