How can I check the status of my form submitted in ELIS?

Find the receipt number on your I-797.

If you'd like a case status update we first need your receipt number on your I-797, Notice of Action, that you received in the mail or your receipt number received electronically. The receipt number is a unique 13-character identifier that USCIS provides for each application or petition it receives. The receipt number consists of three letters-for example, EAC, WAC, LIN, SRC, NBC, MSC or IOE-and 10 numbers. NEXT STEPS FOR AGENT: 1. Go to https://egov.uscis.gov/casestatus/landing.do 2. Enter customers receipt number & click 'Check Status' 3. Next provide customer with status update. CITATION: Question mark hyperlink; https://egov.uscis.gov/casestatus/landing.do