934 F.3d 619
D.C. Cir.2019Background
- Plaintiffs (direct purchasers) sued the four largest U.S. freight railroads, alleging a conspiracy to fix rate-based fuel surcharges for unregulated rail services from July 1, 2003 to December 31, 2008.
- Plaintiffs sought class certification under Rule 23(b)(3) for ~16,065 shippers and relied principally on two regression models by economist Dr. Gordon Rausser: a "common factor model" and a "damages model" to prove classwide causation, injury, and damages.
- The district court initially certified the class, but this court vacated and remanded in light of Comcast, instructing the district court to scrutinize the damages model’s propensity for false positives.
- On remand the district court found Rausser’s models admissible but identified three fatal defects for predominance: inflated damages for intermodal traffic, false positives for legacy contracts, and that the damages model showed negative (no) damages for 2,037 proposed class members (12.7%).
- The district court concluded that even one of these flaws was enough to defeat predominance; it held that the number and raw count of allegedly uninjured members required individualized adjudications and no manageable mechanism existed to winnow them out.
- The D.C. Circuit affirmed, finding no abuse of discretion in denying certification because the plaintiffs lacked common proof that all (or a de minimis number of) class members were injured by the alleged conspiracy.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether the plaintiffs’ regression damages model can establish classwide causation, injury, and damages | Rausser’s damages model reliably shows classwide injury and any negative estimates are due to normal prediction error | Model is unreliable: measures damages for legacy contracts, inflates intermodal damages, and shows 2,037 members with negative damages requiring individualized inquiries | The model cannot prove classwide injury because it shows 2,037 members with no injury; denial of certification affirmed |
| Whether Rule 23 requires reliability beyond Daubert/Rule 702 when assessing predominance | Plaintiffs: reliability challenges are for admissibility or summary judgment, not necessarily for predominance | Defendants: Rule 23 requires a hard look at statistical reliability beyond mere admissibility (per Wal‑Mart and Comcast) | Court did not decide the general standard but found class fails even if models are admissible because they do not show common injury for all (or de minimis) members |
| Whether a class may include a non‑de minimis subset of members for whom common evidence fails to show injury | Plaintiffs: a de minimis exception is permissible; their allegedly uninjured group is small relative to revenue and class size | Defendants: a 12.7% subset (2,037 members) is far above any de minimis threshold and requires individualized trials | Court: even assuming a de minimis exception, 12.7% and 2,037 individualized determinations are not de minimis and defeat predominance |
| Whether other documentary or expert evidence can supply common proof to fix defects in the damages model | Plaintiffs: documentary evidence of uniform surcharge enforcement and Dr. McClave’s study on small shippers' pricing vulnerability fill gaps | Defendants: documentary evidence doesn’t prove conspiracy‑caused injury; McClave’s study is not tied to the 2,037 and does not show individual injuries | Court: other evidence does not replace the damages model; it is insufficient to show common injury for the uninjured subset |
Key Cases Cited
- Comcast Corp. v. Behrend, 569 U.S. 27 (class certification requires a reliable model to prove classwide injury)
- Wal‑Mart Stores, Inc. v. Dukes, 564 U.S. 338 (commonality requires issues capable of classwide resolution)
- Tyson Foods, Inc. v. Bouaphakeo, 577 U.S. 442 (limits on when sample/proof validity belongs at certification vs. summary judgment)
- Daubert v. Merrell Dow Pharm., Inc., 509 U.S. 579 (expert admissibility standard)
- In re Rail Freight Fuel Surcharge Antitrust Litig., 725 F.3d 244 (D.C. Cir. 2013) (remanding certification for Comcast issues)
- In re Rail Freight Fuel Surcharge Antitrust Litig., 292 F. Supp. 3d 14 (D.D.C. 2017) (denying certification on predominance grounds)
- Coopers & Lybrand v. Livesay, 437 U.S. 463 (finality rule for interlocutory orders)
- Fayus Enterprises v. BNSF Ry. Co., 602 F.3d 444 (D.C. Cir. 2010) (prior interlocutory decision in MDL)
- Garcia v. Johanns, 444 F.3d 625 (D.C. Cir. 2006) (standard of review for class‑certification rulings)