The Appendix provides details regarding data collection and coverage, the patenting examination process, the construction of the uncertainty index, as well as additional data specifications.

The United States Patent and Trademark Office classifies patents relating to AI in its USPC class 706 titled “Data Processing – Artificial Intelligence.” We derive our study from two data sources:

The 2019 Revised Patent Subject Matter Eligibility Guidance (2019 PEG) explains how Office personnel including patent examiners should evaluate claims for patent subject matter eligibility under 35 U.S.C. 101. While the guidance does not have the force and effect of law, it sets out agency policy with respect to the USPTO's interpretation of the subject matter eligibility requirements of 35 U.S.C. 101 in view of decisions by the Supreme Court and the Federal Circuit. The Guidance summarizes the procedure as follows: