AI Law Librarians: “Historically, acquiring case law data has been a significant challenge, acting as a barrier to newcomers in the legal research market. Established players are often protective of their data. For instance, in an antitrust counterclaim, ROSS Intelligence accused Thomson Reuters of withholding their public law collection, claiming they had to instead resort to purchasing cases piecemeal from sources like Casemaker and Fastcase.  Other companies have taken more extreme measures. For example, Ravel Law partnered with the Harvard Law Library to scan every single opinion in their print reporter collections. There’s also speculation that major vendors might even license some of their materials directly to platforms like Google Scholar, albeit with stringent conditions…”