Court Finds That Using Copyrighted Material as AI Training Data Is Not Fair Use

A US appeals court ruled that Ross Intelligence violated copyright law by using Thomson Reuters' legal research content to train its AI, rejecting the fair use defense. This ruling challenges AI companies' claims that training on copyrighted materials is legally permissible and may impact ongoing lawsuits. Ross Intelligence shut down after the litigation began, highlighting the legal risks for AI firms using proprietary data without permission.