Madeline Lei Momi Goossen

Madeline Lei Momi Goossen is a California litigation attorney whose practice covers intellectual property, commercial disputes, and white-collar defense. She handles trademark enforcement and brand protection matters for clients ranging from emerging businesses to established industry brands. Her work includes disputes in federal courts and before the Trademark Trial and Appeal Board. She also assists clients with business and contract disputes, real estate and land use matters, and sensitive investigations.

Madeline earned a Bachelor of Arts in History and Political Science from the University of Southern California, graduating magna cum laude and as a member of Phi Beta Kappa. She later earned her Juris Doctor from the USC Gould School of Law. During law school, she served as Editor-in-Chief of the Southern California Law Review and as a Legal Writing and Advocacy Fellow, mentoring students in persuasive writing and advocacy.

Madeline has experience managing discovery, preparing matters for trial, drafting motions, and developing litigation strategies. She also guides clients through government and internal investigations involving state and federal organizations. She previously served as a judicial extern to Judge Kim McLane Wardlaw of the U.S. Court of Appeals for the Ninth Circuit and Justice Martin J. Jenkins of the Supreme Court of California. These roles strengthened her understanding of appellate analysis, judicial reasoning, and persuasive written advocacy.

Madeline Lei Momi Goossen is admitted to practice in California and before the U.S. District Court for the Central District of California. She also serves as a Writing Specialist at Loyola Law School and guest lectures on legal writing and The Bluebook. Her background reflects a commitment to clear advocacy, careful preparation, and practical case management. She helps clients address complex disputes and investigations through focused legal analysis, strategic motion practice, and thoughtful communication.

Law Office Affiliations

• Associate, Jeffer Mangels & Mitchell LLP
• Member, State Bar of California

Licensed State

• California

Education

• University of Southern California, Gould School of Law
  Juris Doctor (JD)
• University of Southern California
  Bachelor of Arts (BA)