The Organisation for Economic Co-operation and Development (OECD)
http://www.oecd.org/sti/scoreboard.htm
World's top corporate research and development (R&D) investors are leading global players at the technology frontier. These two thousand companies account for over 90% of global business R&D spending and own 66% of all patent families filed at the five largest intellectual property offices worldwide (IP5).
For this reason, firms often rely on a combination of intellectual property (IP) tools, the “IP bundle” , to better appropriate the results of their inventive and creative activities and differentiate their products from those of their competitors.