There has been a significant rise in the number of patents originating from academic environments. However, current conceptualizations of academic patents provide a largely homogenous approach to define this entrepreneurial form of technology transfer. In this study we develop a novel categorization framework that identifies three subsets of academic patents which are conceptually distinct from each other. By applying the categorization framework on a unique database of Swedish patents we furthermore find support for its usefulness in detecting underlying differences in technology, opportunity, and commercialization characteristics among the three subsets of academic patents.