David Eugene Heisey

David Eugene Heisey: Attorney with Sheppard, Mullin, Richter & Hampton LLP


David Heisey is a partner in the Intellectual Property Practice Group in Sheppard Mullin's San Diego (Del Mar) office.

Areas of Practice

David's practice is devoted to the representation of high-tech clients with extensive experience in patent portfolio development, patent infringement litigation, and trademark prosecution and enforcement. He is also experienced in inter partes review proceedings, tech transfer and IP licensing. In addition, David regularly counsels clients regarding patent validity, infringement, freedom-to-operate and enforceability.

David is a registered patent attorney with extensive experience in a variety of technologies, including wireless communications, multimedia delivery, computer graphics, artificial intelligence, power electronics, financial services, clean energy applications, medical instruments, data compression and blockchain technologies. David has recently represented clients including The Walt Disney Company, MasterCard International, and San Diego Gas & Electric. Prior to joining Sheppard Mullin, David was employed as a Patent Examiner at the United States Patent and Trademark Office.

Speaking Engagements

•Mr. Heisey is an active speaker for TechAmerica and San Diego Inventor's Forum.
•Mr. Heisey has served as a panelist for CrowdPitch events for Funding Universe.

Areas of Practice (9)

  • Intellectual Property
  • IP Licensing, Technology and Commercial Transactions
  • Patent Litigation
  • Patent Prosecution and Counseling
  • Trade Secrets
  • Trademark Applications and Prosecution
  • Trademarks and Trade Dress
  • Automotive
  • Energy, Infrastructure and Project Finance

Education & Credentials

Contact Information:
858.720.8936  Phone
858.509.3691  Fax
University Attended:
University of Illinois - Champaign, B.S., Industrial Engineering, 1993
Law School Attended:
Loyola University Chicago, J.D., 1998
Year of First Admission:
2000, California; 1998, Illinois; United States Patent , Trademark Office


•Member, TechAmerica

•Member, American Intellectual Property Law Association

•Member, San Diego Intellectual Property Law Association


Peer Reviews

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*Peer Reviews provided before April 15, 2008 are not displayed.

San Diego, California

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