A claim alleging a violation of Judiciary Law § 487 is not duplicative of the cause of action alleging legal malpractice, as a violation of § 487 requires an intent to deceive, whereas a legal malpractice claim is based on negligent conduct.
Bill Birds, Inc. v. Stein Law Firm, P.C., NY Slip Op 05743 (2d Dep't August 15, 2018)
Here is the decision.