Seventh Circuit Requires Expert Testimony on Consumer Expectations Test for Design Defect
It's always nice to do a post that gets back to the basics of product liability law. And so I bring you Federici v. Ford Motor Co., Nos. 10-2428 and 10-2637, Slip op. (7th Cir. Sept. 19, 2011), in which Chief Judge Frank Easterbrook was faced with the question whether a plaintiff, in proving an automotive design defect case under Illinois's consumer expectations test, was required to introduce expert evidence in support of his claim.
The facts were simple: plaintiffs' 1993 Ford Explorer was struck near the left rear wheel by a car going 30 miles per hour and rolled over, injuring the plaintiffs. Plaintiffs filed the suit in state court, but it was removed on diversity grounds and (surprisingly to me) the parties consented to final decision by a magistrate. At the close of discovery, plaintiffs had no expert on automotive design, so Ford moved for summary judgment, which the magistrate judge granted.
In my book, any case where the plaintiffs' lawyer either can't find or won't spend money on an expert on the design of the product at issue is probably a dog of a case. From Chief Judge Easterbrook's opinion, however, we cannot determine why plaintiffs had no expert, only that they had none.
Plaintiffs' argument was simple. Illinois has two tests for proving design defect -- a risk-utility balancing and a consumer expectations test -- and they do not need an expert to tell jurors what consumers expect, as that is within the jurors' experience.
Chief Judge Easterbrook noted that the court was a bit at sea, since the Illinois Supreme Court had not addressed whether a design defect claim on a complex product could survive without expert proof. Slip op. at 3. Several intermediate appellate decisions had required expert testimony, however. Id.
Moreover, there was the question of whether this was an issue of state law or federal law. The parties (and the magistrate judge below) had assumed that it was a matter of state law, reasoning that the quality of proof was part of the claim's substantive elements. The Seventh Circuit clearly believed it was an issue of federal law as an evidentiary issue of what proof was essential, reasoning that the consumer-expectation test and the risk-utility test were not separate causes of action, but mere methods of proof of demonstrating strict liability design defect. Slip op. at 4. However, the court reserved deciding the issue. Id. at 7.
Instead, the court established from the Illinois Supreme Court's decision in Mikolajczyk v. Ford Motor Co., 231 Ill. 2d 516 (2008), that the risk-utility test in Illinois incorporates consumer expectations as one element of the risk-utility balancing and, as such, expert evidence is necessary even where a plaintiff relies on consumer expectations to prove design defect. Slip op. at 6-7. The court observed:
Did the design decisions that went into the 1993 Ford Explorer even contribute to the rollover? Causation is a question about physics, and design options are the province of engineers. Jurors own cars, but people own lots of products without being able to explain (or even understand) the principles behind their construction and operation. . . . [M]ost people can't explain what makes a bicycle or a toilet work. Cars are far more complex.
. . . The record doesn't even tell us even why this car rolled over, let alone what cars usually do in particular kinds of collisions--or what design changes could reduce the rollover rate, by how much. . . . [W]hen wheels are perpendicular to the line of travel, a tilt in the direction of travel can put the center of gravity outside the wheelbase and the car will roll over. Many articles available on the Internet discuss the physics of this process. Understanding requires some geometry and algebra; jurors' unguided intuitions will not solve the equations. Without an expert's assistance the decision would depend on speculation, which cannot establish causation--an issue on which plaintiffs bear both the burden of production and the risk of non-persuasion.
Slip op. at 7-9 (citations omitted).
In discussing how federal law would treat the issue, the court noted that "[f]ederal law often requires expert evidence about consumers' knowledge and behavior, because jurors are supposed to decide on the basis of the record rather than their own intuitions and assumptions." Slip op. at 5. Thus, experts testify in trademark litigation on what about packaging or messaging confuses consumers. And in Fair Credit Reporting Act and Fair Debt Collection Act cases, they opine on what is confusing to unsophisticated borrowers. "Jurors know less about product design than they know about what confuses people who buy toothpaste or borrow $10,000." Slip op. at 5.
Moreover, the sample size of federal jury is far too small to reach any reliable conclusions about consumer expectations. "Many federal civil cases are resolved by six-person juries, and none by more than twelve," the court observed. "That is too few to reveal what expectations consumers as a whole will have." Slip op. at 5.
The decision in Federici makes a strong case for why expert evidence is absolutely necessary to meet a plaintiff's burden of proof and burden of persuasion on the issue of design defect in a complex product liability suit -- even in a state that allows proof under the consumer expectations test.


