The latest statistics show that the cumulative value of U.S. intellectual property is approximately $5.8 trillion (or 48.4% of GDP), and each year over half a million patent applications are filed, over a quarter million patents are issued, over 4000 patent infringement suits are filed and IP verdicts total over $4.6 billion with a median patent damage award of approximately $4 million. Against this backdrop, I now present an updated taxonomy containing 19 IP-related business models. The business models are in addition to the “traditional” operating companies and their “traditional” IP law firms. Further, while not pretending to be all-inclusive, a directory of players implementing one or more of these 19 IP business models is available for download at the end of this post.