Trademark law furthers these goals by regulating the proper use of trademarks. Trademarks are governed by both state and federal law. Originally, state common law provided the main source of ...

Common Law Trademark Rights Common law trademarks arise from the exclusive, continuous use of a mark in commerce. It is not necessary to have a registration to use or protect these designations.

Inc., alleging that their unlicensed use of historic Penn State designs infringed the University’s registered and common law trademarks. Penn State, which has operated a formal licensing program ...

In a long-running trademark dispute between ... an exception to traditional state-law doctrines that require a high (indeed, all but insuperable) bar for actions seeking to ignore corporate identities ...