Experience

Summary

Testifying and technical expert in wireless communications technologies, with experience in patent portfolio assessments, standards essential patents, infringement and validity analysis, litigation declarations and reports, depositions and trial testimony. Award-winning innovator, educator, and academic leader in the areas of wireless communication systems and mobile networks.

Expert Witness

Ericsson / McKool Smith— Feb 2024-Present

Validity and non-infringement analysis and expert reports on behalf of defendant related to 3GPP 5G NR demodulation reference signal (DMRS) configurations, remaining minimum system information, carrier aggregation, power headroom reports, and configured grants, in US ITC Investigation No. 337-TA-1388. US Patents Nos. 11,184,130 and 11,601,896.

Evolved Wireless / Bruster PLLC — Mar 2022-Nov 2023

Claim construction declaration, depositions, and trial testimony based up validity analysis and expert report on behalf of patent owner related to 3GPP 4G LTE random access procedures and handover procedures, in US District Court, Eastern District of Texas, Marshall Division Case 2:21-cv-00033. US Patents Nos. RE46,679, and RE48,326.

Nokia / Quinn Emmanuel — Oct 2021-Present; Ericsson / McKool Smith— Dec 2022-Present

Invalidity and non-infringement analysis, expert reports, and a deposition on behalf of defendant intervenors related to OFDM carrier frequency offset (CFO) estimation and channel estimation in the context of 3GPP LTE standards, in US District Court, District of Minnesota, Cases 14-cv-4666, 14-cv-4669, 14-cv-4671, 14-cv-4672. US Patents Nos. 8,588,317, 8,718,185, and 8,774,309.

Wi-LAN / Nelson, Bumgardner, & Albritton— Jul 2020-Sept 2021

Claim construction and preliminary infringement analysis on behalf of patent owner related to 3GPP priority transmissions of voice alongside data, in US District Court, Northern District of Illinois, Eastern Division Case 1:19-cv-00941. US Patents Nos. 8,787,924 and 9,497,743.

Evolved Wireless / Nelson, Bumgardner, & Albritton— Jan 2020-Dec 2021

Validity analysis, expert report, and deposition on behalf of patent owner related to 3GPP 4G LTE random access procedures and handoff procedures, in US ITC Investigation No. 337-TA-1253, US District Court, Eastern District of Texas, Marshall Division Case 2:21-cv-00033, and US District Court, Northern District of Illinois, Chicago Division Case 1:21-cv-00567. US Patents Nos. 10,517,120, RE46,679, and RE48,326.

HTC / Williams, Simons, & Landis— Feb 2020-Jun 2020

Claim construction analysis and declarations on behalf of defendant related to anti-theft protection for mobile cellular devices, in US District Court, Western District of Washington No. 2:18-cv-01732-RSM. US Patent No. 6,836,654.

Google / Jones Day— Sept 2019-Apr 2020

Claim construction analysis, declarations, and draft invalidity report on behalf of defendant related to anti-theft protection, handing off network connections to stationary devices, and acoustic authentication for mobile cellular devices, in US District Court, Eastern District of Texas, Marshall Division Case Nos. 2:18-cv-00493, 2:18-cv-00499, and 2:18-cv-00552, respectively. US Patent Nos. 6,836,654, 8,194,632, and 9,564,952, respectively.

Ericsson / McKool Smith — Nov 2020-May 2021

Validity analysis for patent owner related to signaling for MIMO precoding (FD-MIMO, PMI, codebook subset restriction) and channel estimation (CSI-RS formats, density), in US District Court, Eastern District of Texas, Marshall Division Case No. 2:20-cv-00380-JRG. US Patent Nos. 10,193,600 and 10,516,513.

Apple / Wilmer Hale — Feb 2020-Aug 2020

Review asserted patent and selected prior art for invalidity contentions on behalf of defendant in the area of pilot and control signaling, channel estimation, and related mobile and basestation interactions in cellular OFDM systems such as WiMAX and LTE, in US District Court, Eastern District of Texas, Marshall Division Case Nos. 2:19-cv-00066. US Patent No. 9,001,774.

Nokia / Quinn Emmanuel — Sept 2018-Mar 2019

Non-infringement expert report and deposition on behalf of defendant on Self-Organizing Network (SON) technology in 3GPP cellular networks, in US District Court, Eastern District of Texas, Marshall Division Case No. 2:17-cv-00042. US Patent Nos. 8,977,284, 9,510,320, and 9,642,024.

Qualcomm / Jones Day — Feb 2018-Nov 2018

Infringement and validity expert reports, standards essential patent analysis, and deposition on behalf of patent owner on the topics of 3GPP UMTS and LTE ARQ protocols as well as 3GPP UMTS Multiflow technology, in US District Court, Southern District of California Case Nos. 3:17-cv-00108 and 3:17-cv-01010. US Patent Nos. 6,694,469 and 8,867,494.

Huawei / Sidley Austin — Feb 2018-Aug 2018

Validity expert declarations and deposition on behalf of patent owner on the topic of conditional timing alignment commands for 3GPP LTE random access protocols and MAC control signaling, in US Patent Trial and Appeal Board, Case No. IPR2017-01473. US Patent No. 8,885,583.

Huawei / Fish & Richardson — Jan 2017-Sept 2017

Claim construction arguments and invalidity analysis on behalf of defendant in the area of 3GPP LTE control signaling and random access protocols, specifically multiplexing of scheduling request (SR) and ACK/NACK messages, discontinuous transmission (DTX) detection and recovery, and ordering of random access (PRACH) sequences, in US District Court, Eastern District of Texas, Marshall Division Case Nos. 2:16-cv-00755 and 2:16-cv-00756. US Patent Nos. 8,121,082, 8,165,035, 8,249,022, and 8,451,787.

Apple, Inc. / Wilmer Hale— May 2015-Aug 2015

Review asserted patents and selected prior art for invalidity contentions on behalf of defendant on the topics of 3GPP LTE Buffer Status Reports, ARQ protocols, and MAC and RLC notifications, in US International Trade Commission Investigation No. 337-TA-953. US Patents 8,717,996, 8,660,270, 6,058,359, 6,301,556, 8,102,805, 8,607,130, 8,837,381, and 8,331,476.

Atlas IP, LLC / Stadheim & Grear — Nov 2013-Nov 2014

Claim construction arguments, infringement and validity reports, as well as depositions on behalf of patent owner in the area of low-power medium access control protocols for wireless medical devices, in US District Court, Southern District of Florida, Case Nos. 1:13-cv-23309 and 1:14-cv-21006. US Patent No. 5,371,734.

Hewlett-Packard Company / DLA Piper — Dec 2007-Feb 2008

Expert investigations, technical report, and deposition on behalf patent owner in the area of liquid crystal display (LCD) technology, in US ITC Investigation No. 337-TA-606. US Patents Nos. 6,691,236, 6,029,119, 5,353,415, and 6,894,706.

Portfolio Assessment

DirecTV / Bayside Law— Feb 2012-June 2012

Assessed large patent portfolio of wireless technologies on behalf of patent owner for inclusion in IEEE 802.11 (WiFi) & 3GPP LTE standard patent pools. Identified one patent, i.e., US Patent No. 6,675,348, that was determined to be essential to the IEEE 802.11n standard and added to a patent pool.

Digitude Innovations LLC— Nov 2010-Dec 2010

Assessed patent portfolio on adaptive and multi-antenna wireless transmission technologies on behalf of patent owner. US Patent Nos. 7,602,837, 7,627,325, 7,590,184 and 7,623,599.

Source Code Expert

NXP / Jones Day — Apr 2021-Dec 2021

Patent review and source code study related to dual sub-carrier modulation and high-efficiency common signaling formats in WiFi / WLAN, in US ITC Investigation No. 337-TA-1272. US Patents Nos. 10,200,228, 10,264,580, and 10,616,017.

Motorola Mobility / DLA Piper — Aug 2012-June 2013

Software architecture and source code analysis, supported testifying experts, and helped draft non-infringement report on behalf of defendant in the area of digital video recorder (DVR) technology, in US District Court, Eastern District of Texas, Texarkana Division Case No. 5:11-cv-00053-JRG. US Patents Nos. 6,233,389, 7,529,465, and 6,792,195.

Verizon / Kellogg Huber — Aug 2011-Jul 2012

Conducted source code analysis, supported testifying expert, and helped draft non-infringement report on behalf of defendant in the area of digital video recorder (DVR) technology, in US District Court, Eastern District of Texas, Marshall Division Case No. 2:09-cv-00257-DF. US Patent Nos. 6,233,389, 7,529,465, and 7,493,015.

Inventor

Professor of Electrical Engineering, University of Notre Dame — 2002-present

Basic and applied research in communication systems, center direction and department administration, and instruction at graduate and undergraduate levels. Numerous highly-cited publications in wireless communications and software-defined radio (SDR) technology. Three US patents granted in the areas of radio-frequency spectrum sensing and millimeter wave communication systems. US Patent Nos. 8,838,520, 10,039,008, and 10,819,405.

Consultant, Caveo Technology — 2001

Development of motion-sensing technology for security applications, leading to one patent. US Patent No. 6,861,946.

Member of the Technical Staff, Lucent Technologies, Bell Laboratories — 1998-1999

Research and development of digital audio broadcasting (DAB) technology, leading to four patents. US Patent Nos. 6,430,724, 6,587,826, 6,662,339, and 6,874,115.