Meaning of Design / Name: Snape produces a Patronus, the same of Lily Potter's. This indicated that Snape cared for Lily, and cared for Harry because his mother would have wanted it. Dumbledore then asks Snape, "After all this time?" referring to whether Snape had this Patronus for the 17 years Lily was dead, and whether his loyalty to Lily ever wavered. "Always," Snape responded, as he still cared for Lily and Harry ever since.