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Schwegman Lundberg & Woessner

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Areas of Practice
  • Electrical & Computers
  • Mechanical & Electromechanical
  • Medical Devices
  • Software & E-Commerce
IP Services
  • Freedom To Operate
  • Patent Prosecution
  • Patent Analytics
  • Portfolio Management & Analysis
Bar Admissions & Associations
Published Works
Past Employment Positions

Dan Li is a registered patent attorney, admitted to practice in Massachusetts and before the U.S. Patent and Trademark Office.  His practice includes patent prosecution, portfolio analysis, and freedom-to-operate opinions. In addition to his legal expertise, Dan has an accomplished background as a research scientist and inventor. This scientific experience gives him an in-depth appreciation of clients’ needs and objectives. He explains, “I help clients identify what they really want, and help them prepare a long-term plan for developing a portfolio.”

Dan’s technical background is in electrical engineering, biomedical engineering, and artificial intelligence. Before joining Schwegman, Dan was a principle research scientist. He has more than 10 years of experience in algorithm design and development in the medical device industry. As a scientist, he managed a number of research projects and clinical studies.

Being an inventor of over 50 issued patents himself, Dan has a deep understanding of inventors’ viewpoints. He understands their focuses, as well as what aspects they may tend to neglect. He has insight into what assistance inventors may need in perfecting their patent application. As Dan explains, working with inventors is one of the most rewarding aspects of his position.

Throughout his career, Dan has been fascinated by new technology. He enjoys how, as a patent attorney, he has the opportunity to learn about new developments in different industries.

Dan has a work philosophy of “planning strategically — staying focused — getting the job done.” He finds that this philosophy is key to effective time management and better work-life balance. Outside of work, he enjoys travelling. Some of his favorite destinations have included Norway and Denmark.   


William Mitchell College of Law
St. Paul, MN, J.D. cum laude, 2014 

University of Wisconsin-Madison
Madison, WI, 2002, M.S.E.E.

Signal Processing and Communication, Artificial Intelligence

University of Kentucky
Lexington, KY, 1999

Biomedical Engineering

Tsinghua University
Beijing, China, 1996, B.S.E.E.

Bar Admissions & Associations
Bar Admissions & Associations
Bar Admissions

U.S. Patent and Trademark Office

Professional Associations
American Bar Association
American Intellectual Property Law Association
Massachusetts Bar Association
Boston Bar Association


Published Works
Published Works
“Discrimination of atrial tachyarrhythmia using interval irregularity and morphologic complexity of the intracardiac electrograms”

Heart Rhythm, 3(5), S150, 2006

“Detection, classification, and tracking of targets”

IEEE Signal Processing Magazine, 19(2), 17-19, March 2002.

“Energy based collaborative source localization using acoustic micro-sensor array”

EURASIP Journal on Applied Signal Processing, 4:321-337, March 2003.

“Tracking rhythmicity in nonstationary quasi-periodic biomedical signals using adaptive time-varying covariance”

Computers in biology and medicine, 32(4):261-282, 2002.

“Quantifying co-evolution of nonstationary biomedical signals using time-varying phase spectra”

Annals of Biomedical Engineering, 28(9):1101-1115, 2000

Past Employment Positions
Past Employment Positions

Boston Scientific Corporation / Guidant, Principal Research Scientist and Project Lead, 2002 – 2012

Motorola Inc., Software Engineer Intern, 2000