An attorney who submits filings containing fabricated or unsupported legal authority—including hallucinated citations generated by artificial intelligence—violates the duty of reasonable inquiry under MCR 1.109(E)(5), and such conduct on appeal supports sanctions under MCR 7.216(C)(1).

The Supreme Court issued an order on the long-awaited non-refundable retainer case pending before it in Cooper v Attorney Grievance Commission. In that case, the client hired an attorney to represent her in a divorce action.