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.
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.
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, it was common to approximate it with "" or "" It is also legal in the US to use the text "Registered, U.S. Patent and Trademark Office" or "Reg U.S. Pat & TM Off."
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.Other national marks
Canada- Official mark symbol,, used in Canada also has an to indicate that a name or design used by Canadian public authorities is protected.
- Marque de commerce symbol,, is used in Quebec.
- In China, the trademark regulations provide the symbol ㊟ may be used to show a registered trademark instead of ®.
- Warenzeichen grapheme,, used in some German publications, especially dictionaries, as informative and independent of the actual protection status of the name.