This document discusses various types of intellectual property including trademarks, copyrights, patents, and trade secrets. It covers how to create, protect, and enforce each type of intellectual property. Specifically, it describes how trademarks identify goods/services and are created through use in commerce. Copyright protects original works and applies instantly upon creation. Patents protect novel, non-obvious, and useful inventions. Trade secrets provide competitive advantages if kept reasonably secret. The document also discusses antitrust issues related to franchising such as tying arrangements and pricing.