The research method underpinning the Ius Commune Casebooks for the Common Law of Europe is characterised by the following distinctive features:
- A Bottom-Up Approach. A case-based and therefore bottom-up approach to the study of the law to uncover common general principles which are already present in the living law, rather than a top-down approach followed by other complementary projects which endeavour to formulate (new) rules and model principles.
- A Functional Method. A functional comparative method searching for similarities in dealing with comparable situations under the major legal systems of Europe (in particular English, French and German law); materials from other legal systems will be included when they present an original approach or an evolution when compared to the main legal systems.
- An Emphasis on the Interplay between the National and the European Levels. An emphasis on the impact of European law (both EU and ECHR law) as a driving force towards the emergence of a new ius commune.
- A Focus on Concepts, Principles and Underlying Policy Decisions. A focus on concepts, principles and underlying policy decisions as opposed to mere "rules" (thus seeing the various legal national laws as alternative options rather than stand-alone systems).
- A Strategic Vision. A strategic vision of the role of comparative law as a tool to bring forward the common European legal heritage while respecting cultural diversity.








