Our favorite CAD software manufacturer has suffered a hit. Because of a patent infringement suit filed against them by Z4 Technlogies regarding the product activation software AutoCAD employs, U.S. District Judge Leonard Davis of Texas ordered Autodesk to pay an $18 million fine. This of course will not wreck Autodesk, which has revenues in excess of $1 billion, but still, it’s a tough pill for Autodesk to swallow!