The South Dakota Supreme Court has upheld a lower court's decision to dismiss a lawsuit filed by Michael Gibson against family members and a law firm due to violations of subpoena rules. This ruling, issued on July 1, 2026, affects Michael Gibson and the defendants, including his brother Greg Gibson, their mother Delores Gibson, and the Gibson Family Limited Partnership (GFLP). The case highlights the importance of adhering to legal procedures and the consequences of failing to do so.
The dispute began when Michael Gibson accused his brother Greg and their mother Delores of acting improperly regarding the management of the Gibson Family Limited Partnership, which was established to manage family farmland. Michael claimed that Greg had unduly influenced Delores, who he argued lacked the mental capacity to make decisions for the partnership. This lawsuit was the third in a series of legal battles between Michael and his family over the management of GFLP.
The South Dakota Supreme Court's ruling comes after a lengthy legal history, including two previous lawsuits filed by Michael against Greg and Delores, both of which he lost. In this latest case, Michael sought access to Delores's medical records and other information through subpoenas, which he issued while a motion to quash those subpoenas was pending. The court found that Michael's attorney had repeatedly violated subpoena rules, leading to the dismissal of the case.
In its ruling, the court affirmed the lower court's decision to dismiss Michael's lawsuit, stating, "Michael's counsel obtained his mother’s medical records through a subpoena while a motion to quash was pending." The court, led by Justice Mark E. Salter, noted that Michael's legal arguments on appeal mirrored those made in the lower court, which had already been rejected.
The South Dakota Supreme Court emphasized the importance of following legal procedures, particularly regarding subpoenas. The court stated that the rules governing subpoenas are in place to protect individuals' rights and privacy. By disregarding these rules, Michael's attorney compromised the integrity of the legal process.
This ruling serves as a warning to litigants about the consequences of violating legal procedures. It underscores the need for attorneys to adhere to the rules and maintain professional standards when handling sensitive information, especially regarding medical records. The court's decision may also have broader implications for future cases involving family disputes and the management of family businesses.
Looking ahead, Michael Gibson may consider appealing the ruling, although the court's decision appears to be final. There are no related cases pending that would affect this ruling. The dismissal of Michael's lawsuit marks a significant moment in the ongoing legal battles within the Gibson family.