Jan Jakob Bornheim analyses the hypothesis about the inherent efficiency
of common law compared to civil law. He examines key commercial property
law concepts (i.e., ownership and security interests in relation to
movables) and determines the characteristics of each system with regard
to these. Using the Canadian experience as a model, he then takes a
close look at how the two legal systems interact, arguing that efficient
interaction can take place on both vertical and horizontal planes. On
the vertical plane, property law would be able to interact with
higher-level law (e.g., federal law in a federal state); on the
horizontal plane, property laws of different jurisdictions could
interact through the conflict of laws. The author also contends that
equitable property rights, including constructive trusts as a response
to unjust enrichment, should be governed by property law choice-of-law
rules.