Our Awards
Overview
Sean D. Muntz serves as Managing Partner of RMO LLP. Sean is an experienced trial and appellate lawyer, with litigation experience spanning a broad range of subject matters, including banking, general commercial, employment, probate, real estate, securities, intellectual property, maritime and environmental disputes. Sean has litigated matters in state and federal courts throughout California, and in alternative dispute resolution forums, including AAA and JAMS, and before the NASD/FINRA and Pacific Stock Exchange.
Sean’s practice focuses on representing beneficiaries, professional and corporate fiduciaries (administrators, executors, trustees, conservators, and guardians) in contested trust, estate and probate litigation.
Sean previously was a partner at an international law firm in the firm’s commercial litigation group, where he represented international financial institutions in litigation matters.
Sean worked as in-house counsel for a Fortune 100 aerospace manufacturer. There, he represented the company in internal and external investigation and compliance matters. While there, Sean represented the company as a victim of espionage, in the criminal matter of U.S. v. Chung, in which the U.S. District Court handed down the first conviction under the Economic Espionage Act of 1996. For representing the company’s interests, Sean received a commendation from the Los Angeles Field Office of the FBI and the FBI Director.
Sean also has worked for a Fortune 100 financial institution as in-house counsel, where he managed and directed national litigation strategy, overseeing hundreds of cases.
Education
University of Southern California
Juris Doctor
University of Hawaii
BA, Journalism & Political Science
Community & Professional Involvement
- Member, ProVisors
- Volunteer, Orangewood Foundation
- Former Member, Black Law Students Association at USC Gould School of Law
Bar Admissions
- Member, State Bar of California
Awards & Recognition
- Best Lawyers in America – Trusts and Estates, Best Lawyers, 2024-2025
- “Super Lawyer” Super Lawyers, Southern California Super Lawyers 2019-2025
- “Orange County Visionary”, Los Angeles Times, 2024
- “Leaders of Influence: Litigators and Trial Lawyers”, Los Angeles Business Journal, 2022
- “Legal Visionaries”, Business of Law Magazine, Los Angeles Times, 2022
Appellate Opinions
- McCabe v. Wells Fargo Bank, N.A., Cal. Court of Appeal, Fourth Dist., Div. 2
- Jenkins v. JPMorgan Chase Bank, N.A., Cal. Court of Appeal, Fourt Dist., Div. 2
- Pardes v. The Boeing Company, Cal. Court of Appeal, Fourth Dist., Div. 3
- Yun v. JPMorgan Chase Bank, N.A., Cal. Court of Appeal, Fourth Dist., Div. 3
- Gyurec v. Deutsche Bank Nat’l. Trust Co., Cal. Court of Appeal, Fourth Dist., Div. 2
- Welker v. JPMorgan Chase Bank, Cal. Court of Appeal, Fourth Dist., Div. 3
- Palms & Sands Owners Ass’n., Inc. v. Bank of America, Cal. Court of Appeal, Fourth Dist., Div. 1
- Trapp v. U.S. Bank National Ass’n., Cal. Court of Appeal, Fourth Dist., Div. 2
- Sroka v. Bank of America, N.A., Cal. Court of Appeal, Fourth Dist., Div. 3
- Graham v. Bank of America, N.A., Cal. Court of Appeal, Fourth Dist., Div. 1
- Palmer v. JPMorgan Chase Bank, N.A., Cal. Court of Appeal, Fourth Dist., Div. 1
- Sundby v. Bank of New York, Cal. Court of Appeal, Fourth Dist., Div. 1
- Gorton v. Advantix Lending, Inc., Cal. Court of Appeal, Fourth Dist., Div. 2
- Pedery-Edwards v. JPMorgan Chase Bank, N.A., Cal. Court of Appeal, Fourth Dist., Div. 1
- Moore v. ReconTrust Company N.A., Cal. Court of Appeal, Fourth Dist., Div. 1
- Steinke v. Bank of America, N.A., Cal. Court of Appeal, Fourth Dist., Div. 2
- Rosen v. Bank of America, N.A., Cal. Court of Appeal, Fourth Dist., Div. 3
- Jensen v. Huffman, Cal. Court of Appeal, Fourth Dist., Div. 3
- Peralta v. Bank of America Corp., Cal. Court of Appeal, Fourth Dist., Div. 2
- Le Beau v. Bank of America, Cal. Court of Appeal, Fourth Dist., Div. 3
- Mabry v. Superior Court, Cal. Court of Appeal, Fourth Dist., Div. 3
- Harris v. Bank of America, N.A., Cal. Court of Appeal, Fourth Dist., Div. 2
Featured News & Content
Featured in the News
Jury Awards RMO Client $3.65 Million Following Four-Day Trial
National probate litigation law firm RMO LLP announced today that it recently secured a $3.65 million jury verdict on behalf of a client who was taken advantage of by her host family who videotaped her while showering.
RMO LLP Wins Seven-Figure Judgment in Trust Contest
Probate litigation law firm RMO LLP announced today it has secured a $1.1 million trial award on behalf of its elderly client in a disputed trust contest matter.
Sean Muntz Elevated to Co-Managing Partner of RMO LLP
Probate and trust estate litigation law firm RMO LLP announced today that Partner and Practice Management Chair Sean D. Muntz has been promoted to Co-Managing Partner of the Firm…
RMO LLP’s Sean Muntz, Scott Rahn Named Top Los Angles Lawyers
published on PRNewswire
National probate and inheritance dispute law firm, RMO LLP, announced today that CEO Scott Rahn and firm Managing Partner Sean Muntz have been recognized…
RMO LLP Taps Sean Muntz as Firm Managing Partner
published on PRNewswire
National probate and inheritance dispute law firm, RMO LLP, announced today that veteran probate trial and appellate lawyer Sean D. Muntz has been named the firm’s new Managing Partner.
RMO LLP’S Scott Rahn and Sean Muntz Named “Legal Visionaries”
published by Reuters
National probate litigation law firm RMO LLP announced today that Founding Partners Scott Rahn and Sean Muntz have been recognized by the Los Angeles Times as ‘Legal Visionaries’ in its second annual Business of Law magazine.
Latest Articles from Sean
- News
- 1 min read
Sean Muntz Named “Orange County Visionary” by the Los Angeles Times
- Published on
Sean Muntz, Managing Partner of RMO LLP, has been named an “Orange County Visionary” by the Los Angeles Times. The annual publication recognizes individuals [...]
Sean Muntz, Managing Partner of RMO LLP, has been named an “Orange County Visionary” by the Los Angeles Times. The annual publication recognizes individuals […]
- Trust Litigation
- 5 min read
Can Trustees Be Held Personally Liable?
- Published on
Yes, trustees can be held personally liable for losses sustained by the trust if they are found to be in breach of their fiduciary [...]
Yes, trustees can be held personally liable for losses sustained by the trust if they are found to be in breach of their fiduciary […]
- Probate Litigation
- 4 min read
What Probate Disputes Do Appellate Courts Review?
- Published on
After someone passes away, the probate court is the venue where their estate is settled, and their will is verified and executed. During this [...]
After someone passes away, the probate court is the venue where their estate is settled, and their will is verified and executed. During this […]
- Probate Law
- 5 min read
What Happens If You Lose a Probate Court Appeal?
- Published on
The probate court is a court that handles the administration and distribution of assets to beneficiaries when someone dies, among other matters. If you [...]
The probate court is a court that handles the administration and distribution of assets to beneficiaries when someone dies, among other matters. If you […]
- Probate Law
- 5 min read
Can You Appeal a Probate Court Decision in California?
- Published on
Probate courts can decide all matters related to an estate, including who inherits what and how it will be divided under state law. However, [...]
Probate courts can decide all matters related to an estate, including who inherits what and how it will be divided under state law. However, […]
- Probate Law
- 6 min read
The Guide to OCSC Probate Notes and Supplements
- Published on
Orange County Superior Court probate notes are received after you’ve filed your Petition for Probate with the OCSC probate division. Probate notes are simply the probate court examiner asking for clarification [...]
Orange County Superior Court probate notes are received after you’ve filed your Petition for Probate with the OCSC probate division. Probate notes are simply the probate court examiner asking for clarification […]
Latest Articles from Sean
Insights and advice on trust and probate estate litigation from our blog.
Sean Muntz Named “Orange County Visionary” by the Los Angeles Times
Sean Muntz, Managing Partner of RMO LLP, has been named an “Orange County Visionary” by the Los Angeles Times. The annual
Can Trustees Be Held Personally Liable?
Yes, trustees can be held personally liable for losses sustained by the trust if they are found to be in
What Probate Disputes Do Appellate Courts Review?
After someone passes away, the probate court is the venue where their estate is settled, and their will is verified
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