greenbird sends us to Forbes for an account of billions in investments flowing to US patent troll companies. One example is DeepNines, who is suing McAfee over a patent that covers combining an IDS and firewall in a single device. The patent was filed on May 17, 2000 and issued on June 6, 2006. No prior art for that, no siree. DeepNines is funded by "an $8 million zero-coupon note to Altitude Capital Partners, a New York City private equity firm, promising in return a cut of any winnings stemming from the lawsuit. The payout is based on a formula that grants Altitude a percentage that decreases with a bigger award."