Roskop Dairy, L.L.C. v. GEA Farm Technologies, Inc., and Midwest Livestock Systems, Inc.

Summary

The Nebraska Supreme Court reviewed a summary judgment ruling in favor of the manufacturer and dealer of a dairy milking-control system. The court addressed expert testimony, causation, product-defect theories, discovery, and prejudgment interest, concluding that the dairy failed to present admissible evidence linking the defendants’ equipment to the alleged damages while reversing the ruling in part concerning the dealer’s counterclaim and prejudgment interest.

Holdings

1. Summary judgment was proper because Roskop Dairy failed to produce admissible evidence creating a genuine issue that the Dematron was the proximate cause of the alleged injury. The defendants established a prima facie case that improper maintenance of non-Dematron components caused the units to detach under vacuum, and Roskop Dairy's evidence relied on speculation and temporal correlation.
2. Proximate cause is a necessary element of claims proceeding under negligence, product-defect theories, or breach of express warranty.
3. The malfunction theory may permit a plaintiff to prove the existence of a product defect circumstantially without identifying a specific defect, but it does not establish proximate cause and cannot relieve the plaintiff of proving the other elements of the claim.
4. A causation opinion based solely on temporal correlation is scientifically unreliable and does not constitute a reasonable inference sufficient to create a genuine issue of material fact.
5. The district court did not abuse its discretion in partially denying the motion to compel or in finding sealed exhibit 9 protected by attorney-client and work-product privileges.
6. Midwest was not entitled to prejudgment interest because its claim was not liquidated before discovery was completed; there was a reasonable controversy concerning Roskop Dairy's right to recover.

Questions Presented

1. Whether the district court properly excluded portions of William Wailes' and Michael Slattery's testimony concerning the mechanical and medical causation of mastitis.
2. Whether Roskop Dairy presented admissible evidence creating a genuine issue of material fact that the Dematron was defective, negligently installed, or the proximate cause of the alleged injuries.
3. Whether the malfunction theory permitted Roskop Dairy to establish defect or causation through circumstantial evidence.
4. Whether the district court abused its discretion in partially denying Roskop Dairy's motion to compel discovery.
5. Whether Midwest's claim for the unpaid purchase balance was liquidated so that prejudgment interest was recoverable.

Disposition

reversed