This document discusses the work of the WG3 Legal Interoperability working group for the OpenMinTeD project. The goal of the working group is to study copyright and related rights restrictions on text and data mining (TDM) activities and identify contractual and licensing tools to support TDM. It outlines legal barriers like copyright and database rights, as well as exceptions and limitations. It also discusses the use of licenses to enable access and how policy choices could address limitations of licenses. The working group's deliverables will include a compatibility matrix of licenses and ongoing analysis presented in academic papers.