A US appeals court upholds a ruling for Thomson Reuters in its copyright lawsuit against Ross Intelligence, rejecting Ross' fair use defense for AI training (Blake Brittain/Reuters)

A US appeals court has upheld a ruling in favor of Thomson Reuters in its copyright lawsuit against Ross Intelligence. The court rejected Ross Intelligence's fair use defense, which was related to the use of copyrighted material for AI training. This decision marks a significant development in the ongoing legal discussions surrounding the use of intellectual property in artificial intelligence development.