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 100 patent, civil, criminal, anti-trust, and ITC cases, including several successful Inter Parte Reexaminations (IPRs) and numerous 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 8 times and testified in arbitration proceedings and 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. His experience is differentiated based not only the amount of experience but its type, having worked "on-the-inside" of various carriers 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 30+ 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, Google, The Houston Police Department, The Los Angeles District Attorney's Office, Samsung, Sprint, Toyota, Verizon Wireless, 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.
Areas of Expertise:
R. Paul McCauley, Ph.D. assists plaintiff and defense attorneys in police, security, and jail related issues. He is Emeritus Professor of Criminology and former police trainer, security manager and faculty of the National Crime Prevention Institute and the Southern Police Institute. He has qualified in state and/or federal courts in more than thirty states and Canada. Dr. McCauley was an advisor to three national, presidential and congressional crime committees. He was a Fulbright Senior Scholar to Australia--police security interactions. Dr. McCauley is a noted consultant and published author.
Dr. Michael J. Perrotti, Ph.D., a member of the National Academy of Neuropsychology, specializes in Clinical and Forensic Psychology. He has over 30 years of experience with consumers, courts, and counsel including civil, prosecution, defense counsel, family court and the US Government. Dr. Perrotti contributes to the profession as an Expert Consultant for the State of California Board of Psychology, and the California Board of Behavioral Science Examiners and is certified by LA County System Court as an Expert Witness in Neuropsychology, eyewitness ID and false confession. Dr. Perrotti was an Assistant Professor of Psychiatry & Behavioral Science at the Keck School of Medicine, USC (2005-2006), and conducted complex neuropsychological evaluations in USC. Dr. Perrotti possesses specialized training and has clinical and research interns. His practice is an approved internship site at UCLA. He also has expertise in the area of Assessment of Sexual Deviation and Evaluation of Child Sexual Abuse Allegations. His training, experience, and use of the Abel Assessment of Sexual Interest Computerized Test from the Abel Center in Atlanta, Georgia, enables him to add a state-of-the-art sophisticated tool for the evaluation of sexual offending. Dr. Perrotti has served as an expert witness for plaintiff and defense in personal injury and employment and workplace matters. Dr. Perrotti was awarded the Volunteer Services Award from the President's Volunteer Council as Service and Civic Participation, the White House. Dr. Perrotti is a member of the Orange County Sheriff's Reserve, Professional Services Division. Services Include:
- Neuropsycholgical Assessment
- Sanity / Competency to Stand Trial Assessment
- Police Misconduct
- Suggestibility and False Confession
- Crime Scene Investigation in Report Formulation
- Sexual Predator Determination
- Effects of Psychotropic Medications on Confession
- Expert Neuropsychologist in Sexual Assault Trial
- Expert in Bonding Studies and False Confessions
- PTSD (acute and complex) in General, Law Enforcement, and Iraq War Veterans
- Panic Disorders and Phobias
- Custody Evaluation
- Severe Trauma in Children, Adolescents, and Adults
Latent Fingerprint Development Serology Crime Scene Investigation Forensic Science Trajectory Reconstruction Shoeprint Identification Crime Scene Reconstruction Bloodstain Pattern Analysis DNA Analysis Fracture Match Analysis Hair Comparison