By Gerald L Maatman, Jr., Shannon Noelle, and Elizabeth G. Underwood Duane Morris Takeaways: On November 20, 2025, in Buchanan v. Vuori, Inc., No. 5:23-CV-01121 (N.D. Cal. Nov. 20, 2025), Magistrate Judge Nathanael M. Cousins of the U.S. District Court for the Northern District of California imposed sanctions on plaintiff’s counsel for using artificial intelligence…