The judge asked for additional summary judgment briefing both on Thomson Reuters’ contention that ROSS infringed on its copyrighted headnotes and Key Number System and on ROSS’s fair-use defense.

Lawyers looking at a decision can use the Key Number System to quickly find other decisions addressing the same legal issues. Around 2015, Ross Intelligence, Inc. (Ross) began building an AI legal ...

Westlaw also organizes its content using its “Key Numbering System” so that readers can drill down from a broad category (e.g., “intellectual property”) to find cases on specific topics ...

The judge asked for additional summary judgment briefing both on Thomson Reuters’ contention that ROSS infringed on its copyrighted headnotes and Key Number System and on ROSS’s fair-use defense.