This chapter first examines the subject matter in which copyright subsists and the criteria for copyright protection as set out in the Copyright, Designs, and Patents Act 1988 (CDPA 1988). This centres on the concept of the ‘protected work’ and makes use of a distinction between what are sometimes known as ‘author works’ (literary, dramatic, musical, artistic, and film works) and ‘media works’ (typographical arrangements, sound recordings, broadcasts, and adaptations). It then considers the identification of the first owner of copyright when it comes into existence. It discusses the concept of joint authorship and ownership of copyright works when created in the course of employment. The final section discusses the duration of copyright.