Mirror Worlds patents that are probably the issue here:
http://www.google.com/patents/about?id=XJ4SAAAAEBAJ
http://www.google.com/patents/about?id=pcASAAAAEBAJ
Personally, I find it outrageous for an academic to demand credit for "inventing" displaying files side by side, searching files by content, and archiving files by time. The Sumerians probably already did this.