In copyright law, a work doesn't have to be a verbatim copy of another to constitute copyright infringement. Instead, the law requires the two works to be "substantially similar" for the later one to be a copy. Unfortunately, however, figuring out what is substantial similarity is not always an easy task. In this month's copyright chat, I will try to make sense of the substantial similarity standard while highlighting some recent case law involving tattoos, music, and visual art.