O’Melveny Worldwide

David Eberhart focuses his practice on the representation of technology companies, primarily in intellectual property litigation, concerning trademarks, copyrights, and trade secrets. David’s practice also encompasses business torts, contract disputes, and antitrust litigation for technology companies. He has significant experience in all phases of litigation through trial and appeal.

  • Currently lead counsel defending a major consumer electronics company against trade secrets claims alleging that plaintiff’s former Chief Technology Officer, now employed by the defendant, conspired with the defendant to steal plaintiff’s trade secrets, sabotage the company, and raid its core engineering team.
  • Defended electronic design automation software developer in defending technically-intense copyright infringement and breach of contract claims by another software developer; after a hearing on the client’s motion to dismiss the plaintiff agreed to settle and dismiss the case on confidential terms.
  • Stepped in two weeks before trial to act as trial counsel defending against breach of contract and tortious interference claims alleging that defendants undervalued an internet flash sale business to avoid triggering an earnout clause in a merger agreement; after a month-long trial, the jury returned a verdict fully in favor of the defense.
  • Served as lead counsel for a major consumer electronics company in asserting trademark infringement, dilution, and unfair competition claims against a large Internet-based retailer involving a mobile software download service.
  • Defended a major online auction service against claims that it knowingly abetted the sale of counterfeit products in a case that attempts to shift from brand owners to auction sites the responsibility to police trademark infringement. The case was resolved on terms favorable to the client.
  • Served as lead counsel to a major online auction service in asserting claims for fraud relating to a complex technical scheme used to fraudulently obtain advertising commissions; the civil case settled favorably for the client.
  • Served as trial counsel for a leading banking institution in defending claims involving alleged copyright infringement of online banking source code and technology; the case settled very favorably on the eve of trial.
  • Served as trial counsel defending corporate affiliates of a news and media conglomerate in the successful defense of copyright infringement and other claims relating to satellite television conditional access systems; following a five-week trial, the jury deliberated for less than a day and found in favor of the defendants.
  • Represented a leading provider of on-demand software and software-enabled services to the rental housing industry in a lawsuit brought by its primary competitor alleging misappropriation of trade secrets and copyright infringement and including counter-claims for antitrust violations, tortious interference with customer contracts, and trade secret misappropriation; after the client successfully defeated a motion to dismiss its counter-claims the parties entered into a comprehensive settlement of the litigation.
  • Defended a leading provider of on-demand dealership software for the auto industry and its former employee against claims by a Japanese auto manufacturer alleging that the defendants were involved in a series of computer-based attacks against the plaintiff’s computer systems.


Bar Admissions

  • California

Court Admissions

  • US District Court, Northern, Central, and Eastern Districts of California
  • US Court of Appeals, Ninth Circuit


  • University of Michigan, J.D., 1992: magna cum laude; Order of the Coif
  • Dartmouth College, A.B., 1989

Honors & Awards

  • Recommended by The Legal 500 US for his work in Intellectual Property: Trademarks (2020-2022), Trade Secrets (2009, 2020-2024), Copyright (2010-2013, 2015-2024), and Patent Litigation (2016)
  • Recognized by World Trademark Review 1000 – The World’s Leading Trademark Professionals (2020-2021, 2024)
  • Recognized by Managing Intellectual Property as an “IP Star” - Trademark & Copyright (2020-2023)
  • Recognized by The Best Lawyers in America® for Copyright Law (2022-2024) and Litigation - Intellectual Property (2023-2024) in San Francisco, California
  • Recognized by the Daily Journal in its “Top Trade Secret Lawyers” list of the 25 leading lawyers practicing trade secrets law in California (2021)

Professional Activities


  • American Intellectual Property Law Association
  • Federal Circuit Bar Association
  • Bar Association of San Francisco


  • “Lexology In-Depth: Trademarks,” Law Business Research Ltd.


  • “Trade Secrets: Defense of Trade Secrets Act,” Federal Circuit Bar Association, 2020 Bench & Bar® Virtual Conference (June 16 to 19, 2020)
  • “Parallel and intersecting: Representing Clients in Simultaneous Criminal and Civil Trade Secrets Proceedings,” The Daily Journal, Trade Secrets Forum (September 19, 2019)