This study sought to better understand students' grasp of complex copyright issues. Thirty-one undergraduate STEM students were interviewed to learn more regarding what students know about basic copyright and how they learned what they know about it. The interviews revealed that students often conflate aspects of copyright and plagiarism. Most students also indicated a desire to receive formal instruction regarding copyright. The use of case studies as the foundation of the interview process demonstrated that copyright instructional efforts can be designed to meet students where they are throughout their disciplinary educational experience, while also connecting to their personal life experiences.