Registered trademark symbol

The registered trademark symbol, ®, is a typographic symbol that provides notice that the preceding word or symbol is a trademark or service mark that has been registered with a national trademark office. A trademark is a symbol, word, or words legally registered or established by use as representing a company, product or service.[1][2]

For other uses, see Trademark (disambiguation).
Not to be confused with the character Ⓡ (see Enclosed Alphanumerics) or ™ (the Trademark symbol) or © (the Copyright symbol) or ℠ (the Service mark symbol).
®
Registered trademark symbol
In UnicodeU+00AE ® REGISTERED SIGN (®, ®, ®)
Different from
Different fromU+24C7 Ⓡ CIRCLED LATIN CAPITAL LETTER R
Related
See alsoU+2122 ™ TRADE MARK SIGN
U+2120 ℠ SERVICE MARK

Unregistered trademarks can instead be marked with the trademark symbol, ™, while unregistered service marks are marked with the service mark symbol, ℠. The proper manner to display these symbols is immediately following the mark; the symbol is commonly in superscript style, but that is not legally required. In many jurisdictions, only registered trademarks confer easily defended legal rights.[3]

In the US, the registered trademark symbol was originally introduced in the Trademark Act of 1946.

Because the ® symbol is not commonly available on typewriters (or ASCII), it was common to approximate it with the characters (R) (or (r)).[lower-alpha 1][lower-alpha 2] An example of a legal equivalent is the phrase Registered, U.S. Patent and Trademark Office, which may be abbreviated to Reg U.S. Pat & TM Off.[5] in the US.[2]

Computer usage

The registered trademark character was added to several extended ASCII character sets, including ISO-8859-1 from which it was inherited by Unicode as U+00AE ® REGISTERED SIGN.[6]

See also

Notes
  1. for example the Python programming language Trademark Usage Policy advocates this usage.[4]
  2. Most word processors will autocorrect these two sequences to a proper ® symbol.

References
  1. For example, "Intellectual property office". Government of the United Kingdom. Retrieved 5 June 2020.
  2. "15 U.S.C. 1111". Retrieved 15 December 2005.
  3. For example "Unregistered Trade Marks". Government of the United Kingdom. Retrieved 5 June 2020.
  4. "PSF Trademark Usage Policy". The first or most prominent mention of a Python trademark should be immediately followed by a symbol for registered trademark: "®" or "(r)".
  5. Gregory H. Guillot. A Guide to Proper Trademark Use. 1995–2007. http://www.ggmark.com/guide.html
  6. "C1 Controls and Latin-1 Supplement | Range: 0080–00FF" (PDF). Unicode Consortium. 2016.
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