"IV's licensee investors, including Sony, Nokia, Google, eBay, Intel, and Microsoft, are all sworn to secrecy about their involvement. According to the Journal article, other investors include pension funds and university endowments, and Myrhvold will target smaller companies for licensing fees (and equity) in the future. […] Moreover, much of it has gone underground and "off the books" — into threatening letters, secret settlements, massive cross-licenses, and a wide variety of privately pooled interests and funds. All of this is beyond the grasp of a Congress that has a hard enough time coming to grips with the doctrinal complexity of patent law and reported cases. Nobody wants to bite the bullet and say, if we're going to regulate innovation with a crude tool like patents, we should do it in a forthright and transparent way that takes economic factors and fundamental industry differences into account."