Express Scripts, Inc. v. Crawford, (Del. Ch., Jan. 25, 2007), read opinion here. This Chancery Court letter opinion denies a Motion to Disqualify that was filed based on Rule 1.9 of the Delaware Lawyers’ Rules of Professional Conduct. The court explains the policy reasons behind the rule and the need to compare: (i) what confidential information was disclosed by the former client, with (ii) the potential prejudice to the opposing party in the current case due to disqualification of his counsel. Weighing against the movant here was its delay in bringing the motion (in the context of expedited litigation) and the prejudice that would befall the party whose counsel would be disqualified–although the court cited to other Delaware cases that disqualified attorneys on the eve of trial.