The goal of this course is to review trademark and other state and federal law designed to protect commercial goodwill; to explore the tension between trademark and related rights as intangible commercial property, on the one hand, and as devices to further competition and to prevent consumer deception, on the other; to explore trademark-related issues raised by commerce and speech on the Internet; to evaluate the rights of authors, artists, and other celebrities to trademark-like protection of their personae; and to analyze advertising claims against the backdrop of consumer perception. (The U.S. is a common law country in which trademarks are established through use and not registration. This course does not address the process for federal trademark registration; rather, it approaches trademark law from the standpoint of establishing trademark validity and enforcing valid trademarks through litigation or other dispute resolution mechanisms.) Eligibility: Open to all except 1Ls. Course format: lecture. Grading: final exam, 70%; midterm exam, 30%. This course may be taken for an S/U grade.