The Arizona Supreme Court made a significant ruling regarding wrongful civil proceedings in the case of John Accursio v. Tree House Labs, LLC, No. CV-25-0028-PR, filed on September 10, 2026. The court decided that an individual can pursue a wrongful institution of civil proceedings (WICP) claim against someone who files a charge against them with the State Bar of Arizona. This ruling has implications for both legal professionals and individuals who may find themselves in similar situations.

This case revolves around a dispute between John Accursio, a lawyer, and Clark Wu, a member of the law firm BB Group, LLC, who filed a complaint against Accursio with the State Bar. The court's decision clarifies the legal boundaries regarding the filing of charges against lawyers and the potential for legal repercussions stemming from such actions.

Background

John Accursio, the plaintiff in this case, is a lawyer who had been involved in a legal dispute concerning ownership interests in Tree House Labs, LLC. In 2021, a lawsuit was filed in Maricopa County Superior Court, where Wu and his firm represented the plaintiffs while Accursio represented the defendants. Accursio raised concerns about potential conflicts of interest regarding Wu's representation. The underlying lawsuit was dismissed in 2022.

Following the dismissal, Accursio and his co-counsel sought records from Wu's clients but faced resistance. Wu then accused Accursio of unauthorized practice of law in Arizona. Accursio sought guidance from the State Bar, which indicated that his representation was permissible under Arizona's Ethical Rules. In response, Accursio filed a charge against Wu for potential misconduct, which led Wu to file a counter charge against Accursio, alleging unauthorized practice of law.

Accursio's charge was ultimately dismissed by the State Bar due to insufficient evidence. However, he claimed that Wu's filing of the charge against him was baseless and retaliatory, prompting him to file a lawsuit against Wu and BB Group, LLC, alleging wrongful institution of civil proceedings and aiding and abetting.

The Ruling

The Arizona Supreme Court ruled that the filing of a charge with the State Bar can indeed serve as the basis for a WICP claim. Justice Kathryn H. King authored the opinion, joined by Chief Justice Timmer, Vice Chief Justice Lopez, and Justices Bolick and Beene. The court stated, "We conclude the filing of such a charge may serve as the predicate 'civil proceeding' for a WICP claim." This ruling reverses the lower court's dismissal of Accursio's claims and remands the case for further proceedings.

The court clarified that while communications made to the State Bar regarding lawyer misconduct are privileged, this does not prevent a WICP claim from being pursued. The court noted that a plaintiff can rely on non-privileged facts to support their claims. The ruling also addressed when a civil proceeding commences, indicating that it depends on the nature of the charge filed with the State Bar.

Impact

This ruling has significant implications for both legal professionals and individuals who may face similar situations in the future. It establishes that filing a charge with the State Bar is not immune from legal scrutiny and may lead to WICP claims if the charge is deemed baseless or retaliatory. This decision could potentially deter individuals from filing frivolous charges against lawyers, knowing that they could face legal consequences.

Furthermore, the ruling sets a precedent for how wrongful institution of civil proceedings claims can be interpreted in relation to charges filed with the State Bar. It emphasizes the importance of the context in which such charges are made and the potential for legal repercussions if they are found to be without merit.

What's Next

The case has been remanded to the trial court, where it will determine whether Accursio can prove his WICP claim without relying on privileged communications. The ruling opens the door for further legal proceedings and clarifications on the matter. It remains to be seen if the defendants will seek to appeal the Supreme Court's decision.