The appeal will test whether intermediate copying of protected materials for AI training qualifies as fair use, and whether headnotes and the Key Number System merit copyright protection at all. The briefs on appeal are expected to sharpen the dispute over whether the district court correctly identified infringement or instead imposed an overbroad copyright restriction on AI development in the legal sector.
Attorneys should monitor this case closely. The Third Circuit's decision will likely establish binding precedent for how courts treat copyrighted legal research materials used to train competing AI products. The ruling could affect not only legal AI vendors but also the broader question of what data sources companies can use to develop machine learning tools in regulated industries. Amici filings from technology groups, publishers, and legal research companies suggest the decision will influence copyright doctrine well beyond this dispute.