Robroy Industries-Texas LLC v. Thomas & Betts Corporation
2:15-cv-00512
E.D. Tex.Apr 10, 2017Background
- Parties: Robroy (plaintiffs) sued Thomas & Betts (T&B) alleging false advertising and sought damages; each side retained economic/forensic expert witnesses (Chase A. Perry for Robroy; Ambreen Salters for T&B).
- Procedural posture: Motions to exclude expert testimony—Robroy moved to exclude Salters (granted in part, denied in part); T&B moved to exclude Perry (denied).
- Perry is a damages expert who expressly assumed liability/causation for purposes of calculating damages and provided ranges for disgorgement ($8.1M–$22.9M) and lost profits ($6.6M–$18.7M), based on project-level estimates using T&B documents and witness testimony.
- Salters is an economist offering opinions on causation, purchase-decision drivers in the PVC-coated conduit market, the reliability of Perry’s inputs, and alternative damages calculations; much of her causation material rests on depositions and company documents.
- The court refused to admit expert reports themselves (hearsay) absent stipulation, and emphasized experts cannot merely parrot case documents or serve as mouthpieces for a party’s theory.
- Core evidentiary rulings: Perry may testify as damages expert while assuming liability; his reliance on imperfect data affects weight not admissibility. Many of Salters’ causation opinions and any testimony that simply summarizes depositions/documents without specialized industry expertise were excluded; her economic critiques of Perry’s damages methods remain admissible.
Issues
| Issue | Plaintiff's Argument (Robroy) | Defendant's Argument (T&B) | Held |
|---|---|---|---|
| Admissibility of opposing expert’s causation opinions | Salters’ causation opinions are unreliable, impermissible legal conclusions, and largely repeat record evidence | Salters should be allowed to show lack of causal nexus between T&B’s statements and Robroy’s injuries | Court: Excluded Salters’ causation opinions to the extent they merely regurgitate depositions/documents and where she lacks industry expertise; permitted limited use to critique damages assumptions |
| Whether damages expert may assume liability/causation | Perry is limited to damages and may assume liability for calculation purposes | Perry must establish a causal link between the alleged false statements and specific projects to be admissible | Court: Damages expert may assume liability; Perry’s failure to independently prove causation goes to weight, not admissibility; T&B’s motion denied |
| Reliability of data and methods underlying Perry’s damages ranges | Perry used best available sources and T&B’s own productions; gaps were due to incomplete discovery by T&B | Perry relied on speculative, unreliable data (emails, guesses, forecasts) to create large, unsupported ranges | Court: Use of varying source data was permissible given discovery limitations; challenges affect weight and cross-examination, not exclusion |
| Expert testimony as a vehicle to summarize evidence | Salters’ report largely repeats deposition extracts and exhibits and thus would improperly present case theory as expert opinion | T&B contends Salters can explain market factors and critique Perry using documents | Court: Experts cannot simply be mouthpieces; barred Salters from presenting substantive factual summaries or industry conclusions unsupported by her expertise, but allowed her to critique Perry’s economic analyses and offer alternative calculations |
Key Cases Cited
- U.S. Gypsum Co. v. Lafarge N. Am., 670 F. Supp. 2d 737 (N.D. Ill. 2009) (damages expert may assume liability and limit testimony to damages)
- IQ Prods. Co. v. Pennzoil Prods. Co., 305 F.3d 368 (5th Cir. 2002) (expert testimony on causation must rest on reliable market research when offered to prove consumer response)
- Seatrax, Inc. v. Sonbeck Int’l, Inc., 200 F.3d 358 (5th Cir. 2000) (limits on using expert testimony to introduce otherwise inadmissible factual evidence)
- Factory Mut. Ins. Co. v. Alon USA LP, 705 F.3d 518 (5th Cir. 2013) (Rule 703 does not permit experts to become mouthpieces for out-of-court statements)
- Schlotzsky’s, Ltd. v. Sterling Purchasing & Nat’l Distrib. Co., Inc., 520 F.3d 393 (5th Cir. 2008) (after liability under Lanham Act, remedies like disgorgement and damages are considered under equitable principles)
- Salas v. Carpenter, 980 F.2d 299 (5th Cir. 1992) (expert must bring more to the jury than lawyers’ arguments; courts should insist on substantive expertise)