Photo of David S. Cannon

David S. Cannon

San Francisco
F: +1.415.403.6208


  • J.D., University of California, Hastings, 2000, magna cum laude
  • M.A., University of Virginia, 1993
  • B.A., University of California, Berkeley, 1989
  • California
Thought Leadership


David Cannon is a partner in the firm's San Francisco office and practices in the firm’s Business Trials and Government Contracts, Investigations & International Trade Practice Groups.

Areas of Practice

Mr. Cannon handles high-stakes commercial litigation, including contract, banking, insurance, product liability and intellectual property disputes.  In banking-related matters, he has handled securities fraud claims, as well as mortgage and lender disputes stemming from the financial crisis.  His intellectual property experience has included trade secret and trademark matters as well as licensing issues and contract disputes.  With commercial disputes, he has helped technology companies, manufacturers, investors, insurers, municipalities and project sponsors successfully defeat tort, unfair competition, false advertising, product defect, construction defect, insurance coverage and environmental contamination claims.  He has significant experience with large scale mass tort and class action claims.

His clients have included Wells Fargo, JP Morgan Chase, Hewlett-Packard, Mitsui, Qualcomm, Roche Molecular Systems, and Louisiana-Pacific.

Prior to private practice, Mr. Cannon served as a judicial extern for Chief Judge Marilyn Hall Patel of the Northern District of California. He has also served as an assistant district attorney in the Misdemeanor Trial Unit for the City and County of San Francisco, where he first-chaired seven trials, winning every one.  Mr. Cannon has served on the Board of the San Francisco Heritage and currently serves on the Board of The SMART Program, a San Francisco-based, non-profit organization dedicated to ensuring that middle school students have access to high quality education regardless of income.


  • Government Contracts, Legal 500, 2015



  • Noble v. Greenberg Traurig, et al. - Defending Wells Fargo Capital Finance, LLC against putative class action claims of aiding and abetting securities fraud related to $700 million mortgage fund

  • Adams Canyon Ranch v. Wells Fargo Capital Finance - Defended Wells Fargo against tortious interference with contract claims relating to a third-party loan refinance. Claims were voluntarily dismissed

  • JPMorgan Chase Bank, N.A. - Represented JPMorgan Chase in various state and federal courts in mortgage-related consumer class actions

Intellectual Property

  • MMCA v. Hewlett Packard - Trade secret claims relating to anti-counterfeiting investigations
  • Western Wind Energy v. Savitr Capital - Defeated request for preliminary injunction on trademark infringement claims
  • Broadcom v. QUALCOMM - Antitrust, patent, contract and misrepresentation claims related to standard setting organizations
  • Applera v. Roche Molecular Systems - Licensing rights related to polymerase chain reaction technology


  • Kahan v. City of Oakland – Represent City of Oakland in purported class action alleging improper lien placements.
  • Continental Development Corp. v. Webcor Builders, Inc. – Represent hotel owner in construction defect case related to defective polyisobutylene sealant on insulated glass units.
  • Overture Networks v. Micron Technology, Inc. – Contract and breach of warranty claims related to defective chips provided for Ethernet networking products.
  • In re Oil Spill by Deepwater Horizon - Defense of claims against minority investor in BP’s Macondo oil well project
  • Safeco Insurance Corporation - Negotiated significant coverage settlements related to clergy abuse claims
  • Davis v. Louisiana-Pacific - Defense jury verdicts on all claims in $100 million class action product defect action
  • Madison Marquette v. DPR - Obtained multimillion-dollar settlement on construction defect (water intrusion) claims
  • Saunders v. General Motors - Favorable settlement on unfair competition and false advertising class action claims


  • Board Member, San Francisco Heritage Foundation
  • Board Member, The SMART Program