\circledSThe \circledS symbol is used to denote a service mark, which is a symbol used to identify a service rather than a product. It is similar to the trademark symbol but specifically for services.
Indicating a service mark in text.
\text{This is a service mark } \circledSDenoting a service mark for a company name.
\text{Company Name } \circledSUsing the service mark symbol for a brand's service.
\text{Brand Service } \circledS