What is an Affidavit of Merit? The Crucial First Step in Delaware Medical Negligence Claims

Current as of: September 15, 2026 Medical Malpractice Delaware
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To file a medical malpractice lawsuit in Delaware, state law (18 Del. C. § 6853) requires you to submit an Affidavit of Merit signed by an independent medical expert, unless a statutory exception applies. Without this document or an extension, the court will dismiss your case.

When a patient is harmed by a surgical error, a missed diagnosis, or a medication mistake in Dover, Newark, or Wilmington, the natural reaction is to want to sue the responsible doctor immediately. However, Delaware law does not allow patients to simply file a lawsuit and hope for the best. To prevent frivolous lawsuits from clogging the court system, the state requires a massive hurdle to be cleared before a case can even begin. Understanding what an Affidavit of Merit is serves as the crucial first step in any Delaware medical negligence claim.

An Affidavit of Merit acts as a gatekeeper. It is a sworn statement from another doctor confirming that your claim has genuine medical validity. Without it, your lawsuit is dead on arrival. Gathering the necessary medical records and finding a doctor willing to testify against another doctor takes significant time and resources. If you believe you have a valid case, you can find a dedicated medical malpractice attorney in our US Lawyer directory who has the network to secure this vital document for you.

The Affidavit of Merit Requirement in Delaware

Under 18 Del. C. § 6853, no healthcare negligence lawsuit can be filed in the state without an accompanying Form Affidavit of Merit, Delaware, Superior Court, Medical Negligence Affidavit of Merit, unless the complaint qualifies for a statutory rebuttable inference exception under 18 Del. C. § 6853(b). This requirement applies whether you are suing a massive hospital system, a private practice physician, or an individual nurse.

What is the Affidavit of Merit?

The Affidavit is a formally drafted, notarized document. In it, an independent medical expert swears under oath that they have reviewed your medical records and that, in their professional opinion, there are reasonable grounds to believe the treating doctor breached the applicable standard of care. Furthermore, the expert must state that this breach directly caused your injuries. This document must be filed under seal with the Delaware Superior Court, Dover (or the relevant county court) at the exact time the lawsuit complaint is filed.

Who Qualifies as a Medical Expert?

Delaware sets strict rules on who can sign the Affidavit. You cannot simply ask your family doctor to sign off on a botched brain surgery case. Under 18 Del. C. § 6853(c), the reviewing expert must be a licensed physician who, in the 3 years immediately preceding the alleged negligent act, was engaged in the treatment of patients and/or teaching in the same or similar field of medicine as the defendant. Furthermore, the expert must be Board-Certified in that specialty if the defendant healthcare provider is Board-Certified.

What Happens if the Affidavit is Missing?

Unless your claim meets a statutory exception under 18 Del. C. § 6853(e)-such as an unintentionally left foreign object, an explosion or fire during treatment, or surgery performed on the wrong patient or limb-the consequences of failing to file an affidavit are severe. As established in Beckett v. Beebe Medical Center, Inc., 897 A.2d 753 (DE Supreme Court 2006), compliance is strictly enforced through in camera judicial review. If your lawyer files a medical malpractice complaint without attaching a valid Affidavit of Merit or obtaining an extension, the court clerk can refuse to docket the complaint, or the defense attorney will file a Motion to Dismiss under Del. Super. Ct. Civ. R. 12(b)(6), leading to the immediate dismissal of your case.

Requesting an Extension

Because finding a highly specialized expert takes time, Delaware law allows a small buffer. If the statute of limitations is rapidly approaching and your lawyer has not yet secured the Affidavit, they can file a formal motion asking the court for a 60-day extension. The judge will typically grant this extension to allow your legal team to finalize the expert review and submit the completed Affidavit.

How Lawyers Find Board-Certified Experts

Finding a doctor willing to testify against a peer is challenging. Experienced Delaware medical malpractice attorneys rely on national medical consulting firms and proprietary networks of retired or out-of-state physicians. Because Delaware is a small state, local doctors often know each other and may have conflicts of interest. Therefore, lawyers frequently hire Board-Certified experts from neighboring states like Pennsylvania, Maryland, or New Jersey to provide a completely unbiased review of the records.

The Financial Costs of Securing an Expert

  • Record Retrieval: Before an expert can review the case, your lawyer must order hundreds or thousands of pages of medical records from the hospital, which can cost $200 to $1,000 in administrative fees.
  • Expert Review Fees: Board-Certified doctors charge significant hourly rates to review files. Obtaining a signed Affidavit of Merit usually costs between $2,500 and $7,500 upfront, depending on the complexity of the medical specialty (e.g., neurosurgery vs. general practice).
  • Who Pays: If you hire a lawyer on a contingency fee, the law firm will advance these thousands of dollars on your behalf. You only repay these costs if the lawyer wins a settlement or verdict for you.

Expert Qualification Requirements

Requirement TypeDelaware Legal Standard (18 Del. C. § 6853)
Medical LicenseMust hold a valid, unrestricted license to practice medicine as of the date of the affidavit.
Specialty MatchMust be in the same or similar field of medicine as the defendant doctor.
ExperienceMust have been engaged in the treatment of patients and/or teaching in the same or similar field for the 3 years immediately preceding the alleged negligent act.
Board CertificationMust be Board-Certified in the same or similar field of medicine if the defendant or defendants is Board-Certified.

Frequently Asked Questions (FAQ)

Does the defendant doctor get to read the Affidavit right away?

No. In Delaware, the Affidavit of Merit is filed under seal. The judge reviews it in private to ensure it meets the legal requirements before allowing the case to proceed.

Can a nurse sign an Affidavit against a doctor?

No. Under the law, the expert must be matched to the profession. A physician must review a physician, and a registered nurse must review a registered nurse.

Is the Affidavit the only time the expert is needed?

No. The Affidavit just opens the door. That same expert (or another similar expert) will later have to give a deposition and potentially testify live at your jury trial.

Where can I find a lawyer who can get this Affidavit for me?

You can locate an experienced medical negligence law firm with access to top-tier medical experts by searching our comprehensive US Lawyer directory.


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