David Drummond, Senior Vice President and Chief Legal Officer for Google, has posted an open letter in which he accuses Apple, Microsoft, Oracle, and others of waging “a hostile, organized campaign against Android” using what he calls “bogus” patents. “They’re doing this by banding together to acquire Novell’s old patents (the “CPTN” group including Microsoft and Apple) and Nortel’s old patents (the “Rockstar”…