No, the reminders don't stop automatically. We could check if the user clicked Yes on the reminder message, but with the provided API for the marketplace, we can't know for sure that they actually rated the app on the marketplace, probably because of privacy concerns. In order to avoid the never-ending reminders, we have provided the Skip Further Reminders check box, allowing your users to stop displaying them, if they decide to (hopefully after they have rated the app).
I hope this answers your question.
the Telerik team
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