Telecommunications Expert Witness David Williams

David H. Williams is an internationally-known expert in the Wireless / Mobile Location field and President and Founder of E911-LBS Consulting.

Litigation Support - Mr. Williams provides the highest quality and most impactful expert witness services related to wireless location, across the full range of IP / Patent, criminal, and civil case dimensions from the most technical to those regarding business methods. His services include forensic analysis, reports, and testimony on the validity and accuracy of various types of cell phone/sensor location surveillance devices and associated tracking using GPS, Call Detail Records(CDRs), Cellebrite data extraction, and other location data sources. He is an expert in determining how social media and other mobile application usage can play a key part in various cases.

Mr. Williams has successfully provided expert witness services in over 150 patent, civil, criminal, anti-trust, and ITC cases, including several successful Inter Parte Reexaminations (IPRs), and over 40 civil, criminal, and law enforcement administrative proceedings. His credentials in wireless location prior art go as far back as the early 1980s. He has been deposed 24 times and testified 8 times, including winning in the International Trade Commission (ITC) Court as well as in the Eastern District of Texas, winning both IPR and infringement cases. His work with both prosecution and defendants have resulted in numerous key wins/favorable outcomes, with over a dozen wins (against only a few losses) as well advantageous settlements/pleadings. His experience is differentiated based not only the amount of experience but its type, having worked "on-the-inside" of various carriers, infrastructure providers, and location-service application developers. This enables knowing the right questions to ask of such providers, and to "break through the wall" that such providers often put up in litigation.

The basis of Mr. Williams' expertise is his 35+ years in mobile/wireless communications and information technology solutions design, implementation and ongoing management, Mr. Williams has extensive experience in the activities and issues needed to get mobile location applications to market, including design at the application, system, interface / integration, network, IT, operational and customer facing levels. Mr. Williams has extensive expertise in all aspects of LBS delivery across the mobile location ecosystem including enabling network communications, location technologies / sensors, map data, geospatial platform / GIS, GPS and other location chipsets, location data management, and device, infrastructure, and integration providers. David Williams has developed and implemented industry-leading product and technology strategies and solutions for numerous LBS applications and markets and provides consulting and research services to some of the leading carriers and enterprises in the U.S., Asia, and Europe. His client list includes Apple, AT&T, FedEx, GE, GM, GMG, Google, The Houston Police Department, The Los Angeles District Attorney's Office, Lyft, Overhead Door, Qualcomm, Samsung, Sprint, Toyota, Verizon Wireless, Zillow, and numerous medium, small, and startup companies, plus numerous law firms of all sizes. He also provides support to various State Public Defenders Offices on a partial pro-bono basis. 

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