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David J. Noonan

Attorney Profile

Top Rated Business Litigation Attorney in San Diego, CA

Noonan Lance Boyer & Banach, LLP
701 Island Avenue, Suite 400
San Diego, CA 92101-8700
Phone: 619-780-0880
Fax: 619-780-0877
Selected to Super Lawyers: 2007 - 2022
Licensed in California Since: 1973
Practice Areas: Business Litigation, Securities Litigation, Antitrust Litigation, Professional Liability: Defense, Appellate
Attorney Profile

A founding partner at Noonan Lance Boyer & Banach, LLP, located in San Diego, California, David J. Noonan devotes his practice to general business, banking and securities litigation as well as professional malpractice and antitrust liability. Mr. Noonan represents individuals and families, small businesses and major corporations from the greater San Diego area. As such, his cases have been quite diverse, ranging from defending Fortune 500 companies against charges of violating antitrust laws to representing professional athletes in a variety of matters.

After earning his Bachelor of Arts from Colby College in 1969, Mr. Noonan received his Juris Doctor cum laude from Syracuse University College of Law in 1972. Admitted to practice in California, he is active in a number of professional organizations, including the San Diego Chapter of the American Board of Trial Advocates, the San Diego County Bar Foundation and the San Diego Volunteer Lawyer Program. Mr. Noonan is a former president of the San Diego County Bar Association, a member of the American College of Trial Lawyers and a member of the Louis M. Welsh American Inn of Court.

As the lead counsel on a number of high-profile cases, Mr. Noonan has been successful for both plaintiffs and defendants. He led the team of attorneys that won a victory for California consumers who filed a class-action suit against an ephedra dietary supplement manufacturer for false and misleading advertising, and he was the lead counsel for the defense in a class-action suit charging antitrust violations related to the retail sale of gasoline. Highly regarded by his peers, Mr. Noonan has been listed in The Best Lawyers in America* for more than 20 consecutive years and is the recipient of the AV Preeminent** rating from Martindale-Hubbell.

*The Best Lawyers in America® 2010. Copyright 2009 by Woodward/White, Inc., Aiken, SC

**AV Preeminent and BV Distinguished are certification marks of Reed Elsevier Properties Inc., used in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell is the facilitator of a peer review rating process. Ratings reflect the confidential opinions of members of the bar and the judiciary. Martindale-Hubbell ratings fall into two categories: legal ability and general ethical standards.


Certificates and Credentials

About David J. Noonan

First Admitted: 1973, California

Professional Webpage:

Pro bono/Community Service

  • San Diego County Bar Association, Service to the Profession Award

Bar/Professional Activity

  • San Diego County Bar Association, Past President and Board Member
  • San Diego County Bar Foundation, Past President and Board Member
  • Lawyer Delegate to the Ninth Circuit Judicial Conference
  • State Bar of California
  • American College of Trial Lawyers
  • San Diego Chapter of ABOTA, Past President and Board Member
  • Admiited State Bar of California: Ninth Circuit Court of Appeals; United States District Courts for Southern, Central and Northern Districts of California; Fifth Circuit Court of Appeals; United States Supreme Court
  • American Bar Association
  • American Board of Trial Advocates
  • San Diego Volunteer Lawyer Program, Past President and Board Member
  • American Bar Foundation, Life Fellow


  • Syracuse University College of Law, Cum Laude
  • America's Top 100 Lawyers, Southern California, Lifetime Achievment
  • Listed in the Best Lawyers in America for Business Litigation for the past twenty years; also listed for Bet-The-Company Litigation and Legal Malpractice Law-Defense; San Diego Lawyer of the Year 2017 Legal Malpractice Law-Defense; San Diego Lawyer of the Year: Bet-The-Company Litigation 2009, 2011; Southern California Lawyer of the Year: Bet-The-Company Litigation 2011 
  • Recipient of the Daniel T. Broderick Award, 2005
  • America's Top 100 High Stakes Litigators, Southern California, 2017
  • Master with the American Inns of Court, Louis Welsh Chapter
  • AV® Peer Review rating from the Martindale Hubbell 
  • Syracuse University, Cum Laude

Scholarly Lectures/Writings

  • Lecturer, Trial practice

Educational Background

  • Colby College, B.A., 1969

Articles about David J. Noonan appearing in Super Lawyers

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Office Location for David J. Noonan

701 Island Avenue
Suite 400
San Diego, CA 92101-8700

Last Updated: 5/15/2022

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