Excluding Expert's Rebuttal Opinion Can Be Grounds to Reverse Jury Verdict

Tim Kowal June 24, 2022

CEB has my article, “Excluding Expert's Rebuttal Opinion Can Be Grounds to Reverse Jury Verdict,” about Kline v. Zimmer, Inc. (May 26, 2022, B302544) ___ Cal.App.5th ___. Here is the link: https://bit.ly/3bqglfY.

The case involved a trial error in which the judge excluded the defendant’s expert to rebut the plaintiff’s expert on causation. The trial court excluded the expert because the expert’s confidence in the opinion did not exceed 50% likelihood.

The Court of Appeal reversed. A defendant’s expert doesn’t have to prove 51% likelihood. The 51% threshold is the plaintiff’s burden of proof, not the defendant’s. And where the excluded rebuttal opinion was the only rebuttal opinion, the exclusion leads to a “one-sided presentation of evidence.” This was a structural error, requiring automatic reversal.

My original blog post is here: https://bit.ly/3tb7OU5.

Tim Kowal is an appellate specialist certified by the California State Bar Board of Legal Specialization. Tim helps trial attorneys and clients win their cases and avoid error on appeal. He co-hosts the Cal. Appellate Law Podcast at CALpodcast.com, and publishes summaries of cases and appellate tips for trial attorneys. Contact Tim at [email protected] or (949) 676-9989.

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— Rubin v. Green (1993) 4 Cal.4th 1187

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Excluding Expert's Rebuttal Opinion Can Be Grounds to Reverse Jury Verdict

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"Moot points have to be settled somehow, once they get thrust upon us. If an assertion cannot be proved, then it must be settled some other way, and nearly all of these ways are unfair to somebody." —T.H. White, The Once and Future King

Show neither partiality to the weak nor deference to the mighty, but judge your fellow men justly. — Leviticus

"At common law, barratry was 'the offense of frequently exciting and stirring up suits and quarrels' (4 Blackstone, Commentaries 134) and was punished as a misdemeanor." — Rubin v. Green (1993) 4 Cal.4th 1187

"A judge is a law student who grades his own papers." — H.L. Mencken

"God made the angels to show Him splendor, … Man He made to serve Him wittily, in the tangle of his mind." — Sir Thomas More in Robert Bolt's A Man for All Seasons

"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." — Plato (427-347 B.C.)

"Upon putting laws into writing, they became even harder to change than before, and a hundred legal fictions rose to reconcile them with reality." — Will Durant

"It may be that the court is thought to be excessively legalistic. I should be sorry to think that it is anything else." — Hon. Sir Owen Dixon, Chief Justice of Australia