You can monitor the status of your Symantec Advanced Threat Protection (ATP) license and upload new licenses in ATP Manager. When multiple licenses are installed, the license with the latest expiration date is the one that applied and that date appears (in UTC).
When a license expires, there is a 60-day grace period in which to upload a new license. During the grace period, all product functionality remains intact. After the grace period expires, packet scanning no longer occurs and Synapse correlation is discontinued. You are also unable to submit files for sandbox analysis. However, you still have access to ATP Manager and all of your data.
ATP does not monitor the license status of other products, including Symantec products that may provide data to Synapse for correlation.