At the beginning of August 2009 the United States Court of Appeals for the Federal Circuit issued its decision in Exergen Corp. v. Wal-Mart Stores, Inc., et al., Case Nos. 2006-1491, 2007-1180 (Fed. Cir. 2009), a decision that changed the playing field with respect to charges of inequitable conduct in patent litigation. Essentially, the Federal Circuit decided that since inequitable…