Estate of Williamson — Iowa appeals court upholds dismissal over defective medical-malpractice certificates

Case
Estate of Emily C. Williamson, by its Administrator, Aaron Williamson, and Aaron Williamson, as parent and next best friend of M.R.W. and C.E.W., Minors, v. Great River Health System, Inc., et al.
Court
Iowa Court of Appeals
Judge
Ahlers, P.J.; Badding, J.; Langholz, J.
Date Decided
September 2, 2026
Docket No.
24-1609
Topics
Medical malpractice; Certificates of merit; Civil procedure; Waiver
Source
Read the full opinion

Background

The estate of Emily Williamson and her minor children sued eight medical providers, alleging that malpractice during a six-month period in late 2021 and early 2022 caused Williamson’s death. The estate also asserted related claims but made no separate appellate arguments about them.

In June 2024, more than four months before the dispositive-motion deadline, the providers moved to dismiss. They argued that the estate’s certificates of merit did not meet Iowa Code section 147.140 because they were neither sworn affidavits nor signed under penalty of perjury. The Johnson County District Court agreed and dismissed the action.

The Court’s Holding

The Iowa Court of Appeals affirmed. The certificates, although labeled “Certificate of Merit Affidavit” and stating that the experts affirmed their contents in compliance with section 147.140, lacked a notarial jurat establishing that an oath had been administered. They also contained no statement that the experts signed under penalty of perjury.

Under controlling Iowa Supreme Court precedent, substantial compliance requires either an actual affidavit administered before an authorized person or a document complying with Iowa Code section 622.1 through penalty-of-perjury language. The court also rejected the estate’s vagueness challenge and its waiver, estoppel, and forfeiture arguments because the providers sought dismissal before the dispositive-motion deadline.

Key Takeaways

  • A certificate of merit must be sworn before an authorized person or signed under penalty of perjury.
  • Calling a document an affidavit does not make it one without proof that an oath was administered.
  • A defendant preserves a section 147.140 challenge by seeking dismissal before the dispositive-motion deadline.

Why It Matters

The decision applies Iowa Supreme Court precedent strictly to the certificate-of-merit requirement in medical-malpractice cases. Plaintiffs must ensure that expert certificates use a legally valid oath or an express penalty-of-perjury declaration before filing.

For defendants, the ruling confirms that a certificate-of-merit objection remains timely when raised by the dispositive-motion deadline, even if discovery or expert-designation activity has occurred first.

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