Photo of Mercedes A. Cook

Mercedes A. Cook

Los Angeles
T: 213.617.4190
F: 213.443.2891



  • J.D., University of California, Los Angeles, 2012; Co-Chair, UCLA Black Law Students Association, 2010-2011; First Place Attorney, UCLA-Akin Gump Trial Advocacy Competition, 2009; Best Attorney, Western Regional Black Law Students Association-Trial Advocacy, 2010-2011
  • B.A., University of Southern California, 2009, cum laude
  • California
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. District Court for the Central District of California
  • U.S. District Court for the Northern District of California
Thought Leadership

Mercedes Cook is an associate in the Business Trials Practice Group in the firm's Los Angeles office.

Areas of Practice

Ms. Cook represents clients in a variety of business litigation matters, including disputes involving fraud, unfair competition, false advertising, breach of fiduciary duty, breach of contract and construction and Telephone Consumer Protection Act (TCPA) claims. An experienced trial attorney, Ms. Cook successfully second-chaired a conservatorship jury trial on behalf of the Public Conservator for the County of San Diego.

Ms. Cook also advises clients on both the regulatory and litigation aspects of environmental law. She is experienced with RCRA permitting requirements and federal and state water and air quality laws, including the Clean Water Act. Ms. Cook’s work includes preparing strategies to defend against alleged violations of the Clean Water Act and preparing for administrative hearings involving the Department of Toxic Substances Control. She also defended a battery manufacturer against a petition for an order for abatement before the South Coast Air Quality Management District and was part of a team of Sheppard Mullin attorneys that successfully obtained a TRO preventing the immediate shutdown of the client’s battery recycling facility. Ms. Cook’s litigation experience includes first-chairing a variance hearing before the South Coast Air Quality Management District.

Ms. Cook is an active member of Sheppard Mullin’s Diversity and Inclusion Attorney Network (DIAN), serving as the Firm’s coordinator for the USC Street Law Program, which works with USC law students and high school students to promote a diversity pipeline into the legal field. She also is a member of the Firm’s Women Lawyers Group.

Ms. Cook also is a committed pro bono attorney and serves as the coordinator for the Firm’s Public Counsel Adoptions Project. In 2015, she was honored with the firm’s Bob Gerber Pro Bono Attorney of the Year Award in recognition of her commitment to volunteering legal services to those in need.

Ms. Cook also served as a co-instructor for Sheppard Mullin’s 2013 Summer Trial Advocacy Program.


  • Fair Shake Rock Star, Western Center on Law and Poverty, 2016
  • Bob Gerber Pro Bono Attorney of the Year Award, 2015


  • Board of Governors, Philippine American Bar Association
  • Member, Association of Business Trial Lawyers
  • Member, Los Angeles County Bar Association