Pfizer's Ghost at the Merck-Schering Banquet
Executive Summary
Like Banquo's ghost at Macbeth's table, Pfizer Inc. haunts the new collaboration between Merck & Co. Inc. and Schering-Plough Corp. Indeed, without Pfizer, these companies may never have gotten together at all in this innovative co-development and co-promotion alliance which serves both as a patent-extension strategy and an alternative to mergers.