C. Counts I and II — Legal Malpractice and Breach of Fiduciary Duty
1. Legal Malpractice-Elements
Legal malpractice based upon negligence requires proof of the following elements: (1) the employment of the defendant attorney, (2) the defendant attorney’s neglect of a reasonable duty, and (3) the negligence resulted in and was the proximate cause of loss to the plaintiff. See Hyden v. Law Firm of McCormick, Forbes, Caraway & Tabor, 115 N.M. 159, 848 P.2d 1086, 1089-90 (1993). To show the neglect of a reasonable duty, “a plaintiff must show, usually through expert testimony, that his or her attorney failed to use the skill, prudence and diligence of an attorney of ordinary skill and capacity.” Id. at 1090. Thus, an expert will testify as to the standard of care (reasonable duty) and how the attorney neglected it.
2. Breach of Fiduciary Duty-Elements
The breach of fiduciary duty claim is also one for legal malpractice, but there is a distinction. See 2 Mallen & Smith, Legal Malpractice § 14.1.5 (4th ed. 1998 Supp.) (“The [breach of fiduciary obligations] tort is a wrong distinct from professional negligence but is still legal malpractice.)” “Legal malpractice based on negligence concerns violations of the standard of care; whereas legal malpractice based upon breach of duty concerns violations of a standard of conduct.” Kilpatrick v. Wiley, Rein & Fielding, 909 P.2d 1283, 1290 (Utah App.1996). The standard of conduct pertains to the lawyer’s two fiduciary obligations — undivided loyalty and confidentiality. 2 Mallen & Smith, Legal Malpractice § 14.1.5 (1998 Supp.). It is possible to have professional negligence without a breach of fiduciary duty, and vice-versa.
The claim for breach of fiduciary duty “corresponds to a cause of action for negligence, substituting the fiduciary duty for the standard of care.” Id. Thus, the elements to be proven include (1) the existence of a fiduciary relationship between the plaintiff and the defendant attorney, (2) breach of that fiduciary relationship by the defendant attorney, and (3) the breach of fiduciary relationship as the proximate cause of loss to the plaintiff. See Kilpatrick, 909 P.2d at 1290; Alleco, Inc. v. Harry & Jeanette Weinberg Found., Inc., 340 Md. 176, 665 A.2d 1038, 1046 (1995).
3. Role of the Rules of Professional Conduct
Both parties rely upon the Rules of Professional Conduct. Those rules provide some guidance in determining the professional obligations of a lawyer, but they do not furnish independent grounds for a legal malpractice claim. See Preamble, R. Prof. Conduct, N.M.R. Ann. (2000); Sanders, Bruin, Coll & Worley, P.A. v. McKay Oil Corp., 123 N.M. 457, 943 P.2d 104, 107 (1997); Garcia v. Rodey, Dickason, Sloan, Akin & Robb, P.A, 106 N.M. 757, 750 P.2d 118, 123 (1988). At the same time, a legal malpractice claim is not barred simply because “its substance enters the realm of conduct covered under the Rules of Professional Conduct.” See Sanders, 943 P.2d at 107.
4. Plaintiff Richter’s Previous Employment of Mr. Van Amberg
Plaintiff Richter has not established his employment of Mr. Van Amberg as to the transactions that form the basis of this lawsuit. Instead, he relies upon a previous representation occurring primarily in 1987, involving different real estate and a different partnership. No evidence suggests Mr. Van Amberg’s representation of Mr. Gibbens, the managing partner of Santa Fe Partners II, involved the same or a substantially related matter to Mr. Van Amberg’s previous representation of Plaintiff Richter. See R. Prof. Conduct 16-109(A). Moreover, the previous representation had been terminated and Plaintiff Richter was a former client; no reasonable trier of fact could find otherwise. Merely because both representations involved