Legal argumentation has become one of the prominent research domains of legal philosophy in the last fifty years and its study has deeply influenced this discipline. One of the reasons of this is that the criteria of rationality and correctness which apply to legal interpretation and adjudication mainly consist in argumentative rules governing the legal practice. But how these rules can be properly singled out and analyzed remains highly controversial. With contributions from philosophers, logicians and lawyers, this book tries to provide a new framework, "Legal Inferentialism", for the analysis and critical assessment of such legal and philosophical issues.