Third Party Effects of Assignments of Claims in Private International Law. Although Art. 14 Rome I Regulation addresses the relationship between the assignor and the assignee as well as the relationship between the assignee and the debtor, there is still no provision as to the third-party effects of assignments. The question of what law should govern these third-party effects is, correspondingly, a subject of considerable discussion. While some propose that the law governing the assigned claim should be applicable, others suggest that third-party effects should be governed by the law that applies to the contract between the assignor and the assignee; the current prevailing opinion assumes that third-party effects should be governed by the law of the habitual residence of the assignor. This article demonstrates that a limited possibility for a choice of law for assignor and assignee is the most appropriate solution.