 Legal protections for intellectual property have a rich history that stretches back to ancient Greece and before. As different legal systems matured in protecting intellectual works, there was a refinement of what was being protected within different areas. Over the same period several strands of moral justification for intellectual property were offered: namely, personality-based, utilitarian, and Lockean. Finally, there have been numerous critics of intellectual property and systems of intellectual property protection. This essay will discuss all of these topics, focusing on Anglo-American and European legal and moral conceptions of intellectual property.