diff --git a/common-name-localized.json b/common-name-localized.json
index d0d96e3..30d6136 100644
--- a/common-name-localized.json
+++ b/common-name-localized.json
@@ -3,6 +3,7 @@
   "title": "name.localized",
   "description": "A human-readable name localized in a single value.",
   "minLength": 1,
+  "maxLength": 90,
   "pattern": "\\S",
   "examples": [
     "Example name"
diff --git a/common-title.json b/common-title.json
new file mode 100644
index 0000000..68f21f5
--- /dev/null
+++ b/common-title.json
@@ -0,0 +1,9 @@
+{
+  "title": "copyrightHolder",
+  "description": "Name of the copyright holder of a specific media file.",
+  "type": "string",
+  "example": "publiq",
+  "minLength": 2,
+  "maxLength": 250,
+  "pattern": "\\S"
+}
diff --git a/event-name.json b/event-name.json
index 5778c0b..1a8eae6 100644
--- a/event-name.json
+++ b/event-name.json
@@ -1,5 +1,7 @@
 {
   "$ref": "./common-name.json",
   "title": "event.name",
-  "description": "The human-readable, localized name of the [event](./models/event.json).\n\nRequires at least one value, for the language specified in the [mainLanguage](./models/event-mainLanguage.json) property."
+  "description": "The human-readable, localized name of the [event](./models/event.json).\n\nRequires at least one value, for the language specified in the [mainLanguage](./models/event-mainLanguage.json) property.",
+  "minLength": 1,
+  "maxLength": 90
 }
diff --git a/organizer-name.json b/organizer-name.json
index 1c64a96..3a921d9 100644
--- a/organizer-name.json
+++ b/organizer-name.json
@@ -1,5 +1,7 @@
 {
   "$ref": "./common-name.json",
   "title": "organizer.name",
-  "description": "The human-readable, localized name of the [organizer](./models/organizer.json).\n\nRequires at least one value, for the language specified in the [mainLanguage](./models/organizer-mainLanguage.json) property."
+  "description": "The human-readable, localized name of the [organizer](./models/organizer.json).\n\nRequires at least one value, for the language specified in the [mainLanguage](./models/organizer-mainLanguage.json) property.",
+  "minLength": 1,
+  "maxLength": 90
 }
diff --git a/place-name.json b/place-name.json
index 66b36c8..0a1a571 100644
--- a/place-name.json
+++ b/place-name.json
@@ -1,5 +1,7 @@
 {
   "$ref": "./common-name.json",
   "title": "place.name",
-  "description": "The human-readable, localized name of the [place](./models/place.json).\n\nRequires at least one value, for the language specified in the [mainLanguage](./models/place-mainLanguage.json) property."
+  "description": "The human-readable, localized name of the [place](./models/place.json).\n\nRequires at least one value, for the language specified in the [mainLanguage](./models/place-mainLanguage.json) property.",
+  "minLength": 1,
+  "maxLength": 90
 }