“According to the letter, NHK-Fintiv practice has written vital protections intended by the America Invents Act out of the law without public notice or comment, and ‘has caused—and continues to cause—immediate and irreparable harm to American innovators and manufacturers.’” Invoking familiar warnings about grave threats to U.S. innovation, 23 chief legal officers of big companies spanning industries from high-tech, internet and streaming to auto, financial services and home security, recently...