In his book, editor Joseph Scott Miller brings together a series of articles on perennial themes of patent law. Patents have existed since the fifteenth century, but it seems as of yet, no one has got it right. Many of the same controversies still plague patent law; whether it be standards of patent eligibility, creativity thresholds, or the underlying theorisation of the patent system. There are recurrent issues that, bearing the weight of technological change, call out for redefinition. This compendium on American patent law brings together a set of relevant articles that give us the foundation and perspective we need to answer these timeless questions. The book probes into these issues in four sections; patent law history, non-obviousness, economic analysis of patent law, patentability of software and business methods and, lastly, empirical analysis of patent law.