Maris Köpcke is currently a Research Associate of the Programme for the Foundations of Law and Constitutional Government at the University of Oxford. She has lectured at the University of Barcelona. Until 2014, before a career break, she was a Fellow and Tutor in Law at Worcester College Oxford. Her monograph Legal Validity: The Fabric of Justic has now been released. She is finalizing a second, shorter monograph, titled A Short History of Legal Validity and Invalidity: Foundations of Private and Public Law, to appear later this year. It shows that the notions of validity and invalidity have revealing historical roots that legal scholarship has unduly neglected. Prior to coming to Oxford, she read for an LL.M. at Harvard Law School (Cambridge, MA) and an LL.M. at the European Academy of Legal Theory (Brussels), having done her first law degree (BA and LL.M.) in her hometown (ESADE, Barcelona). As an Oxford graduate student, she co-convened the Oxford Jurisprudence Discussion Group during four exciting years (2005-9).