Craig A. Summerfield

Patent Attorney - Partner


direct: 312.854.8371

main: 312.291.0860

fax: 312.291.0864





Professional Experience

Craig Summerfield has extensive experience drafting and prosecuting applications in electrical and mechanical fields of art. With several large companies as clients, Craig assists with managing, maintaining and developing large patent portfolios. He develops and works with processes for handling large volume throughput of intellectual property with quality.


Craig has also worked with smaller companies and start-ups. By leveraging ideas, the market share of these clients is protected.


He regularly obtains patents in medical imaging, digital signal process, wireless communications, computer interface, computed tomography, ultrasound, physiological sensors, satellite and cellular communications, computer networks and internet structure and software.


Craig also assists clients in dealing with patent assertions by others, frequently providing opinions based on non-infringement and/or invalidity. By working on opinions and regularly providing seminars on recent developments in patent law, he is better able to draft and prosecute applications to avoid pitfalls.


Legal Experience

Prior to forming Lempia Summerfield Katz LLC, Craig was a partner at Brinks Hofer Gilson & Lione. His 15+ years there provided invaluable experience , including both the litigation and prosecution side of patent law.

Non-Legal Experience

Craig's career began as a lab technician and Assistant Liaison Engineer for Great Plains Industries in Wichita, Kansas.


Honors and Distinctions

bullet Leading Intellectual Property Lawyer, Leading Lawyers Network, Law Bulletin Publishing Company, 2010

bullet Notes & Comments Editor, Law Review, IIT Chicago-Kent College of Law, 1992-1993

bullet Staff Member, Law Review, IIT Chicago-Kent College of Law, 1991-1992


Civic Activities

bullet Director, District 205 Foundation, 2011-present

bullet Chairman of the Board, Elmhurst Jaycees 2006-2010

bullet President, Elmhurst Jaycees, 2004-2005




primary expertise areas

Medical Imaging

Computer Networks

Electrical Engineering

Patent Prosecution



state bar admissions




U.S. Patent & Trademark Office



J.D., with highest honors,

Illinois Institute of Technology,

Chicago-Kent College of

Law, 1993


B.S., with honors,

Electrical Engineering,

University of Kansas, 1990