diff --git a/packages/extension-typography/src/typography.ts b/packages/extension-typography/src/typography.ts
index c90738cc..82b37a54 100644
--- a/packages/extension-typography/src/typography.ts
+++ b/packages/extension-typography/src/typography.ts
@@ -11,6 +11,7 @@ export interface TypographyOptions {
   rightArrow: false,
   copyright: false,
   trademark: false,
+  servicemark: false,
   registeredTrademark: false,
   oneHalf: false,
   plusMinus: false,
@@ -74,6 +75,11 @@ export const trademark = textInputRule({
   replace: '™',
 })
 
+export const servicemark = textInputRule({
+  find: /\(sm\)$/,
+  replace: '℠',
+})
+
 export const registeredTrademark = textInputRule({
   find: /\(r\)$/,
   replace: '®',
@@ -175,6 +181,10 @@ export const Typography = Extension.create<TypographyOptions>({
       rules.push(trademark)
     }
 
+    if (this.options.servicemark !== false) {
+      rules.push(servicemark)
+    }
+
     if (this.options.registeredTrademark !== false) {
       rules.push(registeredTrademark)
     }