Rules of Patent Drafting: Guidelines from Federal Circuit Case Law (2020 Edition) addresses all Federal Circuit decisions through 2019, with extensive analysis of Section 101 cases and presents a unique approach to mastering the art of patent drafting. Author Joseph Root distills Federal Circuit jurisprudence into a set of rules, each embodying the essence of requirements for patent validity in a given area. One cannot employ these rules by rote, but understanding and applying their underlying principles will lead to bulletproof patents. Earlier editions gained widespread praise from reviewers and bloggers.