Court affirms disqualification of Covington & Burling

Last year I posted a few comments about a case in which 3M Corporation sued the law firm Covington and Burling arguing that the law firm violated its duties to the client by operating under a conflict of interest.  See my initial post on the case here.  The lawsuit alleged that the firm had decided to represent the State of Minnesota against 3M in a case that was substantially related to the representation of 3M in another case.  3M also filed to disqualify the firm from representing the state in that case.  I commented on the allegations here and here.  Eventually, the court granted the motion to disqualify and the firm and the state appealed.  That appeal was decided last week when the Court of Appeals affirmed.  You can read the opinion here.  (Thanks to the Legal Ethics Forum for the link).  You can read a comment on the case here.