Expert Witness Conflicts of Interest: How to Avoid Disqualification

Ensuring your expert is conflict-free and well-prepared is crucial for trial success, as credibility and testimony can significantly impact the case's outcome.

Attorney reading documents

The process of retaining, preparing, and strategizing with an expert can be stressful, especially during the chaos of a trial. However, all of that preparation is of no value unless your expert’s testimony is admitted into evidence. If a conflict of interest exists with your experts, then there is a chance that they will be disqualified and their testimony will be excluded. It can seem daunting to review an expert’s entire history to ensure that no conflicts of interest exist. But by keeping these things in mind, you can potentially avoid a catastrophe at trial.

At trial, even if your expert survives pre-trial challenges, their credibility and qualifications will likely come under intense scrutiny during cross-examination. Opposing counsel may attempt to discredit the expert by highlighting inconsistencies or potential biases, which could undermine their testimony. Additionally, if the expert struggles to clearly explain complex concepts, the jury may dismiss their input altogether. Therefore, it’s crucial not only to vet your experts for conflicts but also to ensure they are well-prepared for the unique pressures and dynamics of testifying in court. A strong performance at trial can significantly sway the outcome of a case.

How to Avoid Conflicts of Interest

To avoid conflicts of interest in the first place, it’s crucial to work with experts who have been carefully vetted. Our Expert Search service is designed to match the right experts to your case, ensuring they are free from any potential biases or conflicting relationships. Before retaining, attorneys have the opportunity to meet with these experts to confirm their suitability, minimizing the risk of any conflicts emerging later in the case.

Ideally, an expert should have no connection to the opposing party. However, depending upon the expert’s profession and the size of the jurisdiction, it is not always possible. Before retaining an expert, it is important to conduct a thorough background check on the witness’ case history and affiliations. An expert witness agency can be of particular help in this regard.

A comprehensive retainer agreement is also vital to protecting the case against a conflict of interest. The agreement should outline the work performed, the materials the expert will receive, and whether the expert will testify at trial so that the parameters of the relationship can be defined. A confidentiality clause should also be included, stating that the expert will be obtaining confidential information during the course of the relationship and it should not be disseminated during any future proceedings.

How to Identify an Expert Witness’ Conflict of Interest

To identify an expert witness’s conflict of interest, follow these steps:

  • Review prior testimony: Search databases like LexisNexis or Westlaw for past cases where the expert testified.
  • Examine professional relationships: Investigate any professional connections that might suggest bias.
  • Check financial ties: Look at public records or financial disclosures to uncover any relevant financial interests.
  • Research professional affiliations: Identify affiliations with businesses, advocacy groups, or professional organizations that could influence the expert’s objectivity.
  • Examine public statements: Review articles, interviews, or social media activity for any positions that could signal a conflict.

This comprehensive review helps ensure your expert's credibility while also providing an opportunity to investigate the opposition's expert for any potential weaknesses or conflicts.

How Expert Radar Identifies Conflicts of Interest

While identifying an expert witness’s conflict of interest can be a time-consuming process, using tools like Expert Radar makes it significantly easier and faster. Expert Radar uses AI to dive deep into an expert’s litigation history, challenges, depositions, and court documents, providing a comprehensive view in minutes. It not only reviews the expert’s prior testimony but also examines their qualifications, background, and credibility to deliver actionable insights. This solution streamlines the process, allowing you to quickly vet not only your own expert but also the opposition’s expert, ensuring you’re fully prepared to challenge any potential conflicts or credibility issues before trial.

How Does the Court Resolve a Conflict?

Generally, conflicts of interest most often arise in terms of confidentiality issues and the expert’s duty of loyalty. A potential conflict of interest may exist if the expert has been formerly employed by or previously hired as an expert for the opposing side. The main concern for the court is whether the expert’s affiliations with the adversary provided him with confidential information, and if so, whether that can prejudice the party.

Surprisingly, there is scant case law regarding expert disqualification, as it is often seen as a drastic last measure. Nonetheless, courts throughout the country generally follow a three-prong analysis when deciding whether an expert should be disqualified from testifying based on his previous relationship with the opposing party.

Questions in Expert Disqualification Analysis

  1. Was it reasonable for the opposing party to believe a confidential relationship existed with the expert?
  2. Was confidential or privileged information disclosed by the opposing party to the expert?
  3. What is the public interest in admitting (or excluding) the expert’s testimony?

When deciding whether it was reasonable for the opposing party to believe a confidential relationship existed with the expert, the courts consider the details surrounding the relationship, such as the parties’ frequency of contact, any formal retainer agreements, the amount of work performed and work product generated, and whether the expert planned on testifying as a witness.

Additional Factors in Expert Disqualification Decisions

Typically, an expert will not be disqualified if he only briefly met with the opposing party, was not retained, and was not provided any confidential information relevant to the case. Likewise, it is important to note that a confidential relationship alone is not sufficient to disqualify the witness; the witness must have actually obtained confidential information. As to the second prong, confidential or privileged information includes matters covered by attorney-client privilege and/or attorney work-product protections. Other matters that are considered confidential are the opposing party’s trial strategy, the case’s strengths and weaknesses, and any anticipated defenses. Information that is “purely technical” or would have otherwise been discoverable during the course of litigation is not considered confidential. In analyzing any public interest concerns, the courts consider issues such as:

  • the prejudice that may occur to the parties if the expert is or is not qualified
  • the appearance of a conflict of interest
  • whether a new expert can be retained and the burden it will cause the party
  • whether both parties have access to experts who possess the necessary knowledge and skill required to testify
  • the danger that unscrupulous attorneys and clients may hire experts solely to prevent them from representing the opposing party

Expert Disqualification from Party-Switching

Generally, a motion to disqualify an expert is more likely to be granted when it involves an expert who switched parties during the litigation. For example, in In re Diet Drugs Products Liability Litigation, No. 07-20144, 2009 WL 1886131 (E.D. Pa. 2009), defense counsel for two drug manufacturers retained an expert for the case, which resulted in the expert’s formal, exclusive engagement and meetings between counsel and the expert concerning trial strategy. However, the expert was then engaged by plaintiff and planned to testify against the defendants in the plaintiff’s product liability suit. The Court disqualified the witness, finding that a relationship existed between the expert and defendants during which the expert gained confidential information related to the litigation.

In contrast, in Allstate Insurance Co. v. Electrolux Home Products, Inc., Id. 27. 840 F. Supp. 2d 1072, 1084 (N.D. Ill. 2012), the Court held that disqualification of an expert was not warranted when the expert had previously testified for a third party in another proceeding that was deemed adverse to the moving party. Although the expert had access to confidential information, the Court held that there was no prior direct relationship between the expert and the party seeking the disqualification. The Court admitted his testimony under the condition that no reference to made to the confidential information of the prior case.

Interestingly, an attorney may also be disqualified due to an expert witness conflict. Courts have disqualified the attorney of record when the lawyer purposefully retains or communicates with experts currently or formerly associated with the opposing party.

About the author

Anjelica Cappellino, J.D.

Anjelica Cappellino, J.D.

Anjelica Cappellino, Esq., a New York Law School alumna and psychology graduate from St. John’s University, is an accomplished attorney at Meringolo & Associates, P.C. She specializes in federal criminal defense and civil litigation, with significant experience in high-profile cases across New York’s Southern and Eastern Districts. Her notable work includes involvement in complex cases such as United States v. Joseph Merlino, related to racketeering, and U.S. v. Jimmy Cournoyer, concerning drug trafficking and criminal enterprise.

Ms. Cappellino has effectively represented clients in sentencing preparations, often achieving reduced sentences. She has also actively participated in federal civil litigation, showcasing her diverse legal skill set. Her co-authored article in the Albany Law Review on the Federal Sentencing Guidelines underscores her deep understanding of federal sentencing and its legal nuances. Cappellino's expertise in both trial and litigation marks her as a proficient attorney in federal criminal and civil law.

background image

Subscribe to our newsletter

Join our newsletter to stay up to date on legal news, insights and product updates from Expert Institute.