In federal or multi-jurisdictional regulation systems there might exist conflicts between the various decrease appellate courts. Sometimes these differences might not be resolved, and it might be necessary to distinguish how the law is applied in one district, province, division or appellate department. These past decisions are called "case law", https://european-company-law-text65935.blogripley.com/38107208/an-unbiased-view-of-under-the-doctrinal-research-analysis-of-case-law-statute