Yahoo recently decided to sue Facebook over patents. The timing of the lawsuit came just before Facebook’s planned IPO, a previously exercised ploy to prompt a quick monetary settlement. Today however, Reuters reported that Facebook has been accumulating patents. Facebook purchased over 750 patents from IBM alone. It appears to mean that Facebook will not be quietly settling the disputed patent issue with Yahoo as Google and other have done in the past; but will instead parry the Yahoo move with its own armament of patents.