Intellectual property symbols decry, “I’m more than my symbol. I have meaning.”
I get asked frequently how intellectual property symbols differ and what they mean. This should help:
Trademark Symbol: TM, ™
Common law rights to your trademark and a right to inform possible infringers that it’s yours. However, this does not mean that the mark is registered with the United States Patent and Trademark Office (as that’s another symbol).
Service Mark Symbol: SM
Similar to the TM. It’s a claim of common law rights to a service mark (meaning services instead of goods). For example you may see a TM on a food item and an SM on a website for marketing consulting. Again this symbol does not mean and should not be used to represent that the mark is registered with the USPTO.
Registered Symbol: ® – an R with a circle around it
This is the official symbol used in the United States to distinguish marks registered with the USPTO vs. the other ones not registered (TM and SM). Do not use the circle around the r symbol unless your federal registration has been granted! If you do, you may not have strong case for infringement because your court actions and recovery methods are limited, but also you can get in trouble for fraud as your mark wasn’t really registered but represented that it was.
Acceptable Copyright Symbols:
Unlike trademarks where you can only use the circle R if you have a federal registration with the USPTO, you can use a circle C whether or not you have a registered federal copyright. You can also use a variety of other symbols. All acceptable symbols to indicate something is copyrighted are below.
Writing “Copyrighted By” and Your Name (added year or range of years optional)
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Copyright Symbol: © – a C with a circle around it
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Copyright Symbol: (C) – a C with parentheses around it
Same as the circle around the c above but “because the © symbol has long been unavailable on typewriters and ASCII-based computer systems, it has been common to approximate this symbol with the characters (C)” https://en.wikipedia.org/wiki/Copyright_symbol
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Copyright Symbol: ℗ – a P with a circle around it
This is rarely used. A lot of people think it’s a patent symbol. That’s not the case. It’s actually a symbol for a phonograph (sound recording) copyright.
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