Which trademark or copyright symbol do I use?
Erik K Pelton
FEBRUARY 4, 2021
One of the most common questions I get is about which symbol to use. Here is a handy cheat sheet I made: ® – a.k.a “circle-R” – Registered trademark with the USPTO. TM – Unregistered mark, used with products and tangle items. SM – Unregistered service mark, used with services. © – Beginning of copyright notice (along with year of creating and author — see lower right corned of the above graphic for example); not necessarily registered with the Libr
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