Dale Barr gave a CLE presentation entitled “2019 Revised Patent Subject Matter Eligibility Guidance” to the attorneys and licensing personnel of the University of Colorado’s Venture Partners (formerly Technology Transfer Office) in Boulder, Colorado. The presentation covered recent developments in patentable subject matter during US patent prosecution, including the USPTO’s new two prong approach to establishing patent eligible subject matter under Step 2A, and the Federal Circuit’s recent decision in Berkheimer and its impact upon Step 2B.