Education
J.D., Loyola Law School
M.S.W., University of California, Los Angeles
B.A., University of California, Los Angeles
Bar Admissions
California
Court Admissions
U.S. Supreme Court
U.S. Court of Appeals for the Ninth Circuit
U.S. District Court, Central District of California
U.S. District Court, Northern District of California
U.S. District Court, Eastern District of California
Industries
Memberships
Asian Pacific American Women Lawyers Alliance (APAWLA)
California Minority Counsel Program, Board Member
Association of Business Trial Lawyers (ABTL)
Thai American Bar Association
Pragmatic and business-minded, Marissa is an advocate for her clients, excelling at both written and oral advocacy in contentious commercial matters. She is highly valued for her ability to put a strategy in play that considers all options for a successful outcome, including pre-dispute resolution, negotiated settlement, arbitration, or taking a case all the way to trial.
In addition to serving as Operating Partner for the Los Angeles office and a member of the firm's Management Committee, Marissa prides herself on balancing her legal practice with a commitment to giving back to the community through her involvement in the firm's Community Outreach, Diversity, and Pro Bono committees. Through these efforts, Marissa works with other employees in the firm to help raise funds and awareness for a variety of non-profits and community programs throughout Los Angeles, and recruits, mentors, and actively pursues professional and business development opportunities for younger attorneys of diverse backgrounds. Marissa also serves as a board member for the California Minority Counsel Program, whose mission is to promote diversity in the legal profession by providing lawyers of color with access and opportunity for business and professional development.
In real estate matters, Marissa represents landlords, tenants, and developers in a variety of matters, including breach of contract, tort actions, unlawful detainer actions, partnership disputes, and fair market rent disputes. She handles unfair competition and false advertising claims for multinational technology companies and complex consumer finance litigation for national lenders and loan servicers.
An experienced trial attorney in jury and bench trials in federal and California state courts, she also argues before the California Court of Appeal, tries cases in arbitration, and adeptly navigates the nuances of practical deal making in settlements.
Where settlement can achieve a client’s business goal, whether that means negotiating contract terms the client wants, getting an amendment to an agreement, or reaching a financial number, Marissa understands the importance of timing in presenting their position and terms. She stays focused on her client’s objectives and provides an experienced, steady hand in all manner of sophisticated negotiations.
In litigation, Marissa is deeply invested in the outcomes for her clients and their businesses. She places a high value on creating efficiencies and thinking outside of the box when preparing their arguments. She becomes fully knowledgeable about all the underlying facts, takes control of the process, ensures that appropriate resources and right-sized staffing are in place, and keeps her clients informed at all times.
In both negotiations and trials, her attention to detail and clarity of thought and purpose have netted positive results over the years and earned her many loyal client relationships.
Marissa temporarily served in-house at a national financial company which provides her both the perspective on the structure and skillsets in-house counsel need to operate within, but also the organizational inner-workings of running a large financial institution.
Prior to joining the firm, Marissa served as a judicial extern for the Honorable A. Howard Matz of the U.S. District Court, Central District of California, and interned at the White House, Office of Media Affairs, and at the Los Angeles Regional Office of United States Senator Barbara Boxer. Before becoming a lawyer, Marissa was a social worker serving abused and neglected children and the homeless population in South Los Angeles.
In real estate matters, Marissa represents landlords, tenants, and developers in a variety of matters, including breach of contract, tort actions, unlawful detainer actions, partnership disputes, and fair market rent disputes. She handles unfair competition and false advertising claims for multinational technology companies and complex consumer finance litigation for national lenders and loan servicers.
An experienced trial attorney in jury and bench trials in federal and California state courts, she also argues before the California Court of Appeal, tries cases in arbitration, and adeptly navigates the nuances of practical deal making in settlements.
Where settlement can achieve a client’s business goal, whether that means negotiating contract terms the client wants, getting an amendment to an agreement, or reaching a financial number, Marissa understands the importance of timing in presenting their position and terms. She stays focused on her client’s objectives and provides an experienced, steady hand in all manner of sophisticated negotiations.
In litigation, Marissa is deeply invested in the outcomes for her clients and their businesses. She places a high value on creating efficiencies and thinking outside of the box when preparing their arguments. She becomes fully knowledgeable about all the underlying facts, takes control of the process, ensures that appropriate resources and right-sized staffing are in place, and keeps her clients informed at all times.
In both negotiations and trials, her attention to detail and clarity of thought and purpose have netted positive results over the years and earned her many loyal client relationships.
Marissa temporarily served in-house at a national financial company which provides her both the perspective on the structure and skillsets in-house counsel need to operate within, but also the organizational inner-workings of running a large financial institution.
Prior to joining the firm, Marissa served as a judicial extern for the Honorable A. Howard Matz of the U.S. District Court, Central District of California, and interned at the White House, Office of Media Affairs, and at the Los Angeles Regional Office of United States Senator Barbara Boxer. Before becoming a lawyer, Marissa was a social worker serving abused and neglected children and the homeless population in South Los Angeles.
From the Desk of the GC: In Conversation with Corporate Leaders About the Future
JW Marriott Los Angeles L.A. LIVE
West Olympic Boulevard 900
Los Angeles, CA
10.13.22
Women in Legal & Corporate Leadership Virtual Summit
Los Angeles, CA
11.12.20
Benchmark Women’s Leadership Forum
Los Angeles, California
9.28.17
California Minority Counsel Program- 27th Annual Business Conference
San Francisco, California
10.20.16
Allen Matkins Receives Top Rankings from Benchmark Litigation US 2025
Seven Lawyers Receive Individual Rankings
Press Release
10.09.24
Allen Matkins Wins Prestigious Law Firm Diversity Award from The California Minority Counsel Program
Announcement and Press Release
8.29.24
Press Release
10.06.22
Press Release
10.22.21
Los Angeles Business Journal's Most Influential Women Attorneys
Marissa M. Dennis in the Los Angeles Business Journal
Press Mention
4.26.21
Most Influential Minority Attorneys: Marissa Dennis
Marissa M. Dennis in the Los Angeles Business Journal
Press Mention
1.25.21
Press Release
10.20.20
Landlord Primer Regarding Practical Recommendations for Reopening Office Buildings
5.22.20
California Judicial Council Adopts Emergency Rules Affecting Unlawful Detainer Actions and More
4.08.20
Allen Matkins Trial Team Featured in the Daily Journal's "Top Verdicts"
Scott J. Leipzig, Marissa M. Dennis, and Tim C. Hsu in the Daily Journal
Press Mention
2.19.20
Allen Matkins Team Defeats $200M Defective Product Suit
Marissa M. Dennis in the Daily Journal
Press Mention
10.31.19
Printer Co. Not Liable For Restaurant Tablet Issues, Jury Says
Marissa M. Dennis, Tim C. Hsu, and Scott J. Leipzig, in Law360
Press Mention
10.30.19
Los Angeles Business Journal’s Top Litigators and Trial Lawyers in Los Angeles
Marissa M. Dennis in the Los Angeles Business Journal
Press Mention
8.19.19
Marissa Dennis New Operating Partner at Allen Matkins in L.A.
Marissa M. Dennis, Michael J. Holmes, and Matthew J. Marino in GlobeSt.
Press Mention
7.25.19
Recent promotions represent a new generation of leadership at the premier West Coast law firm
Press Release
7.23.19
Most Influential Minority Attorneys: Marissa Dennis
Marissa M. Dennis in Los Angeles Business Journal
Press Mention
1.28.19
Past and Present Bar Leaders in Honor of Asian American and Pacific Islander Heritage Month
Marissa M. Dennis in the Los Angeles County Bar Association’s Daily eBrief
Press Mention
5.22.18
Most Influential Women Attorneys
Marissa M. Dennis and Crystal Lofing in the Los Angeles Business Journal
Press Mention
4.16.18
Most Influential Minority Attorneys in Los Angeles
Marissa M. Dennis in the Los Angeles Business Journal
Press Mention
1.22.18
Uber Beats Most Claims In Cab Co.’s Competition Suit
Marshall C. Wallace and Marissa M. Dennis in Law360
Press Mention
10.19.17
Unfair Competition in FinTech: A Familiar Problem for an Emerging Industry
Originally published in FinTech Weekly
9.21.17
3.27.17
Fifty Allen Matkins Attorneys Named 2016 Super Lawyers and Rising Stars
Press Release
7.08.16
Allen Matkins Pro Bono: Adoption Day 2015
1.11.16
56 Allen Matkins Attorneys Named Among 2015 Super Lawyers and Rising Stars
Nine Allen Matkins attorneys received special honors in their respective regions.
Press Release
6.26.15
55 Allen Matkins Attorneys Named Among Super Lawyers and Rising Stars 2014
Press Release
7.03.14
New Partners Based in Firm’s Century City and Los Angeles Offices
Press Release
4.22.14
Allen Matkins Promotes Six Associates to Senior Counsel
Press Release
8.28.13
News & Insights
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