CV for David Schaafsma
`dschaafsma@calopten.com
`
`Selected Expertise
` Medical product design /
`development
` Optics – geometric, diffractive,
`waveguide, optical technology,
`optical materials, optical systems
`design
` Networks, data links, protocols
` Fiber optics, optical sensors
` Lasers & light systems, illumination
` Infrared materials & technology
` Imaging & microscopy (SEM &
`optical), spectroscopy
` Signal and image processing
` Spectroscopy, optical materials
`analysis
`
` Embedded computer systems,
`microcontrollers
` Software & programming,
`Embedded & high level languages
` Electronics, embedded design
` Sensors, data acquisition
` Semiconductor metrology,
`photovoltaics, renewables
` Project planning, management
` ISO 9000, SPC, GMP
` Tooling, process development
` Market, patent research
` Grant writing
` Expert witness
`
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`CV for David Schaafsma
`dschaafsma@calopten.com
`
`Employment History
`
`California Optical Engineering, Inc.
`2004
`From:
`Present Escondido, CA
`To:
`Position:
`President & Principal
`
`Consulting in technology & product development (primarily medical and
`industrial), over 40 associates. Specialized in software and hardware (electronics,
`sensors, optics) development for medical devices, communications systems, and
`sensing. Recent projects have included:
` • Optical bilirubinemia measurements for neonates
` • image-based and sequential (point) genetic assays (fluorescent)
` • smartphone-compatible optical assay systems
` • pulse oximetry and optical blood pressure monitoring
` • optical blood glucose monitoring
` • confocal fluorescence microsopy
` • optical markers of glucose concentration in the eye (lens and aqueous humor)
` • optical pattern recognition for anti-counterfeit systems, development of
`optically-functional coatings
` • ophthalmic thermal therapy devices
` • design and validation of endoscopes/laryngoscopes
` • design and construction of microscope systems for fluorescent assays
` • laminar flow and lab-on-a-chip systems, colorimetric and fluorescent
` • embedded systems for dosimetry & flow measurement
` • in-vivo flow measurement for insulin dosimetry
` • ECG/MCT monitors
` • machine-vision flow control systems
` • monitoring of optical ablation of arterial plaque
` • design and experimentation for in-vivo optical probes
` • machine vision for computer aided surgery
` • colorimetric measurement of fluid concentration
` • design of ophthalmic instruments for early detection of eye disease
` • image processing for hyperthermia
` • robotic automated animal marking systems
` • polymer materials analysis & evaluation for angiography and angioplasty
` • high-speed hybrid optical-electronic data networks
` • research and experimentation on optical data storage media
` • optical semiconductor metrology
` • optical materials for packaging and tracking
` • infrared optical imaging for cancer detection
`
`
`Core specialty areas include electronics (sensors, embedded systems, optical data
`transport, eCAD, programmable logic/VHDL, ARM, AVR, FPGA, DSP), software
`
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`CV for David Schaafsma
`dschaafsma@calopten.com
`(Linux/Windows, C/C++, Java, assembly, Python), and optics (systems level design
`to ray trace/non-sequential modeling using Zemax, Matlab).
`
`2006
`From:
`2009
`To:
`Position:
`
`Computer Aided Surgery Associates
`La Mesa, CA
`Vice President of Engineering
`
`Developed and demonstrated non-contact alignment system for prosthesis
`placement (navigation) during total knee arthroplasty (TKA). Image-guided system
`used dual-band stereoscopic camera system with image processing to analyze
`alignment and provide feedback to surgeons. Early sponsorship from leading
`orthopedic companies.
`
`2006
`From:
`present
`To:
`Position:
`
`California State University
`San Marcos, CA
`Adjunct Professor of Applied Physics
`
`Teach and develop curriculum in electronics, optics, and physics. Oversee student
`research projects, initiate industry collaboration with university. Lead academician
`in embedded systems/electronics focus of Applied Physics program, and nascent
`Electrical Engineering program.
`
`From:
`To:
`Position
`
`1999
`2004
`
`Ipitek/Tetra Tech Data Systems
`Carlsbad, CA
`Director of Sensor Products
`
`Responsible for overall management and technical leadership of fiber optic sensor
`group (scientists, engineers, salespeople, and technicians):
` R&D, product management, engineering, business development, sales &
`marketing.
` Instrument electronic design: photoreceivers (e.g. low noise, high linearity and
`high speed), embedded processing (uC/PGA, DSP), interfacing (serial,
`Ethernet, some USB, displays, keypad, etc.), CPLD & FPGA (Xilinx) design.
` Redesigned temperature sensor product, improving performance & cost.
` Initiated supplier relationships with semiconductor, medical, automotive,
`aerospace customers.
` Designed, built, tested and sold instrumentation for semiconductor metrology,
`particularly wafer processing machinery, some deposition equipment.
` Designed, built, tested, and sold instrumentation for medical thermal therapy
`equipment, particularly hyper- and hypo-thermic methods.
` Software development: embedded processing (ARM, 8051, x86, eZ80), DSP
`(Analog/TI), scientific computing, numerical modeling.
`
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`CV for David Schaafsma
`dschaafsma@calopten.com
` Conceived, initiated, & directed R&D and product development in thermal,
`acoustic, pressure, biological, chemical, and e-field sensors, as well as
`communications devices & systems.
` Other R&D projects: millimeter-wave links, DWDM/UDWDM networks,
`wavelength cross-connects, fiber optic switches, avionics networks, free space
`optical communications, laser tracking systems, optical beam steering, and
`secure communications. Over 30 patent disclosures & 2 patent applications.
`
`1996
`From:
`1998
`To:
`Position:
`
`U.S. Naval Research Laboratory
`Washington, DC
`Senior Scientist
`
`Developed devices & applications for chalcogenide (CG) fibers and integrated
`optics. Authored three patents, several publications resulting from research. R&D
`accomplishments: first chalcogenide SM fused coupler, first IR singlemode near-
`field optical microscope probe, first model of 1.3 um CG fiber amplifiers, made CG
`fiber Bragg gratings. Built electro-mechanical system for fiber tapering. Wrote
`optical amplifier modeling code in C using open source compiler (Windows
`platform). Other R&D areas: IR scene simulation, Raman amplifiers in CG,
`chemical sensors, microlensed fibers, photosensitive waveguides & photo-doping.
`
`1992
`From:
`1996
`To:
`Position:
`
`National Institutes of Standards and Technology
`Boulder, CO
`Research Associate
`
`R&D in quantum optics of vertical-cavity surface-emitting semiconductor lasers. Set
`up, instrumented, wrote code for, and maintained optical characterization
`laboratory. Provided primary optical characterization support for all structures
`grown in NIST MBE machine. Designed, modeled, characterized laser structures
`for MBE growth. Wrote code for multilayer dielectric modeling with complex index
`using Borland C++. Designed instrumentation and wrote instrument control
`software (in Borland C) for photon counting spectroscopy system (noise floor 4
`photons). Other measurements: reflectance, photoluminescence, DCXRD, SEM, and
`X-ray. Other R&D accomplishments: quantum well interdiffusion, crosstalk in
`VCSEL arrays, angular and spectral dispersion of and spectral drift of the
`fundamental lasing mode in VCSELs.
`
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`CV for David Schaafsma
`dschaafsma@calopten.com
`Bandgap Technology Corporation
`Broomfield, CO
`Senior Characterization Engineer
`
`1989
`From:
`1992
`To:
`Position:
`
`Primary quality control officer for a start-up compound semiconductor
`manufacturing company. Designed & supervised construction of characterization
`laboratory with budget over $2M. Developed and maintained characterization
`facilities (hardware, software, training, calibration, etc). Wrote numerous GUI
`instrument control & data acquisition applications for HP Unix workstations using
`XWidget & Athena toolkits. Primary technical interface to customers. Responsible
`for analysis and interpretation of all wafer test data. Set up and administered HP
`9000 Unix cluster network for characterization and manufacturing. Trained and
`supervised technicians and engineers, implemented SPC. One of 4 lead engineers
`responsible for design and equipping of 2000 sq-ft Class 10 clean room. Techniques
`used: PL, photoreflectance, parametric testing, C-V profiling, Hall effect,
`resistivity/particulate screening, Nomarski microscopy, DCXRD, and RF device
`characterization.
`
`Patents
`
`Patent
`Number
`6,285,811
`5,949,935
`
`Date
`Issued
`2001
`1999
`
`Title
`
`Near-field optical microscope with infrared fiber probe
`Infrared optical fiber coupler
`
`Title
`
`
`
`Date
`
`Application
`
`Number
`US20060191566A1 2006
`
`Solar concentrator system using photonic engineered
`materials
`US20070246040A1 2006 Wide angle solar concentrator
`US20060174867A1 2004
`Nonimaging solar collector/concentrator
`US20060233492A1 2006
`Optical beam combiner/concentrator
`US20080170826A1 2007 Misalignment-tolerant optical coupler/connector
`WO2001027961A2 1998
`Coated cathodoluminescent phosphors
`
`Education
`
`College/University
`University of Colorado, Boulder, CO
`Brown University, Providence, RI
`Whitman College, Walla Walla, WA
`
`Degree
`Ph.D., Physics
`M.S., Physics
`B.A., Physics
`
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`

`CV for David Schaafsma
`dschaafsma@calopten.com
`
`2.
`
`3.
`
`4.
`
`Publications / Presentations
`1.
`“Comparison of analysis methods for fluorescence lifetime imaging,” T. Hall,
`D.A. Dorroh, S.E. Robertson, and D.T. Schaafsma, SPIE BIOS/Photonics West,
`Paper #8227 (2012).
`“Fiber pressure sensors based on periodical mode coupling effects,” Haim
`Lotem, Wen C. Wang, Michael Wang, David Schaafsma, Bob Skolnick, and
`Haim Grebel, Proc. SPIE 5758, 239 (2005).
`“All-dielectric miniature wide-band RF receive antenna,” Wen Wang,
`Weiping Lin, Hank Marshall, Bob Skolnick, and David Schaafsma, Opt. Eng,
`43, (2004).
`“Electro-optic RF receive antenna,” Wen C. Wang, Weiping Lin, Hank
`Marshall, David Schaafsma, and Richard Chaung, SPIE Digital Wireless
`Communication V 5100, 149 - 156 (2003).
`“Fiberoptic temperature sensors for medical applications,” David Schaafsma,
`Gail Palmer, and James Bechtel, Proc. SPIE, (2003).
`“Efficacy and Performance of Emissivity Cancellation Probes for Pyrometric
`Systems,” M. Fisher and D. Schaafsma, RTP 2000, Balitmore, MD, Sept. 2000.
`“Aircraft Fail-Safe Self-Monitoring System,” Anthony C. Jackson and David
`T. Schaafsma, presented at the 4th Joint DoD/FAA/NASA Conference on
`Aging Aircraft, St. Louis, MO, May 2000.
`“Chalcogenide fibers: an overview of applications,” J.A. Moon and
`D.T. Schaafsma, Fiber & Integrated Optics 19, June 2000.
`“Comparison of conventional and gain-clamped semiconductor optical
`amplifiers for wavelength division multiplexed transmission systems,”
`D.T. Schaafsma, E. Miles, and E.M. Bradley, J. Lightwave Tech. (July 2000).
`10. "Fabrication of Singlemode Chalcogenide Fiber Probes for Scanning Near-
`Field Infrared Optical Microscopy," D.T. Schaafsma et al, Opt. Eng., (August
`1999).
`11. "Cross-Gain Modulation and Frequency Conversion Crosstalk Effects in 1550-
`nm Gain-Clamped Semiconductor Optical Amplifiers," D.T. Schaafsma and
`E.M. Bradley, Photon. Tech. Lett. 11, 727 (1999).
`12. "Singlemode chalcogenide fiber infrared SNOM probes," D.T. Schaafsma,
`R. Mossadegh, J.S. Sanghera, I.D. Aggarwal, J.M. Gilligan, N.H. Tolk, M.
`Luce, R. Generosi, P. Perfetti, A. Cricenti, and G. Margaritondo,
`Ultramicroscopy 77, 77 (1999).
`13. "First Experimental Results with the Free Electron Laser Coupled to a
`Scanning Near-Field Optical Microscope," A. Cricenti, R. Generosi, C.
`Barchesi, M. Luce, M. Rinaldi, C. Coluzza, P. Perfetti, G. Magaritondo, D.T.
`Schaafsma, I.D. Aggarwal, J.M. Gilligan, and N.H. Tolk, Phys. Stat. Sol. A 170,
`241 (1998).
`
`5.
`
`6.
`
`7.
`
`8.
`
`9.
`
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`CV for David Schaafsma
`dschaafsma@calopten.com
`14. "Cation vacancy formation and migration in the AlGaAs heterostructure
`system," P. Mitev, S. Seshadri, L. J. Guido, D. T. Schaafsma, and D. H.
`Christensen, Appl. Phys. Lett. 73, 3718 (1998).
`15. "Modeling of Dy3+-doped GeAsSe glass 1.3 m optical fiber amplifiers,"
`D.T. Schaafsma, L.B. Shaw, B. Cole, J.S. Sanghera, and I.D. Aggarwal, Photon.
`Tech. Lett. 10, 1548 (1998).
`16. “Chalcogenide optical fiber couplers for chemical sensing,
`telecommunications, and infrared lasers,” D.T. Schaafsma, L.B. Shaw, L.E.
`Busse, J.S. Sanghera, and I.D. Aggarwal, CLEO 98, paper CThP4 (1998).
`17. "Dy3+-doped GeAsSe 1.3 m optical fiber amplifiers," L.B. Shaw, D.T.
`Schaafsma, B.J. Cole, P. Pureza, R. Mossadegh, V.Q. Nguyen, J.S. Sanghera,
`and I.D. Aggarwal, presented at CLEO '98.
`18. "Rare earth doped selenide glass optical sources," L.B. Shaw, B. Cole,
`D.T. Schaafsma, B.B. Harbison, J.S. Sanghera, and I.D. Aggarwal, presented at
`OFC '98.
`19. "Rare earth doped glass fibers as sources for IRSS," L.B. Shaw, D.T.
`Schaafsma, B.J. Cole, B.B. Harbison, J.S. Sanghera, and I.D. Aggarwal,
`presented at AeroSense '98.
`20. "Dy-doped selenide glass for 1.3 mm optical fiber amplifiers," L.B. Shaw, B.J.
`Cole, J.S. Sanghera, I.D. Aggarwal, and D.T. Schaafsma, presented at OFC '98.
`21. "Fabrication of Singlemode Chalcogenide Optical Fiber," R. Mossadegh,
`D.T. Schaafsma, J.S. Sanghera, V.Q. Nguyen, R.A. Miklos, and I.D. Aggarwal,
`J. Lightwave Technol. 16, 214 (1997).
`22. "Fused taper infrared optical fiber couplers in chalcogenide glass," D.T.
`Schaafsma, J.A. Moon, J.S. Sanghera, and I.D. Aggarwal, J. Lightwave
`Technol. 15, 214 (1997).
`23. “Mode splitting in vertical-cavity microlasers from side-emission
`measurements,” D.T. Schaafsma and D.H. Christensen, CLEO 97, paper
`CWG4 (1997).
`24. “Evaluation of the IR transitions in rare-earth doped chalcogenide glasses,”
`L.B. Shaw, D.T. Schaafsma, J.A. Moon, J.S. Sanghera, B.B. Harbison, and I.D.
`Aggarwal, CLEO 97, paper CWF48 (1997).
`25. “Cavity coupling in vertical-cavity semiconductor lasers,” D.T. Schaafsma
`and D.H. Christensen, NIST Technical Note #5047 (1997).
`26. “Mode splitting in side emission from vertical-cavity surface-emitting lasers,”
`D.T. Schaafsma and D.H. Christensen, Phys. Rev. B 54, 14618 (1996).
`27. “Cross-sectional microphotoluminescence and buried layer structures,”
`D.H. Christensen and D.T. Schaafsma, 1995 OSA Annual Meeting, p.124,
`Portland, OR, Sept 10-15 (1995).
`28. “Cross-sectional photoluminescence and its application to buried-layer
`semiconductor structures,” D.T. Schaafsma and D.H. Christensen, J. Appl.
`Phys. 78, 694 (1995).
`29. “Vacancy diffusion and Al-Ga interdiffusion in quantum well
`heterostructures,” S. Seshadri, P. Mitev, L.J. Guido, S. Smith, R.D. Burnham,
`
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`CV for David Schaafsma
`dschaafsma@calopten.com
`D.T. Schaafsma, and D.H. Christensen, Proc. 21st Intl. Symp. On Compound
`Semiconductors, San Diego, CA (1994).
`30. “Correlation of optical, X-ray, and electron microscopy measurements on
`semiconductor multilayer structures,” D.H. Christensen, R.K. Hickernell,
`D.T. Schaafsma, J.G. Pellegrino, M.J. McCollum, and R.S. Rai, in Spectroscopic
`Characterization Techniques for Semiconductor Technology V, SPIE Proc.
`2141, 177 (1994).
`31. “A self-consistent investigation of coupled vacancy and host-atom diffusion
`in AlGaAs:GaAs quantum well heterostructures,” S. Seshadri, P. Mitev, L.J.
`Guido, D.T. Schaafsma, D.H. Christensen, M.J. McCollum, S. Smith, and R.D.
`Burnham, Electronic Materials Conference (1994).
`32. “Measurement and simulation of photoluminescence spectra from vertical-
`cavity surface-emitting laser structures,” D.T. Schaafsma, R.K. Hickernell, and
`D.H. Christensen, in Quantum Well and Superlattice Physics V, SPIE Proc.
`2139, 93 (1994).
`33. “Comparative photoluminescence measurement and simulation of vertical-
`cavity semiconductor laser structures,” D.T. Schaafsma, R.K. Hickernell, and
`D.H. Christensen, in Growth, Processing, and Characterization of
`Semiconductor Heterostructures, MRS Symp. Proc. 326, 483 (1994).
`34. “Rapid growth of thick, IC quality GaAs from a flowing solution,” E.E.
`Crisman, C.B. Roberts, D.T. Schaafsma, and H.J. Gerritsen, Fall MRS Meeting,
`Boston, MA (1989).
`
`Organizations/Affiliations
`
`- Executive Editor, Fiber & Integrated Optics (peer-reviewed bi-monthly technical
`journal published by Taylor & Francis)
`- Past Member of American Physical Society, Institute of Electrical & Electronics
`Engineers, Materials Research Society
`
`Litigation/Expert Witness Experience
`
`Start Date
`
`Client/Case
`
`2020-present
`
`Troutman-Pepper-Hamilton, LLP
`[confidential]
`Dental technology intellectual property case.
`Consulting and preparation for district court trial
`Filed declaration in support of Markman hearing
`
`2018-20
`
`Pepper-Hamilton, LLP
`Buchanan, Ingersoll, & Rooney PC
`
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`CV for David Schaafsma
`dschaafsma@calopten.com
`[confidential]
`Dental technology intellectual property case.
`IPR report consulting and preparation.
`Deposed Feb. 2020.
`
`Crites Law Group
`[confidential]
`Consulting on personal injury case involving automated biopsy
`equipment.
`
`Walkup, Melodia, Kelly & Schoenberger
`[confidential]
`Consulting on personal injury case involving laser-based
`bronchoscopy.
`
`Perkins Coie, LLP
`[confidential]
`Consulting on IP challenge for biotechnology
`
`Frantz Law Group, APLC
`Nield Law Group, APC
`[confidential]
`Consulting on wrongful death case involving a wearable
`continuous glucose monitor.
`
`Pepper-Hamilton, LLP
`Buchanan, Ingersoll, & Rooney PC
`[confidential]
`Dental technology intellectual property case.
`Prepared expert validity report for ITC
`Deposed July 2018.
`Testified at ITC court, Washington, DC, Sept. 2018
`Deposed August 2019
`Testified at ITC court, Washington, DC, Oct. 2019
`
`Perkins Coie, LLP
`[confidential]
`Nathan Kassebaum, Atty. Joe Hamilton, Ptr.
`Prepared expert declaration for IPR (new filing).
`Deposed March 2018.
`
`2018-20
`
`2019
`
`2019
`
`2018
`
`2018-19
`
`2018-19
`
`2017
`
`Stradley, Ronon, Stevens & Young, LLP
`[confidential]
`
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`judgment
`
`2017
`
`2016/7
`
`2016
`
`claim
`
`2015
`
`assays
`
`2015
`
`2012-2013
`
`2012
`
`2012
`
`CV for David Schaafsma
`dschaafsma@calopten.com
`Prepared expert declaration for trade secret case. Initial
`for defendant
`
`Perkins Coie, LLP
`[confidential]
`Prepared expert declaration for IPR. Deposed June 2017.
`
`Latham & Watkins, LLP
`Ikaria-Mallinckrodt v. Praxair
`IP litigation for nitric oxide therapy. Prepared expert report.
`Deposed Dec. 2016
`Testified in federal court, Delaware, Mar. 2017
`
`[Confidential, cosmetic surgery industry]
`Intellectual property - Pre-complaint analysis (confidential),
`chart preparation
`
`Goodwin-Procter, LLP
`Alere v. Family Health
`Intellectual Property – Review of IPR filing for lateral flow
`and flow measurement.
`
`Perkins-Coie, LLP
`Lara Dueppen, Atty.
`Intellectual Property - Patent infringement analysis & report
`for e-cigarettes.
`
`Molever-Conelly, LLP
`[confidential]
`Product Liability – negligent product service resulting in loss of
`business.
`Performed product testing, provided expert opinion (reports).
`Deposed Jun. 2013,
`Testified at trial Aug. 2013 (judgment for plaintiff).
`
`James R. Rogers
`[confidential]
`Personal Injury – product liability, testing of external pacemaker
`Performed data analysis, product testing.
`
`Weiss & Moy, LLP
`Pacific Bioscience Laboratories v. Nutraluxe
`Intellectual Property – skin brushes
`
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`2011
`
`2011-2013
`
`2010
`
`2009
`
`2007-8
`
`CV for David Schaafsma
`dschaafsma@calopten.com
`Performed data analysis, product testing, provided expert
`opinion.
`
`CareFusion 303, Inc. v. Sigma International
`Intellectual Property – infusion pump technology.
`Performed product analysis and provided part of expert
`opinion.
`
`Hogan-Lovells, LLP
`Alere/Inverness v. Church & Dwight
`Intellectual Property – pregnancy test device.
`Performed product analysis and interpretation. Settled 2013.
`
`Scheuring, Zimmerman& Doyle, LLP
`Fonti. v. Wilmarth
`Personal Injury – product liability, electrosurgical device
`Performed data analysis, product testing, provided expert
`opinion.
`
`Peach-Weathers
`Franklin v. Ladies' Workout and Omron, Inc.
`Personal Injury – body fat analyzer
`Performed product analysis, testing, expert declaration.
`
`McKool-Smith
`Medtronic USA, Inc. v. Boston Scientific, Scimed
`Life Systems Inc., and Boston Scientific Scimed, Inc.
`Patent Infringement – angioplasty balloon/stent catheters
`Performed patent analysis, product testing, claim construction
`analysis, expert declaration and reports.
`
`IP Development/Analysis
`
`Date
`
`2019
`
`2015
`
`2014
`
`Client
`
`[Confidential]
`IP development for pediatric audio company.
`
`[Confidential]
`Due diligence for acquisition of vascular therapy company.
`
`Convergent Dental, Inc.
`
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`CV for David Schaafsma
`dschaafsma@calopten.com
`IP review and analysis of possible renewed application of
`US20060233492 A1.
`
`Pacific Science & Engineering, Inc.
`Patent/IP development for closed-loop spirometer.
`
`Tearfilm, Inc.
`Patent/IP development for dry-eye (keratoconjunctivitis sicca)
`therapy device.
`
`Karasic Law Group
`Patent Issues – Personal biomonitor device (pulse, respiration)
`Performed patent analysis, product viability analysis, product
`design.
`
`Freedom MediTech, LLC
`Patent, IP validation, technology development
`Developed optical technology for ophthalmic glucose
`measurement
`
`Helixis, Inc. (now Illumina, Inc.)
`Patent & IP development
`Assisted with IP development for genetic assay system
`
`Therafuse, Inc.
`IP development
`Developed IP & prototypes for optical flow measurement
`device for drug delivery
`
`L-3 Communications
`Due diligence – technology/IP analysis for corporate
`acquisition
`
`Boston Scientific, Inc.
`Patent & IP development
`Analyzed (customer) patent for thermal therapy system
`
`2014
`
`2012-2014
`
`2008
`
`2006-12
`
`2006-9
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`2007-9
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`2003
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`2002
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`Not for Internet Distribution
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`Page 12
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`04-21
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`3SHAPE 1003 3Shape v Align IPR2021-01383
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