After a ruling last week, lawyers at Kirkland & Ellis face the daunting task of convincing a Tulsa jury that PricewaterhouseCoopers shouldn’t have to pay for “one of the most egregious instances of auditor malpractice in Oklahoma history.”

In a Jan. 30 decision, Tulsa County District Court Judge Dana Kuehn largely denied PWC’s motion for summary judgment in the case, which was brought by the litigation trustee of the bankrupt energy transport company SemGroup. Although the judge did knock out breach of fiduciary duty claims against PwC, she mostly sided with the trustee’s lawyers at Quinn Emanuel Urquhart & Sullivan and left the allegations against the auditing firm intact ahead of a scheduled August trial.