Intellectual PropertyTrademark
Trademark Overview: Infringement and Related Rights Under Trademark Law
This is Part 4 of a four-part overview of United States trademark law, covering what happens when a mark is misused and how owners enforce their rights. It explains the core test for infringement--likelihood of confusion--and the multifactor analyses the federal circuits apply, then walks through the related federal causes of action: dilution of famous marks under the TDRA, cybersquatting under the ACPA, false designation of origin and false advertising under Section 43(a), counterfeiting, gray-market imports, and contributory liability. It maps the major defenses, including descriptive and nominative fair use, the expressive-use limits the Supreme Court reset in Jack Daniel's Properties v. VIP Products (2023), and equitable defenses such as laches. It closes with the full remedial toolkit--injunctions, profits, damages, enhanced and statutory awards, attorney's fees, seizure, and customs recordation--plus a practical enforcement framework and FAQ. Read it alongside Parts 1 through 3 of the series on subject matter, substantive standards, and obtaining and licensing rights.