“A trademark is a word, phrase, symbol or design, or a combination of words, phrases, symbols or designs, that identifies and distinguishes the source of the goods of one party from those of others.” (from the USPTO’s Trademark Copyright or Patent page).
Businesses can register trade names with the Arizona Office of the Secretary of State.
Guidelines, the registered trade name database and related information are on the Secretary of State’s Trade Names and Trademarks webpage.
State Laws on Trademarks and Tradenames can be found in ARS §§ 44-1441 and on .
The US Patent and Trademarks Office website has information about searching for federal trademarks and filing applications for service and trademarks.