Service mark symbol

The service mark symbol (℠), the letters SM in superscript style) is a symbol commonly used in the United States to provide notice that the preceding mark is a service mark. This symbol has some legal force, and is typically used for service marks not yet registered with the U.S. Patent and Trademark Office; registered service marks are instead marked with the same symbol used for registered trademarks, the registered trademark symbol ®. The proper manner to display the symbol is immediately following the mark in superscript style.

The character is mapped in Unicode as U+2120 ℠ Service mark (HTML ℠). Unlike the similar trademark symbol, there is no simple way to type the service mark symbol on Microsoft Windows, but the built-in charmap application can help. In Microsoft Outlook or Word type 2120 and Alt-X. On Macintosh systems, the symbol can be inserted by using the Character Palette. On Linux systems, it can be inserted by pressing Compose, then s and finally m.