International Society of Primerus Law Firms
Peggy A. Tomsic
Practice Areas:

Salt Lake City Attorney
Peggy A. Tomsic

Phone: 801.359.9000


Languages: English

For more than 25 years, Peggy Tomsic has successfully represented defendants and plaintiffs in trials and appeals involving business litigation in federal and state courts in the Intermountain West, in California, and on the East Coast. Her business litigation practice includes trade dress, trademark, and patent infringement; breach of contract; breach of fiduciary duty; common law fraud; securities fraud; and eminent domain. She also has extensive experience representing clients in mediation, arbitration, and grand jury proceedings. In 2008, Peggy expanded her practice to include serving as a mediator and arbitrator. Peggy was awarded an AV rating by Martindale-Hubbell (TM) in 1994. She was recognized by her peers from 2006-2009 as one of the Legal Elite in Utah; was recognized in 2007, 2008, and 2009 in Super Lawyers (TM) as one of the Top Attorneys in Business Litigation; and was listed in 2008-2009 in Marquis Who’s Who in America. Peggy was born in Price, Utah and grew up in Moab, Utah. Peggy has been named in Super Lawyers (TM) magazine as one of the top attorneys for 2007-2009 in the Mountain States region. Peggy was co-counsel with Magleby Cataxinos & Greenwood partner James E. Magleby in a more than five-week jury trial, in which the firm won a unanimous verdict of over $133 million for the firm’s clients in a theft of trade secret, breach of Confidentiality Agreement, and breach of fiduciary duty case. The jury verdict was affirmed by the Utah Supreme Court in May 2016.

Areas of Practice:

  • Arbitration
  • Mediation
  • Deceptive Trade Practices
  • RICO Act
  • Unfair Competition
  • Contract Litigation
  • Eminent Domain
  • Construction Contract Litigation
  • Copyright Litigation
  • Intellectual Property Litigation
  • Patent Litigation
  • Trade Dress Litigation
  • Trade Secret Litigation
  • Trademark Litigation
  • Complex Litigation
  • Federal Appellate Practice
  • Federal Trial Practice
  • Multidistrict Litigation
  • State Appellate Practice
  • State Trial Practice
  • Condemnation
  • Securities Fraud & Insider Trading

Litigation Percentage:

  • 100% of Practice Devoted to Litigation

Bar Admissions:

  • Utah, 1982
  • U.S. District Court District of Utah
  • U.S. District Court Southern District of New York
  • U.S. Court of Appeals 2nd Circuit
  • U.S. Court of Appeals 10th Circuit
  • U.S. Court of Appeals 9th Circuit


University of Utah College of Law, Salt Lake City, Utah

  • J.D.
  • Honors: Order of Coif
  • Law Review: University of Utah Law Review, Editor-in-Chief, 1980 – 1982

University of Utah, Salt Lake City, Utah

  • B.A. cum laude
  • Major: English

Representative Cases:

  • USA Power, LLC, et al. v. PacifiCorp, et al., 2010 UT 31 (Utah 2010)
  • Dummar v. Lumis, 543 F.3d 614 (10th Cir. 2008)
  • Natural Organics, Inc. v. Nutraceutical Corp., 271 Fed. Appx. 89 (2d Cir. 2008)
  • McCowin v. Salt Lake City Corp., 176 P.3d 492 (Utah Ct. App. 2008)
  • Committee on the Conduct of Attorneys v. Oliver, 510 F.3d 1219 (10th Cir. 2007)
  • Kilpatrick v. Wiley, Rein & Fielding, 37 P.3d 1130 (Utah 2001)
  • American Cyanamid Co. v. Nutraceutical Corp., 54 F. Supp. 2d 379 (D.N.J. 1999)
  • USA Power, LLC v. PacifiCorp, 372 P.3d 629 (2016)

Representative Clients:

  • Dietary Supplement Industry


  • Trial Advocacy, University of Utah Law School, 2001 – 2008

Honors and Awards:

  • 2015 Christine Durham Utah Woman Lawyer of the Year
  • 2015 YWCA Outstanding Achievement Award Winner – Law
  • America’s Top 100 Attorney’s Lifetime Achievement – Utah
  • 2016 Dr. Kisten Ries Community Service Award

Professional Associations and Memberships:

  • Salt Lake Chamber of Commerce, Member, 2008 – Present

Past Employment Positions:

  • Berman, Tomsic & Savage, Managing Partner, 1983 – 2005
  • Tomsic & Peck, Founding Member, 2005 – 2009

Pro Bono Activities:

  • United States District Court for the District of Utah Disciplinary Committee, 1997 – 2007

Contact This Firm

Magleby Cataxinos & Greenwood

1500 East Arlington Drive
Salt Lake City, UT 84103
United States

Law Firm Contact: Matthew B. McCune

Tel: 801.359.9000

Fax: 801.359.9011



Member Since: 1999

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