Some petitions are not really searchable online but if you have a receipt notice, you can try to call the USCIS to get an update. However, in most cases, there are no updates in the system until there is either a final decision or a request for evidence. In both instances you would be notified by the USCIS by mail as long as the USCIS has your current address on file. The online case status or the customer service representative would not really be able to give you any additional information.
Answered on Mar 12th, 2012 at 3:49 PM