It is critical to a legal malpractice action that the plaintiff prove the “ case within a case ” in order to sue an attorney. In Salans LLP v VBH Properties S.R.L., 2019 NY Slip Op 02611 [1st Dept Apr. 4, 2019], the court held:
plaintiff demonstrated prima facie entitlement to judgment in the legal malpractice counterclaim by showing that defendants could not prove that but for plaintiff’s failure to appear at the TRO hearing the hearing court would have denied the TRO or set a shorter return date (see Weil, Gotshal & Manges, LLP v. Fashion Boutique of Short Hills, Inc., 10 A.D.3d 267, 272, 780 N.Y.S.2d 593 [1st Dept. 2004] [holding that to establish a claim for litigation malpractice the client “ must meet the ‘ case within a case ’ requirement, demonstrating that ‘ but for ’ the attorney’s conduct the client would have prevailed in the underlying matter or would not have sustained any ascertainable damages ”] ). Defendants speculate that had plaintiff appeared at the TRO hearing, injunctive relief may have been denied or the hearing court may have adjourned the case to an earlier date. Such speculation is insufficient to sustain a claim for legal malpractice (see Freeman v. Brecher, 155 A.D.3d 453, 453, 64 N.Y.S.3d 13 [1st Dept. 2017]; Brooks v. Lewin, 21 A.D.3d 731, 734–735, 800 N.Y.S.2d 695 [1st Dept. 2005], lv denied 6 N.Y.3d 713, 816 N.Y.S.2d 749, 849 N.E.2d 972  ).