Title: Ownership Types After Ten Years Yi Lu and John Potter, University of New South Wales Abstract: Ownership types were devised to allow the enforcement of object level encapsulation. This tutorial-style talk will present a number of variants of ownership types, including more recent extensions for dealing with effects. It aims to present the current state-of-the-art in ownership related research at a broad conceptual level. The talk will address a number of specific topics: implicit ownership structure via dominators, basic language constructs for expressing ownership (including Ownership Generic Java), external uniqueness, ownership domains, use of ownership in object synchronisation, ownership-based effect systems, including JOE, MOJO (with multiple ownership) and Oval, dealing with object validity.