The purpose of this study is to present a unique database on commercialized patents and to illustrate how it can be used to analyze the commercialization process of patents. The dataset is based on a survey of Swedish patents owned by inventors and small firms with a remarkably high response rate of 80 percent. It contains some key variables on commercialization not found anywhere else, including whether, when and how (acquisition, licensing, existing or new firm) patents were commercialized as well as whether this commercialization was profitable or not. Thus, this patent database measures technological innovation. The dataset is complemented with indicators of patent quality (patent renewal, forward citations, and patent family) from archive sources. Basic statistics for the key variables are described. Finally, the scientific output in terms of published articles in peer-reviewed journals shows how this database can be used to analyze the commercialization process of patents. The dataset has, for instance, been used to 1) evaluate government loan programs for inventors; 2) analyze the different roles of the inventor and the Schumpeterian entrepreneur during commercialization; 3) estimate the transfer of tacit knowledge when patents are sold or licensed; and 4) analyze the entry strategy among inventors in oligopolistic markets.