N.D. CAL.Litigation
Proposed class sues Thomson Reuters over Casetext 'killer acquisition' into Westlaw
Bloomberg Law and the ABA Journal reported on October 2, 2026, that Carlsbad's Rubin Law Office filed a putative antitrust class action in the Northern District of California accusing Thomson Reuters of buying Casetext for $650 million and folding it into Westlaw to eliminate a lower-priced competitor. The complaint seeks class certification, treble damages, and an order to divest or restore Casetext; Thomson Reuters said it had not been served and declined comment until review.
Filing (Bloomberg Law) → · ABA Journal, Law360
Key points
- Rubin Law Office filed an Oct. 1 putative class complaint in the Northern District of California against Thomson Reuters.ABA Journal
- The suit alleges a $650 million Casetext purchase and Westlaw integration was a killer acquisition of a lower-priced rival.ABA JournalBloomberg Law
- Plaintiffs say their monthly cost rose from $32.50 on Casetext to $111.48 on Westlaw Classic with multi-year terms.ABA Journal
- The complaint seeks nationwide and California subclasses, treble damages, and divestiture or restoration of Casetext.ABA Journal
- A Thomson Reuters spokesperson told Bloomberg Law the company had not been served and would not comment until review.ABA JournalBloomberg Law
Sources3 articles across 3 outlets
Filed under
LitigationThomson ReutersU.S.Cal.N.D. Cal.AntitrustTechnologyLitigationFor practitionersFor vendorsFor governance