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We are laser-focused on guiding our trustee, executor, beneficiary, heir, conservator and guardian clients through some of the most complex and emotionally charged issues life can throw them. Our commitment to helping our clients achieve results that not only add to their bottom line but to their peace of mind is at the core of everything we do. That’s RMO.

Recognized Among the Best Trust & Probate Attorneys in California & Texas.

Our lawyers are recognized among the best and brightest probate dispute attorneys in the country, our efforts in the courtroom bested only by the quality of our people and the work we do serving our communities.

Our Team 

Our efforts in the courtroom are bested only by the quality of our people and the outstanding work we do in our communities. Our attorneys and staff work tirelessly to add to our legal community in which we serve. Through various California and Texas trusts and estates-related organizations, our attorneys aim to bring awareness of case and court processes in trust, estate, conservatorship, and guardianship disputes in the communities we serve. These include:

  • Beverly Hills Bar Association
  • Los Angeles County Bar Association 
  • Pasadena Bar Association
  • South Bay Bar Association
  • Ventura County Bar Association
  • San Diego Bar Association
  • San Gabriel Valley Fiduciary Council
  • Beverly Hills Estate Planning Council
  • Orange County Estate Planning Council
  • Bar Association of San Francisco
  • Professional Fiduciary Association of California
  • Collin County Bar Association
  • Dallas Bar Association
  • Dallas Estate Planning Council

Our attorneys regularly speak to national and global organizations, covering key issues in the probate, trust and estates, conservatorship/guardianship, and elder financial exploitation areas. These organizations include:

  • Society of Trust and Estate Practitioners
  • WealthCounsel
  • Private Client Global Elite
  • Strafford Publications

Our support staff, which includes paralegals, legal assistants, a client relations team, and firm administrators, works tirelessly to assist our attorneys and clients with the various aspects of their cases.

Our History 

RMO LLP was founded in 2015 by Scott E. Rahn, a dedicated probate litigator who is passionate about helping people navigate the complexities of trust and estate disputes. Scott’s journey to establishing RMO LLP began in a rural community in northeast Wisconsin, where he learned the values of hard work and service from his family. Growing up on his grandparents’ dairy farm and watching his father, a mechanic who often fixed cars for those who couldn’t immediately pay, instilled in Scott a deep commitment to assisting others in need.

After honing his skills at a multinational law firm’s trust and estates department in Los Angeles, Scott decided to create a firm that would focus exclusively on probate litigation. He envisioned a practice that could offer unparalleled knowledge and a personalized approach to each case. This vision materialized with the launch of RMO LLP, a firm dedicated to providing compassionate and effective legal representation during some of the most challenging times in its clients’ lives.

Sean Muntz, Managing Partner & Scott Rahn, Founding Partner

In 2016, Scott was joined by his longtime friend and fellow litigator, Sean D. Muntz, and the firm was rebranded as RMO. Sean’s decision to join RMO LLP was driven by his strong personal and professional bond with Scott, with whom he shared an office as a summer associate, and the unique opportunity to make a significant impact in the field of probate litigation. Together, Scott and Sean have built a firm known for its integrity and dedication to its clients.

RMO’s success has powered the firm’s growth from a single office in Los Angeles to six offices throughout California, in Los Angeles, Pasadena, Orange County, San Diego, Bay Area, and Fresno, and two offices in Texas, in Dallas and Houston.

Our Locations

At RMO Lawyers, our extensive network of offices across California—including Los Angeles, Pasadena, Orange County, San Diego, the Bay Area, and Fresno—and in Texas, with locations in Dallas and Houston, uniquely positions us to best serve our clients’ needs. This widespread presence allows us to offer localized counsel and personalized service while leveraging the collective knowledge and resources of our entire firm. Whether you are dealing with legal matters in California or Texas, our team is readily accessible and equipped to handle your case with the utmost proficiency and care. Our regional coverage ensures that we can respond promptly to your needs, providing you with the advantage of deep local insights and a broad range of legal knowledge. Trust RMO Lawyers to deliver exceptional service and results, wherever you are.

Community Involvement

At RMO, we put our values into action. Actively leading and supporting organizations in our communities. We proudly support charities whose focus affects the trust and estate community, and beyond. Some of the organizations we support include:
  • Alzheimer’s Association
  • Orangewood Foundation
  • Samueli Academy
  • Arts Bridging The Gap

RMO Lawyers also routinely provides thought leadership to the community by volunteering our attorneys time through various California trusts and estates-related organizations including the Beverly Hills Bar Association, South Bay Bar Association, Ventura County Bar Association, San Diego Bar Association Trusts and Estates Section, Riverside County Bar Association, San Gabriel Valley Fiduciary Council, Beverly Hills Estate Planning Council, Orange County Estate Planning Council, etc, as well as national and global organizations, covering key issues in the probate, trust and estates, conservatorship/guardianship and elder financial exploitation areas. 

RMO has committed significant time and resources to publishing articles, blogs, videos, and other media that touch on relevant industry-related happenings, legislative updates, case updates, and other significant topics in the field. Always, the goal is to educate communities likely facing these difficult issues for the first, and all-too-often only, time.

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RMO Lawyer Community Arts Bridging the Gap

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What We Do

Trust Litigation

Trust litigation can arise for various reasons, such as disputes over the interpretation of the trust document, disagreements among beneficiaries, allegations of trustee misconduct or breach of fiduciary duty, challenges to the validity of the trust, or claims of undue influence. We can help you navigate trust disputes and secure your inheritance.

Financial Elder Abuse

Oftentimes, elderly individuals can fall victim to manipulation and scams. Bad actors, be they caregivers, acquaintances, or family, possess the capacity to gradually assume authority over an elderly person’s essential requirements and finances. Through deceit, they can coerce seniors into relinquishing their assets and wealth. We can help restore these individuals’ finances or their intended final wishes.

Probate Estate Litigation

When an individual dies with or without a will, you will likely go through the probate process. Probate can be overwhelming, especially while coping with the loss of a loved one. If you are involved in a probate dispute or you have concerns about a recently deceased loved one’s will or estate, let us help protect and claim your inheritance.

Conservatorship & Guardianship

Whether you are looking to protect a loved one through a conservatorship or guardianship or disputing a conservatorship or guardianship being pursued for a loved one, we are here to help.

Who We Represent

Administrators & Executors 

Wills nominate executors to administer an estate, but only when approved by the probate court. Where there is no will, the court will appoint an administrator to manage the estate.


Trusts identify who will serve as trustees, often the surviving spouse, children, other family member, friend, or a bank. Unlike an executor or administrator, a trustee normally will not require court approval to administer a trust.


Beneficiaries are entitled to some benefit under a will or a trust, or under a beneficiary designation (e.g. insurance or IRA) because they are identified in a document as an intended recipient of a benefit.


Heirs are the natural descendants of a decedent, following each state’s intestate laws and lines of consanguinity (i.e. who’s your kin). Heirs have natural legal rights, even if not named as beneficiaries.


Conservators/Guardians are court-appointed fiduciaries, often family members, friends, or professional fiduciaries, who serve to manage a person’s health and/or finances.


Creditors are those to whom a decedent owed money at the time of death. Creditors must act swiftly after a debtor dies to assert claims or their claims will be time-barred and lost.

Surviving Spouses

Spouses often have special inheritance rights and benefits regarding trusts and probate, which can make them the target of disputes. 


Be advised that the RMO Client Relations Team will reach out prior to your scheduled time, as our policy requires that we gather additional information concerning the parties to your case before we can confirm your consultation. In the event that we are unable to reach you, regrettably, we will need to cancel your requested consultation.

Communication Disclaimer

Please note that communications by you to RMO LLP or any of its lawyers through this website do not create an attorney-client relationship between you and the firm. Do not send any privileged or confidential information to the firm through this website or otherwise until instructed in writing from us to do so.