About The Firm (PDF)
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Class Materials
UMN 2014-2015
Contact Information
Shumaker & Sieffert, P.A.
1625 Radio Drive
Suite 300
St. Paul, MN 55125
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P. 651-735-1100
F. 651-735-1102

Kent Sieffert
p. 651-286-8341
e. sieffert@ssiplaw.com

Technology Areas
Michigan Technological University - B.S. Electrical Engineering 1989, summa cum laude

University of Michigan - M.S. Computer Engineering 1991

University of Minnesota - J.D. 1998, cum laude
Bar Admissions
Registered to practice before the U.S. Patent & Trademark Office. Admitted to the bar in Minnesota.
Professional Experience
Kent J. Sieffert is a founding Principal of Shumaker & Sieffert. He is a registered patent attorney specializing in complex electrical and software technologies. Prior to founding Shumaker and Sieffert, Kent was a patent attorney at the firms of Fish & Richardson and Schwegman, Lundberg, Woessner and Kluth.

Kent's practice includes all facets of patent prosecution, strategic counseling on patent portfolio management and development, opinions, and presuit investigations. Kent works with a broad spectrum of companies nationally from established fortune 100 companies to dot com startups. His graduate research at the University of Michigan included the design of high-performance RISC-based microprocessors.

Prior to his career as a patent attorney, Kent worked as a Senior Design Engineer for Minnesota Mining and Manufacturing (3M) where he was project leader and principal software architect for several medical imaging products. As an engineer, Kent developed software systems and web-based solutions using Java, XML, C++, Pascal, LISP, CLOS, Fortran and several assembly languages. In addition, Kent is an inventor on several software patents.
Representative Technologies
* Color Imaging
* Networking
* Wireless Communication
* Medical Devices
* Business Methods
* Data Storage
Representative Patents (written, prosecuted or invented)
WO0052573 - Method and System for Updating Read-Only Software Modules
WO0138992 - Quorum Resource Arbiter within a Storage Network
WO0142925 - Volume Stacking Model
WO0138987 - Storage Management System having Common Volume Manager
WO9923605 - Method and Device for Calibrating an Imaging Apparatus having Multiple Imaging Outputs
6,041,345 - Active Stream Format for Holding Multiple Media Streams
6,006,241 - Production of a Video Stream with Synchronized Annotations Over a Computer Network
5,974,427 - Method and Computer System for Implementing Concurrent Accesses of a Database Record by Multiple Users
5,752,243 - Computer Method and Storage Structure for Storing and Accessing Multidimensional Data
6,016,553 - Method, Software and Apparatus for Saving, Using and Recovering Data
6,081,462 - Adjustable Delay Circuit for Setting the Speed Grade of a Semiconductor Device
5,675,540 - Non-Volatile Memory System Having Internal Data Verification Test Mode
5,903,504 - Op Amp Circuit with Variable Resistance and Memory System Including Same
6,100,991 - Near Normal Incidence Optical Assaying Method and System Having Wavelength and Angle Sensitivity
5,994,150 - Optical Assaying Method and System Having Rotatable Sensor Disk with Multiple Sensing Regions
5,986,762 - Optical Sensor Having Optimized Surface Profile
5,925,878 - Diffraction Anomaly Sensor Having Grating Coated with Protective Dielectric Layer
6,101,407 - Method and System for Remotely Viewing and Configuring Output from a Medical Imaging Device
5,986,672 - Method and System for Forming a Rotated Image on an Imaging Element Using Limited System Resources
6,047,081 - Image Processing Software System Having Configurable Communication Pipelines
5,991,008 - Scanner Facet Height Error Compensation Having Selective Pixel Modification
6,108,442 - Characterization of Color Imaging Systems
5,781,206 - Apparatus and Method for Calibrating a Multi-Color Imaging System
5,764,953 - Computer Implemented System for Integrating Active and Simulated Decisionmaking Processes
5,754,448 - System and Method for Color Characterization and Transformation
5,750,961 - Method for Controlling the Actual Temperature of an Intermittently Operated Heating Means, Particularly of an Electric Heating Means
5,726,425 - Tubular Heating Element with Elastic Electrode
5,726,425 - Method and Apparatus for Heat Treatment of an Element by Treatment Devices Engaging the Element on Both Sides
5,630,101 - System for Communication of Image Information Between Multiple-Protocol Imaging Devices
5,457,778 - Imaging Apparatus Using Reusable Software Architecture and Method of Providing Software Control for a Plurality of Imaging Products
WO0023793 - Optical Sensor Having Dielectric Film Stack
WO9942943 - Digital Image Management System Having Method For Managing Images According to Image Groups