A service mark is simply a type of trademark. In fact, the words "trademark" and "mark" often refer to both trademarks and service marks. Trademarks help the government and consumers distinguish manufacturers of goods or products from one another. A service mark helps the the government and consumers distinguish service providers from one another. Common law service marks are accompanied by SM as opposed to the TM of common law trademarks. Both goods and services with federally registered trademarks use an (R) symbol.
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