Dell sued over patent infringement

This is a funny one -- Dell is being sued by DE Technologies for infringing on a patent covering international transactions handled over a computer. That could potentially impact US$15 billion of Dell's revenues. The fact that the US Patent office granted a patent for the process of companies conducting international transactions is the scary part. Makes me wonder if I could apply for a patent of applying for a patent and then sue everyone who's applied for a patent, and get away with it.