TBA Law Blog


Posted by: Julia Wilburn on Dec 2, 2025

Legal research tool Fastcase, now owned by TBA member benefit partner Clio, has filed a federal lawsuit accusing Canadian legal research startup Alexi of breaching a data-licensing agreement, infringing its trademarks and misappropriating trade secrets. The suit alleges that Alexi used Fastcase’s proprietary legal database — licensed only for internal lawyer research — to build and commercialize an AI legal research platform that directly competes with Fastcase, including training its AI models on Fastcase data and displaying Fastcase-sourced case law to users. Alexi's CEO denies any wrongdoing, calling the dispute a “massive miscommunication” that surfaced only after Clio’s recent acquisition of vLex, and says Alexi always operated within the agreement’s intended scope. After issuing a notice of breach in October and receiving a denial from Alexi, Fastcase terminated the agreement and filed suit, seeking injunctions, damages and disgorgement of profits. Reuters reports on the developments.