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The service mark symbol ℠ (the letters ⟨SM⟩ in small capitals and superscript style), is a symbol used in the United States and some other jurisdictions to provide notice that the preceding mark is a service mark. This symbol may be used for service marks not yet registered with the relevant national authority. Upon successful registration, registered services are marked with the same symbol as is used for registered trademarks, the registered trademark symbol ®. The proper manner to display the symbol is immediately following the service name, in superscript style.

The service mark symbol is mapped in Unicode as U+2120 ℠ SERVICE MARK, in the Letterlike symbols block.^[1]

• ChromeOS: Ctrl+⇧ Shift+U 2120
• HTML: ℠^[2]
• Linux (and similar): Ctrl+⇧ Shift+U 2120, and/or if a Compose key is available, it can be inserted using: ComposeSM
• macOS: There is no simple way to type the service mark symbol. However the symbol may be selected from the MacOS Character Palette.
• Windows: There is no simple way to type the service mark symbol. However the symbol may be selected from the Windows Character Map.

• Registered trademark symbol is also used for registered service marks
• Trademark symbol ™

• World Intellectual Property Organization

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