This document provides an overview of the basic law and process for analyzing patent infringement. It discusses determining infringement through a two-step process of claim construction and comparing the claims to the accused device. Key topics covered include literal infringement analysis, infringement under the doctrine of equivalents, and how prior art and prosecution history can limit the scope of equivalents. The presentation was given by patent attorneys from the law firm Schwegman, Lundberg, Woessner & Kluth and focuses on providing a competent opinion on infringement for both offensive and defensive purposes.