Getting only Scala StaticAnnotation annotated classes at runtime

I am trying to find all the classes that have been annotated with the "Annotated" class, which I create below as a Scala StaticAnnotation class.

import scala.reflect.runtime.universe._

sealed trait Foo {}
class Annotated() extends scala.annotation.StaticAnnotation
@Annotated() case class AnnotatedFooCase() extends Foo
case class NotAnnotatedFooCase() extends Foo

val annotatedClasses = typeTag[Annotated].tpe.typeSymbol.owner.typeSignature.
  decls.filter(_.isPublic).filter(_.isClass).map(_.asClass).filter(_.isCaseClass)

I feel like this code should be working, but checking it out in a worksheet, I see this list is the result

annotatedClasses: Iterable[reflect.runtime.universe.ClassSymbol] = List(class AnnotatedFooCase, class NotAnnotatedFooCase)

I want a list that only includes the correctly annotated classes.