The judge overseeing the legal malpractice trial involving Weil, Gotshal & Manges and two of its partners is considering letting the jury hear about another suit against the law firm filed by the pop singer Michael Bolton.

The firm and the two partners, Helene Jaffe and Robert Sugarman, are on trial over allegations they committed malpractice in representing a New Jersey mall boutique in a trade dispute with Italian fashion house Fendi. The owners of Fashion Boutique of Short Hills claim the firm was conflicted because it began representing Prada, a part owner of Fendi, months before the trade dispute went to trial in federal court.