We commented about the King v. DePuy litigation several years ago because this was one of the cases where Pinnacle Hip plaintiffs tried and failed to use a turncoat expert. Well, this long-running (since 2013) – due mostly to execrable MDL management (8 years with no movement) rather than either parties’ fault – lawsuit is finally over.
You might remember from eight years ago that a consolidation-induced nuclear verdict in the Pinnacle Hip MDL itself was reversed on appeal in part because the plaintiffs lied to the jury how much they paid their expert witnesses. We discussed that here:
Next, the Fifth Circuit found additional grounds to overturn the judgment due to what it called “deception” by the plaintiffs’ attorney regarding plaintiffs’ experts, something we wrote about last year. Plaintiffs classified two of its experts as “non-retained,” meaning not paid. At trial, plaintiffs’ attorney contrasted this with what he called the “bought testimony” of the defendants’ expert. The problem is, however, that plaintiffs’ experts were “bought” too. Before trial, plaintiffs’ attorney donated $10,000 to St. Rita’s Catholic School, the favorite charity of one of the two experts. More blatantly, after trial, plaintiffs paid $65,000 in total to the two experts.
The trial that the plaintiffs lost in King – shockingly to us – involved similar shenanigans. Unlike in the MDL, these plaintiffs got sanctioned for it. The Ninth Circuit affirmance did not discuss what went on in any detail, King v. DePuy Orthopaedics, Inc., 2026 WL 74511 (9th Cir. Jan. 9, 2026), so we looked for, and found the district court’s decision.
[Plaintiffs’ counsel] is challenging the Order granting Defendants award of attorney fees, awarded as a sanction for failing to disclose that he was paying a fact witness $15,000 for 2 hours of testimony. [Counsel] argues that he just received disclosure from Defendants counsel that they are paying an expert in a different case $15,000. [Counsel] says that the Court should consider this “new evidence” to show that his payment to [the implanting surgeon] was reasonable. The Court disagrees.
King v. DePuy Orthopaedics Inc., 2025 WL 3907406, at *1 (D. Ariz. April 29, 2025) (emphasis added), aff’d, 2026 WL 74511 (9th Cir. Jan. 9, 2026). Plaintiffs’ “you did it, too” defense to being sanctioned over witness payments didn’t hold water because, plaintiffs were paying a fact witness, not an expert, and that’s a big difference.
A retained expert is always paid, and the payments are disclosed so they may be properly cross examined and the jury can decide if the payments affected their testimony. [The treating physician] on the other hand was a fact witness whose only job was to testify about the treatment he provided to his patient. He is not paid to give any opinions. . . . Therefore, the two cannot be compared.
Id. Further, the payment that plaintiffs tried to hide was “outrageous” for a mere fact witness, “$15,000 for 2 hours of testimony.” Id. “Additionally, it is important to remember that [counsel] failed to disclose the payment during a hearing at which he said: ‘no one is paying him for his testimony.’” Id. Thus, the district court sanctioned the plaintiffs with an instruction to the jury that the plaintiffs had attempted to conceal their payments to the treater that were large enough to affect that witness’ credibility. After what happened in the Pinnacle Hip MDL, one might think that plaintiffs would know better than to hide a questionable witness payment.
Nope, they didn’t, but the Ninth Circuit did, and affirmed. The sanctions, including curative jury instructions, were quite proper.
[Plaintiffs’] arguments are unavailing. Payments to [the treater] fell within the scope of appellee’s discovery request, and [plaintiffs] had communications with [him] in their possession. The district court was therefore authorized by Rule 37(c)(1) to issue a curative instruction to the jury.
King v. DePuy Orthopaedics, Inc., 2026 WL 74511, at *1 (9th Cir. Jan. 9, 2026). The instructions: (1) concerning plaintiffs’ “effort to withhold [the treater’s] compensation from defendant and the jury,” and that plaintiffs’ “excessive and undisclosed payments . . . may have affected [the witness’] credibility” – were “neither misleading nor inadequate to guide the jury.” Id. at *1. Further, even if there had been error (which there wasn’t), it was harmless because the rest of the instructions “stressed the[ jury’s] role as the final arbiters of fact.” Id. at *2.
And that is the end of the King litigation, after some13 years. Checkmate.
But it’s not the end of our post.
While searching for the affirmed trial court opinion, we also came across another opinion in the run-up to trial in King on motions in limine that we found sufficiently notable on the resolution of recurring evidentiary issues for us to share with our readers. The decision is King v. DePuy Orthopaedics, Inc., 2024 WL 6953089 (D. Ariz. July 9, 2024), and here are seven results that the court reached that defendants may find useful in future trials:
- Plaintiffs were not allowed to use deposition testimony of absent deponents from other Pinnacle Hip cases because they involved unrelated plaintiffs without “any connection . . . other than related subject matter.” Since the defendants “had no opportunity to develop this previous testimony through cross-examination as it pertains to the facts of the current case,” they were not admissible hearsay under Fed. R. Evid. 804(b)(1). Id. at *1.
- As we’ve already discussed, plaintiffs cannot offer the notorious p-side hit piece, Doubt Is Their Product, as “impeachment” because: (1) it is not a learned treatise and (2) any “minimal probative value is substantially outweighed by undue prejudice.” That book can’t be a learned treatise because it is not “reliable.” The “bias” of the book’s author is “clear . . . throughout.” The MDL plaintiffs used the same book, and the Fifth Circuit held that Fed. R. Evid. 403 should have been invoked. The book’s “goal [is] likening Defendants, and possibly their experts, to notable ‘corporate villains’ that many of the jurors likely have heard of and formed negative opinions about,” and thus is properly excluded under Rule 403 as unduly prejudicial. Id. at *2.
- MAUDE device adverse event reports are excluded. Neither side can use them because MAUDE “does not have reporting criteria or demonstrate how [this device] create issues or cause problems for patients.” Id. at *3.
- Foreign adverse event reporting is also excluded because “those databases have different reporting criteria, admission could confuse the jury, and some of the countries have single payer systems which alters the incentives for reporting.” Id.
- As long as plaintiffs attack the defendants’ “post-marketing surveillance,” defendants may introduce evidence that “they did act reasonably with post-market surveillance explaining [defendants’] own approach.” Thus, “if Plaintiffs ‘open the door’ on their own ‘post-market surveillance’ evidence/argument, then Defendants should be able to rebut it with their own theory.” Id. at *4.
- Plaintiffs may not attack the FDA’s §510(k) process as a “loophole.” There is no claim that defendants’ use of this process for this device was “fraudulent” or “illegal,” so plaintiffs’ “loophole” allegation is “unfairly prejudicial because it was the only path available.” Id.
- Subsequent regulatory changes – the FDA’s “2013 proposal and 2016 rule change requiring PMA approval” – are “not relevant to what was happening with [device], any known risks in 2010, and is unfairly prejudicial.” Id.