Academic literature used to lack a taxonomy regarding the types of repeatable structures and approaches that incumbent companies can use in order to deal with frequently business model threatening open innovation developments threats that are often facilitated by start-up companies. The course of investigation provides a clustering taxonomy for these structures, so-called: corporate open innovation initiatives. Subsequently, the validity is tested by an in-depth analysis of Germany's 500 biggest companies along with 50 biggest banks and 30 biggest insurances. Furthermore, multiple case studies with industry experts show applicable management's best practices. Finally, a management framework is developed, which aims to be a summarizing tool for practitioners and researchers in order to define a suitable corporate strategy for creating an own corporate open innovation initiative.