A recent ruling by the Court of Civil Appeals of Oklahoma has disqualified a law firm from representing a pharmaceutical company in a lawsuit involving the estate of a deceased member. The court's decision affects Cornerstone RX, LLC, and its managing member, Gregory S. Huenergardt, who were found to have a conflict of interest due to previous legal representation involving the deceased member, Kyle Whitehead.
The case, Whitehead v. Cornerstone RX, LLC and Huenergardt, was decided on May 7, 2026, under docket number 122899. The ruling highlights the importance of attorney-client relationships and the ethical obligations lawyers have when representing multiple clients with potentially conflicting interests.
The dispute arose after Kyle Whitehead passed away in March 2023. His wife, Lora Whitehead, filed a lawsuit on behalf of his estate, alleging that Huenergardt attempted to exclude the estate from Cornerstone RX and set up a new company to continue its business operations. This situation led to claims of breach of fiduciary duty and violations of the operating agreement governing Cornerstone RX.
Background
In the case, Lora Whitehead serves as the personal representative of her late husband's estate and claims to have succeeded to his 50% interest in Cornerstone RX, as outlined in the operating agreement. Whitehead and Huenergardt, both pharmacists, had established Cornerstone RX to secure favorable pricing for pharmaceuticals.
Before Whitehead's death, attorney Craig Riffel represented both him and Huenergardt in various matters, including the formation of Cornerstone RX. Following Whitehead's passing, Lora alleged that Huenergardt was trying to undermine her rights as the estate's representative. This prompted her to file a motion to disqualify Riffel and his firm, Riffel, Riffel, and Benham, from representing Huenergardt and Cornerstone RX in the ongoing litigation.
The estate argued that Riffel had a conflict of interest due to his prior representation of Whitehead and his involvement in the matters related to Cornerstone RX. The trial court agreed and disqualified the Riffel Firm, leading to the appeal by Huenergardt and Cornerstone RX.
The Ruling
The Court of Civil Appeals upheld the trial court's decision to disqualify the Riffel Firm from representing Huenergardt and Cornerstone RX. The court found that an attorney-client relationship existed between Riffel and Whitehead, and that the current litigation was substantially related to Riffel's prior representation of Whitehead.
The court ruled, "the present litigation involves a matter substantially related to the subject of the movement prior representation," indicating that the interests of the Riffel Firm's current clients were adverse to the estate.
Chief Judge Stacie L. Hixon noted that the trial court had correctly identified the conflict of interest, stating that Riffel's extensive knowledge about the workings of Cornerstone RX and his previous representation of both Whitehead and Huenergardt created an inherent conflict. The court emphasized the importance of maintaining the integrity of the judicial process when disqualifying counsel.
Impact
This ruling sets a significant precedent regarding the ethical obligations of attorneys when representing multiple clients who may have conflicting interests. It underscores the necessity for lawyers to maintain loyalty and avoid situations where their representation could harm a former client.
The decision affects not only the parties involved in this case but also serves as a reminder to legal practitioners about the importance of adhering to ethical standards. The ruling may influence how law firms approach representation in cases where multiple clients are involved, particularly in business disputes.
What's Next
The defendants, Huenergardt and Cornerstone RX, may seek to appeal the ruling to a higher court, although details regarding any potential appeal were not available in the court filing. The estate's claims against Huenergardt and Cornerstone RX will continue in the absence of the Riffel Firm's representation.