Concepts and technologies are disclosed herein for an infringement detection system that obtains images of products and images of proprietary objects, and analyzes the images to make coarse matches. An image comparison engine may transform or augment the data for comparison for coarse and refined matching. The outputs of the image comparison engine are initial infringement predictions that are further evaluated using refined matching including shape fitting. The detection system outputs refined infringement predictions, which may be optionally confirmed as counterfeit based on various considerations (e.g., known inauthentic products, suspect sales history, text and image anomalies, etc.). Upon a refined match or confirmation, the detection system records potential infringements and associated metadata into a database to initiate an optional response action. Multiple response actions are possible for transmission over a computer network to one or more receiving electronic addresses, computer servers, network system gateways or mobile/fixed devices.