diff --git a/openedx/features/course_experience/api/v1/serializers.py b/openedx/features/course_experience/api/v1/serializers.py
index 24f2670135..75ac290eeb 100644
--- a/openedx/features/course_experience/api/v1/serializers.py
+++ b/openedx/features/course_experience/api/v1/serializers.py
@@ -1,8 +1,20 @@
 """
 Serializer for Course Deadlines (Mobile)
 """
+from rest_framework import serializers
+
+from opaque_keys.edx.keys import CourseKey
+
 from lms.djangoapps.course_home_api.mixins import DatesBannerSerializerMixin
+from openedx.core.djangoapps.content.course_overviews.models import CourseOverview
 
 
 class CourseDeadlinesMobileSerializer(DatesBannerSerializerMixin):
-    pass
+    has_ended = serializers.SerializerMethodField()
+
+    def get_has_ended(self, _):
+        course_key_string = self.context['view'].kwargs.get('course_key_string')
+        course_key = CourseKey.from_string(course_key_string)
+        course = CourseOverview.get_from_id(course_key)
+
+        return course.has_ended()
diff --git a/openedx/features/course_experience/api/v1/views.py b/openedx/features/course_experience/api/v1/views.py
index e5055a60b9..ae486cae5a 100644
--- a/openedx/features/course_experience/api/v1/views.py
+++ b/openedx/features/course_experience/api/v1/views.py
@@ -82,6 +82,7 @@ class CourseDeadlinesMobileView(RetrieveAPIView):
     def get(self, request, *args, **kwargs):
         course_key_string = kwargs.get('course_key_string')
         course_key = CourseKey.from_string(course_key_string)
+        # Although this course data is not used this method will return 404 if course does not exist
         get_course_with_access(request.user, 'load', course_key)
 
         serializer = self.get_serializer({})