US Patent 10089650 Leveraging ad retargeting for universal event notification

Method and systems for providing universal event reminders in place of advertisements by leveraging advertisement retargeting. Information about a reminder event and a registered interest associated with the reminder event is received from a browser utilized by a user. The user's browser is then directed to provide the registered interest and information about accessing the reminder to an advertising service. In response to receiving a request for content from the browser, the request for content being generated in response to the browser receiving information about accessing the reminder from the advertising service, serving to the browser the reminder.