Apple and Microsoft are playing dirty, according to a new blog post by Google’s Senior Vice President and Chief Legal Officer David Drummond. Instead of attempting to build innovative products and features, Drummond says Apple and Microsoft are content with filing repeated patent complaints in an attempt to impede Android’s rapid growth. Apple, Microsoft and others are carrying out “a hostile, organized campaign against Android by Microsoft, Oracle, Apple and other companies, waged through bogus patents,” Drummond wrote in his post. “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’ group including Microsoft and Apple), to make sure Google didn’t get them; seeking $15 licensing fees for every Android device; attempting to make it more expensive for phone manufacturers to license Android (which we provide free of charge) than Windows Mobile; and even suingBarnes & Noble, HTC, Motorola, and Samsung. Patents were meant to encourage innovation, but lately they are being used as a weapon to stop it.” Drummond goes on to write that Google intends to support its partners who are being targeted by these patent complaints. “In this instance we thought it was important to speak out and make it clear that we’re determined to preserve Android as a competitive choice for consumers, by stopping those who are trying to strangle it,” Drummond stated.