>To exist as a tech company today, you'd be insane to NOT patent as much as possible. Patent holders are not required to actively defend patents in order to ma

>To exist as a tech company today, you'd be insane to NOT patent as much as possible. Patent holders are not required to actively defend patents in order to maintain their rights to them. That's only trademarks. Amazon has a history of not just filing patents of questionable validity, they have a history of going after competitors for infringement. The most obvious example would be suing Barnes & Noble over the One-Click patent.