The document discusses the concept of "appropriability", which refers to the legal and economic conditions that affect a venture's ability to operate and protect its revenues and market share. It includes two components: protectability, or the ability to prevent copying, and freedom to operate, or the ability to execute an idea without infringing others' rights. The document provides an overview of different types of intellectual property protections including patents, copyrights, trademarks, and secrecy; it also discusses assessing a venture's appropriability regime and strategy.