The application of patterns is very popular in different fields of Information Systems (IS), like Software Development or Workflow Management. However, in the field of Business Process Improvement (BPI), research on patterns has so far been scarce, and, in particular, works on BPI patterns are missing. Thus, in this paper, the pattern approach is applied to BPI by identifying the necessary attributes that constitute a BPI pattern. For this purpose, a literature review for patterns and their structure is conducted in other fields of IS, where patterns have proven to be successful. Afterwards, the resulting attributes are investigated against the background of requirements in BPI. A meta-model for BPI pat-terns is developed and defines the attributes of a BPI pattern regarding their interrelationships.