Wilson Elser Moskowitz Edelman & Dicker and one of its prominent partners are at loggerheads as the firm attempts to withdraw from a controversial case in which the partner and one of the firm’s clients are under investigation for criminal contempt.

Longtime partner Richard Lerner, cochair of the appellate practice at Wilson Elser, and the client, Long Island attorney Frederick Oberlander, claim the firm went around both their backs to get out of a tangled case. The two are attempting to keep Lerner on the case, even if that means Lerner has to leave the firm where he has practiced since 1989.