As law libraries evolve in response to digital transformation and emerging technologies, understanding the legal frameworks of copyright and licensing becomes increasingly critical. This article by Jas Breslin outlines the basic principles of copyright and licensing, and how these interact in the daily operations of legal information services. It also addresses the growing impact of generative AI on copyright and licensing, highlighting the emerging challenges. The article aims to equip law librarians with the basic knowledge needed to navigate this complex and rapidly changing landscape.