Abstract: Digital innovation is typical patent-intensive innovation. In recent years, strategic patent behaviors have been increasingly emerging in the field of digital innovation. It has had a significantly negative impact on digital innovation. It is necessary to have an in-depth research on strategic patent behaviors in digital innovation. The analysis of time series data shows that the surge of patent families leads to the surge of patent quantity in this field. At the same time, patent litigations also present an explosive growth trend in digital innovation. On this basis, the research shows that patent families and patent litigations are not isolated in digital innovation. There is a significant interaction of mutual promotion between patent families and patent litigations. That is, the growth of patent family quantity leads to the emergence of massive patent litigations and the emergence of patent litigations stimulates more applications of patent families. Therefore, it is necessary to improve the examination and authorization standard of patent families. We can achieve the policy effect of "killing two birds with one stone" and curb the negative impact of the overflow of strategic patent behaviors on digital innovation.