Use In Commerce
use in commerceFor the purpose of obtaining federal trademark registration, "commerce" means all commerce that the U.S. Congress may lawfully regulate; for example, interstate commerce or commerce between the U.S. and another country. "Use in commerce" must be a bona fide use of the mark in the ordinary course of trade, and not use simply made to reserve rights in the mark.
Source: U.S. Patent and Trademark Office
Related Terms from the Intellectual Property Law Glossary