The panel will discuss various aspects related to an invitational meeting held at the Mellon Foundation On April 20th and 21st 2006 aimed at identifying concrete steps that can be taken to reach new levels of interoperability across scholarly repositories. The focus of the meeting was specifically on repository interfaces that support locating, identifying, harvesting, retrieving and submitting complex digital objects. Categories and Subject Descriptors H.3.7 [Digital Libraries]: Standards General Terms Management, Design, Standardization Keywords Digital libraries, Interoperability