David E. Heisey

David Heisey is a partner in the Intellectual Property Practice Group in Sheppard Mullin's Del Mar Heights office.

Areas of Practice

Mr. Heisey's practice is devoted to the representation of high technology and life sciences clients with extensive experience in patent portfolio development and patent infringement litigation. David also has significant experience in opinion and counseling, due diligence, licensing, and trademark matters.

Mr. Heisey is a registered patent attorney with experience in prosecution of patents in a variety of technologies, including clean energy, computer hardware, software and accessories, medical instruments, semiconductors, combustion engines, superchargers, aerospace applications, catheter systems, contact lenses, intraocular lenses, water purification systems, holography, document security systems, musical instruments, and more.

Mr. Heisey has recently represented clients including Western Digital Corporation, Cool Planet Biofuels, Nextec Applications, Inc., MasterCard International, CODAN US Corporation, Transonic Combustion Corporation, and Clean Energy Fuels Corporation.

Prior to joining Sheppard Mullin, Mr. Heisey was associated with the San Diego offices of Luce Forward and Lyon & Lyon. In addition, Mr. Heisey was employed as a Patent Examiner at the United States Patent and Trademark Office.

Good to know

Areas of Practice 1) Intellectual Property, 2) IP Licensing, 3) Technology and Commercial Transactions, 4) Patent Litigation, 5) Patent Prosecution and Counseling, 6) Trade Secrets, 7) Trademark Applications and Prosecution and 8) Trademarks and Trade Dress
Law School Loyola University Chicago School of Law (J.D., 1998)
Education University of Illinois (B.S.I.E., 1993)
Bar Member / Association California State Bar Association
Most recent firm Sheppard, Mullin, Richter & Hampton LLP
Relevant Jobs
Associate Attorney - Defense Litigation Experience
USA-TX-Dallas

Galloway's Dallas office is seeking an Associate Attorneys with 2 - 5 years of experience to handle civil defense litigation in a variety of practice areas. Qualified candidates will be self-starters ...

Apply now

Senior Staff Counsel – Labor & Employment
USA-MA-Charlestown

Senior Staff Counsel – Labor & Employment Massachusetts Water Resources Authority Charlestown Navy Yard   The MWRA is seeking a Senior Staff Counsel – Labor & Employment to handle leg...

Apply now

+ View more jobs
Coleen M. Meehan
Coleen M. Meehan

Coleen M. Meehan is a partner and trial lawyer in Morgan Lewis's Litigation Practice, resident in the Philadelphia office.

Eric Kraeutler
Eric Kraeutler

Eric Kraeutler is the leader of Morgan Lewis's Philadelphia Litigation Practice. His practice focuses on trials and appeals involving complex commercial, intellectual property, and white collar criminal matters.

Howard Holderness
Howard Holderness

Howard Holderness is a partner in Morgan Lewis's Litigation Practice.His clients have included some of Silicon Valley's largest technology companies; international clients, particularly in Asia; and individuals and smaller companies.