I have seen the patent wall at Qualcomm home office, its very impressive and a massive arsenal of lawyers behind the wall---
Qualcomm Technology Licensing
Qualcomm's extensive, worldwide patent portfolio boasts thousands of patents and patent applications for CDMA, OFDMA and other technologies. Sales by Qualcomm's licensees of subscriber equipment generate more than 90% of our patent licensing royalty revenues. With the rapid expansion of CDMA and OFDMA worldwide, license and royalty revenues have consistently grown since the first commercial deployment of CDMA technology in 1995.
2.057 Billion on FY 2012----15% growth over 2011.....
Market Data 
Markets 
AI
