Hybrid artificial intelligence system for semi-automatic patent infringement analysis

Disclosed embodiments perform patent claims analysis using preconditioning rules to determine relevant portions of a reference document. A query is submitted to find a set of patents that are similar to the reference document. A set of matching patents from the query are received and claim construction rules are used to determine how a meaning of claim elements of the patents will be ascertained in further analysis. Patent infringement rules and an artificial intelligence (AI) system are used to search the relevant portions of the reference document with the claim constructed claim elements of the patents returned from the search. The set of patents are ranked based on assigned confidence scores indicating a degree to which respective claim elements match the relevant portions of the reference document, and the results are presented to a client device. The system may a machine learning model and a natural language understanding (NLU) system.