Jeffrey M. Oberto is a Senior Associate with Keystone Law Group, P.C. Jeffrey’s practice is focused primarily on trust, estate, and conservatorship litigation and administration matters. Prior to joining Keystone, Jeffrey practiced at a probate litigation firm where he represented trustees, beneficiaries, executors, heirs, and conservators in all aspects of litigation. Jeffrey has extensive experience litigating matters involving elder abuse, fraud, incompetency, and undue influence. Jeffrey is passionate about representing individuals from all walks of life during every aspect of the litigation process and doing everything in his power to help each client achieve the best possible outcome.

Jeffrey also has appellate experience and has appeared before courts in Los Angeles County, Orange County, Riverside County, San Bernardino County, Ventura County, Santa Barbara County, and Sacramento County.

In 2023, Jeffrey was selected as a Rising Star by Super Lawyers Magazine.

Jeffrey M. Oberto
Senior Associate

Jeffrey received his undergraduate degree in Cognitive Psychology from the University of California, Irvine, graduating magna cum laude, and his law degree from the Pepperdine University School of Law.


  • Los Angeles County Bar Association, Trusts & Estates and Litigation Sections
  • California Lawyers Association, Trusts & Estates and Litigation Sections
  • ProVisors
Representative Matters
  • Successfully settled numerous probate litigation matters to achieve favorable results for trustees, executors, heirs and beneficiaries.
  • Represented heirs and beneficiaries in cases involving claims of financial and physical elder abuse, undue influence, and lack of testamentary capacity.
  • Represented loved ones in initiating conservatorship proceedings in order to allow the conservator to make important legal, medical, and financial decisions for the incapacitated individual.
  • Settled a contested trust amendment matter for the terms of the original trust after uncovering detailed evidence of undue influence and elder abuse by the opposing party and attorney who drafted the amendment.
  • Achieved a favorable settlement at mediation after uncovering impeachment evidence on opposing party based on extensive background research.


Jeffrey spends his free time surfing, trail running, rooting for the Los Angeles Dodgers, and visiting patients at Children’s Hospital Los Angeles with his certified therapy dog, Roscoe.