After a judge cited Covington & Burling’s “conscious disregard” for a former client and booted the firm from representing the state of Minnesota in litigation against 3M Corporation, Covington is fighting to salvage its role in the case.

Covington informed the Minnesota Court of Appeals on Tuesday that it is appealing an Oct. 11 decision disqualifying it from representing the Minnesota Attorney General’s Office in an environmental case against 3M, which Covington had represented in other matters until shortly before the case was filed. 3M has accused Covington of “greed-motivated side-switching,” but in Tuesday’s filing Covington maintained it had done nothing wrong, and that “the effect of the ruling below is to reward 3M for an inexplicable sixteen-month delay in moving to disqualify.” Here’s the notice of appeal, filed by Covington’s lawyers at the Minneapolis firm Fredrikson & Byron.

Read the full story in The AmLaw Litigation Daily.