Fastcase Sues Alexi Over Unauthorized AI Training Using Licensed Case Law
Fastcase Inc., the legal research platform owned by Clio, sued Canadian AI company Alexi Technologies Inc. in federal court in Washington, D.C. on November 26, 2025, alleging breach of a 2021 data license agreement. Fastcase claims Alexi used licensed case law to train commercial generative AI models and display full-text decisions to users—uses explicitly prohibited under the original contract's "internal research purposes" restriction. The agreement permitted Alexi's staff attorneys to prepare client memoranda using the data, not to build a public, competing legal research platform. Fastcase seeks an injunction requiring Alexi to destroy both the datasets and the AI models trained on them, treating the model weights as infringing derivative works.