"On March 18th, a company called Cygnus Systems was granted a slightly dull-sounding patent for "System and Method for Iconic Software Environment Management." Now, the development's looking more significant, as Cygnus has filed a patent infringement lawsuit against Google, Microsoft, and Apple. […] If necessary, Google, Microsoft, and Apple will surely fight all of this tooth and nail. Whether even a smallish effort is necessary remains to be seen, however, since examples of prior art are abundant."
Source: http://www.webpronews.com/topnews/2008/12/29/google-microsoft-apple-sued-by-cygnus-systems


