David D Brush – Westman, Champlin & Koehler

David D. Brush

Patent & Trademark Attorney, Shareholder

Contact Info

David D. Brush holds an Electrical Engineering degree from the University of Minnesota and a Juris Doctor from William Mitchell College of Law (cum laude). Mr. Brush is experienced in patent preparation, prosecution, enforcement and licensing in the electronic, semiconductor, software, medical and mechanical areas. He also focuses on Paris Convention and PCT National Phase filings in the U.S. for law firms and clients residing in other countries. He worked as an Engineer for Control Data Corporation where he specialized in integrated circuit design and layout, timing and logic simulation. He is a member of the Eta Kappa Nu Electrical Engineering Honors Society.

Bar Admissions

United States Patent and Trademark Office
Minnesota State Bar
U.S. District Court for the District of Minnesota
U.S. Court of Appeals for the Federal Circuit
U.S. Court of Appeals for the Eighth Circuit

Education

William Mitchell College of Law (1993) (Cum Laude)
University of Minnesota, Institute of Technology, B.S. Electrical Engineering (1987)

Professional Affiliations

Member, American Intellectual Property Law Association
Member, Minnesota Intellectual Property Law Association
Member, Minnesota State Bar Association
Member, Hennepin County Bar Association

Honors

Minnesota Super Lawyers^® (2003-2007)
Eta Kappa Nu Electrical Engineering Honors Society

Areas of Practice

Patents
Trademarks
Copyright
Licensing
Portfolio Analysis
Freedom to Operate
Validity/Non-Infringement Opinions
PCT National Phase Filings in the U.S.
Paris Convention Filings in the U.S.
Due Diligence
Patent Portfolio Management and Strategy
Post-Grant Proceedings

Areas of Technical Expertise

IC Design and Fabrication
Data Storage and Media
Telecommunications
Mobile Devices
Encryption/Decryption
Computer Hardware/Software
Semiconductors
Signal Processing
Mechanical Devices
Electrolysis
Medical Devices
Industrial Floor Cleaners
Material Science including Semi-conductors
Optical Technologies
Industrial Process Sensors
Process Inspection Tools
Plasma Discharge
Authentication and Security

Industry Experience

Control Data Corporation, Bloomington, Minnesota
Electrical Engineer (January, 1987 – June, 1989)
Integrated Circuit Design/Simulation
Engineering Intern (1984, 1985, 1986)

Exemplary Patents

U.S. 8,236,147 Tubular Electrolysis Cell and Corresponding Method
U.S. 8,016,996 Method of Producing a Sparged Cleaning Liquid Onboard a Mobile Surface Cleaner
U.S. 7,931,811 Dielectric Barrier Reactor Having Concentrated Electric Field
U.S. 7,549,212 Method of Adjusting Recession of an Element of a Slider
U.S. 7,539,890 Hybrid Security Clock
U.S. 7,502,982 Iterative Detector with ECC in Channel Domain
U.S. 7,424,687 Method and Apparatus for Mapping Design Memories to Integrated Circuit Layout
U.S. 7,305,129 Methods and Apparatus for Populating Electronic Forms From Scanned Documents
U.S. 7,231,019 Automatic Identification of Telephone Callers Based on Voice Characteristics
U.S. 7,002,493 Boolean Logic Tree Reduction Circuit
U.S. 6,816,562 Silicon Object Array With Unidirectional Segmented Bus Structure
U.S. 6,548,009 Method for Controlling Twist Curvature of a Disc Head Slider
U.S. 6,262,634 Phase-locked loop with Built-in Self-Test of Phase Margin and Loop Gain
U.S. 6,224,279 Keyboard Having Integrally Molded Keyswitch Base
U.S. 5,909,276 Method for Detecting Particles and Defects on Substrates in Integrated Process Tools
U.S. 5,872,494 Level Gage Waveguide Process Seal Having Wavelength-Based Dimensions
U.S. 5,727,110 Electro-Optic Interface for Field Instrument
U.S. 5,633,899 Phase Locked Loop for High Speed Data Capture of a Serial Data Stream
U.S. 5,619,420 Semiconductor Cell Having a Variable Transistor Width
U.S. 2013/0240774 Neutron Detection Chip Assembly