Westman, Champlin & Koehler, P.A.

121 South Eighth Street
Suite 1100 Minneapolis Minnesota 55402 United States

Brian D. Kaul

Patent and Trademark Law

Brian Kaul is a registered patent attorney with experience preparing and prosecuting patents in a wide variety of technical areas including electrical, mechanical and software fields. He holds degrees in Electrical Engineering and Aerospace Engineering. In addition to over 20 years of experience preparing and prosecuting patent (utility and design) and trademark applications, Brian has experience advising on IP strategies, and preparing patentability, validity, and non-infringement opinions. Brian has represented clients operating in a variety of technical fields including medical devices and methods, energy management systems and devices, mobile devices and applications, printing systems, computing devices, industrial process devices, control systems, device testing systems, hydraulic systems, autonomous driving systems, and other mechanical, electrical and software based systems and devices.


  • William Mitchell College of Law, JD (1996)
  • University of Minnesota, B.S. Electrical Engineering (1999)
  • University of Minnesota, B.S. Aerospace Engineering and Mechanics (1991)

Areas of Practice:

  • Patents
  • Trademarks
  • Copyright
  • Licensing
  • Portfolio Analysis
  • Freedom to operate
  • Validity/non-infringement opinions
  • Patent portfolio management and strategy
  • Post-grant proceedings

Areas of Technical Expertise:

  • Electronics
  • Medical Systems and Devices
  • Mechanical Devices
  • Fluid Mechanics
  • Process Devices
  • Software
  • Aerospace
  • Autonomous Vehicles
  • Electromechanical Devices
  • Printing Systems and Devices
  • Data Encoding
  • Laminating Devices
  • Data Storage Devices
  • Surgical Laser Systems
  • Laser Resonators
  • Chemical Delivery Systems

Representative Matters:

  • Prepared, prosecuted and supervised hundreds of patent applications, including PCT and foreign counterparts, on a variety of technologies on behalf of multi-national corporations, medium-sized businesses, small businesses, and individual inventors
  • Filed and prosecuted matters in the United States based on foreign priority filings, including PCT national phase entries
  • Advised clients regarding risk management and patent avoidance strategies, and prepared associated opinions of counsel
  • Successfully terminated accusations of patent infringement

Exemplary Patents:

  • 6,296,552 Burnishing head with fly height control spacer
  • 6,366,430 Method and apparatus for improved static angle adjustment
  • 6,386,772 Method and apparatus for communicating between printer or laminator and supplies
  • 6,411,463 Insert for dampening acoustic vibration and shielding magnetic flux for use in a disc drive
  • 6,504,489 Process control transmitter having an externally accessible DC circuit common
  • 6,977,630 Mobility assist device (Augmented head up display)
  • 7,072,764 Real time high accuracy geospatial database for onboard intelligent vehicle applications
  • 7,375,728 Virtual Mirror
  • 8,768,793 Method of reposting transactional documents
  • 9,399,135 Electronic stimulator device pulse generator circuit
  • 9,478,988 Electrical appliance energy consumption control
  • 9,539,433 Electrode implantation in a pelvic floor muscular structure
  • 9,561,668 Used transfer layer detection in a transfer printing device
  • 9,643,401 Credential production device transfer ribbon accumulator
  • 9,679,229 Credential production device card substrate rotator
  • 9,928,872 Data recovery using a multi-reader head
  • 9,962,952 Sensor for identifying registration marks on a ribbon
  • 9,970,658 Pressure relief valve with rotating damper
  • 9,732,983 Hot water service monitoring
  • 9,974,962 Alternans prevention and termination
  • 9,791,067 Flare tip valve dampening
  • 9,791,842 Electrical appliance energy consumption control
  • 9,874,203 Devices having a volume-displacing ferrofluid piston
  • 9,889,298 Electrode sling for treating stress and urge incontinence
  • 10,101,712 Energy storage device control based on commands from an electrical power distribution system
  • 10,105,981 Transfer lamination
  • 10,126,177 Semiconductor device burn-in temperature sensing
  • 10,186,879 Energy storage device power consumption management
  • 10,258,249 Graphically mapping rotors in a heart using Shannon entropy
  • 10,276,216 Data storage device filter
  • 10,362,955 Graphically mapping rotors in a heart
  • 10,421,268 Filament feeding device having a capacitive filament displacement sensor…
  • 10,461,562 Field device charging power regulation
  • 10,471,631 Electrohydrodynamic additive manufacturing systems and methods for high temperature modeling
  • 10,459,029 On-chip clock control monitoring
  • 10,628,884 Database-driven processing of algorithmic trading plans utilizing specialized user interface…
  • 10,738,897 O-ring lubrication system
  • 10,612,365 Pressure sensor capsule