core + attic (Attic Area): these terms have been either depricated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

validUntil

Canonical URL: http://schema.org/validUntil

Thing > Property > validUntil

The date when the item is no longer valid.

Usage: Fewer than 10 domains
Values expected to be one of these types
Date
Used on these types
Permit

Schema Version 3.2