Thank you for contacting Intel Community. Sorry to let you know that, we do not provide part marking verification in order to avoid the devices from grey market.
Intel PSG has its authorized distributor to sale Intel devices. If you got the devices from formal distributors, you shouldn’t worry on the device authenticity as the devices must be valid units. Otherwise, we do not ensure the device quality and do not provide the further service. You may find the authorized distributor list from the link below:
In addition, please be noted that EPM3064ALC44-10N (Max 3000A) device families were obsolete since September,2018.
You are recommended to use the newest CPLD devices for your design.