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 (40%),
  • Real Estate: Business (30%),
  • Business Litigation (30%)
Languages Spoken:
  • English,
  • French,
  • Spanish
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 with 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 as Univision, ESPN, CNN, Bloomberg TV and The New York Times. A 1987 graduate from Harvard Law School with a Juris Doctor, he was an associate editor and editor of the Harvard International Law Journal. Mr. Markham has represented universities, Fortune 100 and 500 companies, government agencies, sovereign governments, and other high-profile organizations 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 and handled 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 (40%): Antitrust & Trade Litigation

Real Estate (30%): Landlord/Tenant

Business Litigation (30%): Trade Secret, Non-Compete Agreements

Focus Areas

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


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

Bar/Professional Activity:

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

Pro bono/Community Service:

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


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

Educational Background:

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

Industry Groups

  • French-American Chamber Of Commerce (San Diego Chapter)
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: 10/29/2018

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