William A. Markham

Attorney Profile

Top Rated Antitrust Litigation Attorney in San Diego, CA

Law Offices of William Markham, P.C.
 | 402 West Broadway, Suite 400, San Diego, CA 92101
Phone: 619-221-4400
Fax: 619-224-3974
Selected To Super Lawyers: 2013 - 2019
Licensed Since: 1988
Education: Harvard Law School
Practice Areas:
  • Antitrust Litigation (70%),
  • Business Litigation (20%),
  • Real Estate: Business (10%)
Languages Spoken:
  • English,
  • Spanish,
  • French
Attorney Profile

At the Law Offices of William A. Markham, P.C., William A. Markham is a leading antitrust lawyer who represents clients in San Diego, California. Along with antitrust litigation, he also handles business litigation and real estate law. Fluent in English, French and Spanish, andwith over 30 years of experience, he offers his high-quality legal services to those facing issues of complex litigation.

Mr. Markham is admitted to practice in Washington, D.C., California and a variety of federal courts. A member of the State Bar of California, the San Diego County Bar Association and the District of Columbia Bar, he has an Avvo “Superb” rating and has been a finalist for the title of best intellectual property litigator, best business litigator and best real estate litigator by The San Diego Daily Transcript.

A regular writer and presenter on trade matters, antitrust issues and general law topics, he has been quoted and interviewed by organizations such a s The New York Times, CNN, Bloomberg TV, ESPN, NBC San Diego, and Univision. A 1987 graduate from Harvard Law School, he was an associate editor and editor of the Harvard International Law Journal. Mr. Markham has global companies (including the world's largest manufacturer of LED products, a leading manufacturer of pulse oximetry products, and a global automobile manufacturer), other large companies (including a publicly held retail chain and the largest privately held manufacturer of precast concrete products in North America), as well as numerous other companies and individuals. The difference in the quality of Mr. Markham’s representation comes from his extensive trial experience. He has won bench and jury verdicts in various kinds of commercial disputes, and he has litigated numerous antitrust cases as well as cases of product-counterfeiting, trademark infringement and false advertising. In particular, he is well-versed in sections one and two of the Sherman Act, sections three and seven of the Clayton Act, California’s Cartwright Act, the Robinson-Patman Act, and California’s Unfair Practices Act.

Practice Areas
Lawyer Practice Area Pie Chart

Antitrust Litigation (70%): Antitrust & Trade Litigation

Business Litigation (20%): Trade Secret, Non-Compete Agreements

Real Estate (10%): Landlord/Tenant

Focus Areas

Antitrust & Trade Litigation, Trade Secret, Non-Compete Agreements, Landlord/Tenant


Selected to Super Lawyers for 7 yearsbottom-image

Super Lawyers: 2013 - 2019

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About William Markham

Admitted: 1988, California

Professional Webpage: https://www.markhamlawfirm.com/attorneys/william-markham/


  • Best Real Estate Litigator, 2010
  • Highest Possible Rating of 10.0, Avvo
  • Best Intellectual Property Litigator, 2015
  • “Super Lawyer” for antitrust law, SuperLawyers.com and Super Lawyers Magazine, since 2013
  • Best Real Estate Attorneys, San Diego Metro Magazine, 2011 and 2012
  • Semi-Finalist for “best business litigator”, The San Diego Daily Transcript, 2006, 2007, 2011 and 2012

Bar/Professional Activity:

  • Washington
  • District of Columbia Bar Association
  • California
  • District of Columbia
  • San Diego County Bar Association

Pro bono/Community Service:

  • French-American Chamber of Commerce (San Diego County)


  • Innovation Ventures LLC v. Pittsburgh Wholesale Grocers, Inc., N.D. Cal., 2012
  • Curtin Maritime Corp. v. Santa Catalina Island Co., 9th Cir., 2018
  • Jensen Enterprises, Inc. v. Oldcastle Precast, Inc., N.D. Cal., 2006
  • Thompson v. 1-800 Contacts, Inc. (D. Utah, 2016)
  • Orchard Supply Hardware LLC v. Home Depot USA, Inc., N.D. Cal., 2012
  • Stillings v. 1-800 Contacts, Inc., N.D. Cal., 2016
  • Aya Healthcare Services, Inc. v. AMN Healthcare, Inc., S.D. Cal., 2017
  • SMRT LLC v. Resmed Corp., Cal. Sup. Ct., S.D. Cty., 2011

Representative Clients:

  • Obtained summary judgment in vigorously contested litigation against global bank in complex case in which the bank tried to establish a large lien against a valuable property in San Diego, doing so by establishing that the bank's confusingly stated claims, once properly clarified, were time-barred as a matter of law because of evidence obtained during the case. JPMorgan Chase Bank, N.A. v. Cho et al. (Cal. Sup. Ct., SD Cty., 37-2016-00045054-CU-OR-CTL)., 2018

Educational Background:

  • University of California, Santa Barbara, Honors: With Highest Honors, 1984

Industry Groups

  • French-American Chamber Of Commerce (San Diego Chapter)
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Office Location for William A. Markham

402 West Broadway, Suite 400
San Diego, CA 92101

Phone: 619-221-4400

Fax: 619-224-3974

William A. Markham:

Last Updated: 10/17/2019

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