It's never easy being a patent king. Just ask companies like Rambus (NASDAQ:RMBS) and Tessera Technologies, which have spent untold millions waging legal battles to defend their intellectual property, which they rely upon to generate the licensing fees and royalties that make up the bulk of their revenues. You can be sure that any company trying to collect royalties on a large scale from an industry will create a lot of animosity among the companies it targets, not to mention the governments that support these companies.