Ninth Circuit Nursery
Based on statistical and textual analysis of the 148 patent cases heard by the Ninth Circuit Court of Appeals from its creation through 1925, this chapter suggests that the appeals judges created a legal environment highly favorable to innovative West Coast enterprises. Their rulings consistently sided with local patent holders and alleged infringers over litigants from outside the circuit. Cases involving only local parties produced more mixed results, as judges sought to mediate disputes among competing regional suppliers, while insulating small proprietors from risks of infringement. Through these means, the appeals court actively shaped competition and influenced the course of innovation in such emergent fields as oil drilling and refining, hydraulic machinery, and food processing. The distinctiveness of Pacific Coast patent law diminished after 1915 under influence of a federal judiciary stacked with protégés of ex-President William Howard Taft, who became Chief Justice in 1921.