1. per curiam) (finding "unlawful on its face" a territory-allocation and revenue-sharing agreement between two bar-review companies). 169. It is true that product differentiation does make cartelization harder, see Christopher R. Leslie, Trust, Distrust, and Antitrust, 82 TEX. L. REV. 515, 579 n;re Ciprofloxacin Hydrochloride Antitrust Litig., 544 F.3d 1323 (Fed. Cir. 2008); In re Tamoxifen Citrate Antitrust Litig., 466 F.3d,1990
2. Bourne et al. v. Bourne et al.
3. Unsettling Drug Patent Settlements: A Framework for Presumptive Illegality, 108 MICH;Michael A Carrier;L. REV,2009