Seven years after Chesbrough published the first book on open innovation, the field has literally exploded, and is continuing to do so at an increasing speed. Earlier overviews have analyzed the current status of the field at different points in time. The purpose with this paper is to take this research one step further and analyze gaps in the field as it has progressed up to date, and also discuss the managerial implications of that literature. All scientific literature (as found through major databases) published in English on open innovation has been analyzed qualitatively. The paper identifies current streams in the literature and identifies key issues that future research needs to solve. Compared to earlier reviews, we identify a shift in the direction that the research is taken. The paper discusses why this may be the case and speculates on the future of the field.