You can check license expiration dates at any time.
If you see an icon next to the Home folder in the navigation area, a license or maintenance for a license is either about to expire or has expired.
Do the following:
Select the Home folder in the navigation area.
From the Home page, select License Summary from the global action menu on the Portal Connections portlet.
Check the values shown in these columns:
The Expiration column shows the date when a license on a node will expire.
The Maintenance Expiration column shows the date when maintenance for the product license on the node will expire.