Dr. Naira Simmons has published a nice short article titled: Putting Yourself in the Shoes of a Patent Examiner: Overview of the United States Patent and Trademark Office (USPTO) Patent Examiner Production (Count) System, 17. J. Marshall Rev. Intell. Prop. L. 32 (2017).
The goal of this note is to provide an overview of the system in which Patent Examiners operate by summarizing important aspects of the system currently used to evaluate the performance of a Patent Examiner.
Many patent attorneys know this system, but the article does a nice job of summarizing how it all works.