About
Marissa Alter-Nelson is a nationally recognized litigator and a partner at Latham & Watkins LLP, who represents corporate clients in complex business lawsuits and disputes and high-stakes proceedings. Her practice covers commercial litigation, securities matters, derivatives disputes, antitrust claims, contract conflicts, bankruptcy cases, class actions, arbitration, and regulatory investigations. She advises companies facing significant legal and financial risks and works to secure favorable results through trial advocacy, motion practice, negotiation, and settlement strategies. Her experience spans financial services, technology, real estate, and other industries across diverse forums and is efficient.
Marissa earned a B.A. from the University of California, Santa Barbara, with honors before completing a J.D. at New York University School of Law. This academic foundation supported a career focused on sophisticated litigation and dispute resolution. She developed skills in legal analysis, advocacy, research, and client counseling that continue to guide her work. Her education prepared her to address challenging legal issues involving corporations, financial institutions, and organizations operating in highly regulated and competitive environments with distinction throughout.
Marissa has represented banks, investment firms, technology companies, accounting organizations, and other businesses in major disputes. She has helped clients resolve claims involving fiduciary duties, business torts, mergers, acquisitions, cyber incidents, and securities matters. Her work includes defending companies in investigations by agencies such as the SEC, DOJ, and FTC. Through litigation, arbitration, and negotiated resolutions, she helps clients protect business interests, manage risk, and respond effectively to complex legal challenges and evolving regulatory concerns for clients nationwide.
Marissa Alter-Nelson has earned recognition from Chambers USA, which highlighted her commercial litigation capabilities, strategic thinking, and practical approach. Her achievements have also been recognized by organizations, including Crain’s New York Business and Business Insider. Beyond client matters, she maintains an active pro bono practice, representing individuals in post conviction proceedings and family law matters. She also contributes to the legal profession through leadership, community involvement, speaking engagements, and service supporting education, professional development, and public access and mentorship programs.
Law Office Affiliations
- Partner, Latham & Watkins LLP
- Member, New York State Bar Association
Licensed State
- New York
Education
- New York University School of Law
Juris Doctor (JD) - University of California
Bachelor of Arts (BA)
Awards & Badges

- Antitrust & Trade Law
- Contracts & Agreements
- Mergers & Acquisitions
- Class Action
- Litigation
- Commercial Real Estate




