Compared to the completely laughable Google Doodle patent that Google obtained today (after a 10-year process), any patent on a user interface element is innovation deserving of a Nobel Prize. Also, Microsoft has already asserted 23 patents against Motorola. Only 1 of those is part of the 5 asserted against Motorola. So just counting the ones asserted against Motorola but not yet against Barnes & Noble et al., it would be easy for Microsoft to field more patents anytime. Barnes & Noble, Foxconn and Inventec have seen now that Microsoft is determined to assert its rights, and that message doesn't depend on exactly which 5 patents -- or how many -- were asserted in the initial complaints.