David W. Hansen



Patent Litigation; Intellectual Property Transactions

Palo Alto

T: +1.650.470.4560

F: 1.650.798.6513


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David W. Hansen has represented a broad range of clients in all aspects of intellectual property and other complex commercial litigation and arbitration during his more than 25 years with the firm. He regularly writes and speaks on intellectual property issues, including as a lecturer for the past eight years in the computer science department of Stanford University. He is a registered patent attorney with experience in various matters before the United States Patent and Trademark Office.

Mr. Hansen annually is ranked as a “leading lawyer” in intellectual property litigation by Chambers USA: America’s Leading Lawyers for Business. The Daily Journal has recognized him as one of California’s top intellectual property lawyers, and he is listed as a top patent litigator in The Best Lawyers in America. He is a member of the group recognized by The National Law Journal as one of the country’s leading IP practices in its 2013 “IP Hot List.”

Mr. Hansen served as the special intellectual property counsel to the Aspen Institute’s International Digital Economy Accords (IDEA) Project, which involved key government officials, business executives, nonprofit sector experts and other thought leaders. The project resulted in a report titled “Toward a Single Global Digital Economy: The First Report of the Aspen Institute IDEA Project,” which addresses the challenges and critical steps forward for establishing a fair, effective and empowering multistakeholder system for governing the flow and use of data in a single global digital economy.

He was the recipient of the State Bar of California’s Wiley W. Manual Award for Pro Bono Legal Services, given by Community Legal Services in East Palo Alto.

Representative Litigation Matters

  • SanDisk Corporation in a variety of matters, including in:

    • a patent and antitrust dispute against Kingston Technology Corporation;
    • a patent and contract dispute against STMicroelectronics;
    • a patent, contract and antitrust case against PNY Technologies;
    • a putative class action lawsuit brought by Ritz Camera against the company and its founder concerning flash memory patents and products; and
    • jointly with Hitachi Global Storage Technologies, in connection with patent litigation involving secure storage technology.
  • Seagate Technology LLC in connection with trade secret litigation brought by Western Digital.
  • MGA Entertainment in copyright and contract issues in connection with the Bratz doll litigation.
  • FlightSafety International in copyright, contract and trade secret issue in connection with litigation concerning computerized flight simulators.
  • Sun Microsystems in various patent litigations and other patent matters.
  • Yahoo! in various patent litigations and other patent matters, and in Digital Millennium Copyright Act (DMCA) litigation involving the LAUNCHcast Internet radio service.
  • McKesson in patent litigation concerning medical technology.
  • Rocket Software, Inc. in connection with copyright and trade secret litigation against Computer Associates.
  • Chicago Mercantile Exchange in copyright and trademark issues.
  • Virgin Mobile USA in DMCA and trademark litigation and other issues relating to cellular handset technology.
  • Verizon Wireless in connection with false advertising issues.

Representative Transactional Matters

  • Activision in its business combination with Vivendi Games.
  • Advanced Medical Optics in its proposed acquisition of Bausch & Lomb and its merger with Abbott Labs.
  • Apple in connection with various transactions.
  • Gateway in its acquisition by Acer and its acquisition of Packard Bell.
  • LSI Corporation in its acquisition by Avago Technologies (Singapore). Both companies are semiconductor manufacturers.
  • Nokia in the sale of its devices and services business to Microsoft.
  • SanDisk in connection with various license negotiation and enforcement issues.
  • Yahoo! in its acquisition of BlueLithium, Zimbra and other transactions.
  • Zynga in connection with various social networking and intellectual property-related issues.

Teaching Experience

Instructor, Stanford University Computer Science Department:

CS-201, “Computers, Ethics And Social Responsibility” (Guest lecturer)

CS-202, “Law for Computer Science Professionals”

Speaking Engagements

“Patent and Antitrust Issues in the Standard Setting Context,” Yahoo! Legal Department Retreat

“Patent Litigation Issues in the Corporate Deal Context,” Association of Corporate Patent Counsel, Annual Meeting

“Global Strategies for Software Protection,” Practicing Law Institute, Global Trademark & Copyright Seminar

Bar Admissions

U.S. Patent and Trademark Office


J.D., Illinois Institute of Technology, Chicago-Kent College of Law, 1984 (highest honors; Chicago-Kent Law Review)

B.S., General Engineering, University of Illinois at Urbana-Champaign, 1979


Law Clerk to the Honorable Stanley J. Roszkowski, U.S. District Court for the Northern District of Illinois