Howard v. A.W. Chesterton Co.

Summary

The Pennsylvania Supreme Court vacated the Superior Court's decision and reversed the order denying summary judgment in an asbestos-exposure case after the plaintiffs conceded that the record did not establish sufficiently regular and frequent exposure to the defendants' products. The Court reaffirmed that the any-exposure theory cannot establish substantial-factor causation for dose-responsive diseases, that experts must consider dose and provide an individualized exposure assessment, and that de minimis exposure may be insufficient. The case was remanded for reinstatement of the common pleas court's summary judgment order.

Holdings

1. The appellees' concession required vacatur of the Superior Court's opinion and reversal of its order, with reinstatement of the common pleas court's summary judgment order.
2. The theory that every exposure, no matter how small, is substantially causative may not be relied upon to establish substantial-factor causation for a dose-responsive disease.
3. Bare proof of some de minimis exposure to a defendant's product is insufficient to establish substantial-factor causation for a dose-responsive disease.
4. An expert addressing substantial-factor causation in a dose-responsive disease case must perform some reasoned, individualized assessment of the plaintiff's or decedent's exposure history and may not ignore dose.
5. Summary judgment is an available mechanism where only bare de minimis exposure can be shown and the expert's substantial-factor causation opinion rests on the any-exposure theory.

Questions Presented

1. Whether the Superior Court should be reversed after the appellees conceded that the record failed to establish sufficiently regular and frequent exposure to respirable asbestos fibers from the appellants' products.
2. Whether, in dose-responsive disease cases, the any-exposure theory may establish substantial-factor causation.
3. Whether bare proof of de minimis exposure and expert testimony lacking a reasoned, individualized assessment of the plaintiff's or decedent's exposure history can defeat summary judgment.

Disposition

reversed_and_remanded