Jerry A. Kaufman

Cell Phone Expert Witness, Litigation Support and Patent Analysis Services


Mobile Phones, Cell Phones and Smartphones

Jerry Kaufman has over 30 years of experience in mobile communications. During this time, he has developed an in-depth knowledge of and expertise in cell phone technologies, systems, standards, markets and industries. His work in mobile phones has included teaching, expert witness engagements, technical analyses, patent analysis projects, product development projects, and research reports covering:

  • 2G, 3G and 4G cell phones, feature phones, smartphones, iPhones & Android mobile phones
  • Cell phone architecture, functions, Operating Systems/OS, Graphical User Interfaces (GUI), text input, SIM cards, USIM cards, UICC smart card, activation, registration, authorization, Web browsers, filters and access control
  • Mobile Phone Network Technologies, Architectures, & Standards
    • Including functions, protocols, interfaces, signalling and messages for: 3GPP, GPRS & EDGE, GSM, GSM MAP, HSPA (HSDPA, HSUPA & HSPA+), LTE, OFDM, OFDMA, UMTS, WCDMA, 3GPP2, 1xRTT, CDMA, CDMA2000, EV-DO, IS-95, IMT-Advanced,  IMT-2000, FDMA, TDMA, TDD, FDD, IS-41C & WIN, IS-54 & IS-136
  • Cell Phone Radio Signaling (modulation and encoding)
    • Analog (Amplitude, Frequency and Phase); Digital Amplitude (ASK), Frequency (FSK), and Phase (PSK)
  • European Telecommunications Standards Institute (ETSI), Third Generation Partnership Project (3GPP) and Third Generation Partnership Project 2 (3GPP2) standards
  • Mobile phone Billing and Charging Systems including usage information (Charging/Call Data Records - CDR), usage collection, rating, charging, call event, accounting and billing
  • Cell Phone triangulation and location determination
    • LoCation Services (LCS) and Positioning methods (/locating methods) and technologies
    • Cell Phone tracking data/cell site data
    • Sender and receiver identity and location
  • Mobile Phone and Smart Phone Applications & Services
    • Messaging: Email, text/instant messaging, SMS, EMS, MMS, voice mail, picture/video messages, ringtones, answer tones, and ringback tones
    • Systems, methods, practices, standards and technologies used to manage, store, generate, send, and receive voice, text, MMS and SMS messages
  • Cell Phone and Smartphone Spectrum Use, Management and Availability
Expert Witness, Litigation Support and Patent Analysis services include:
  • Expert testimony, reports and depositions
    • Testifying with exhibits and preparation of the attorney's material, questions and cross examination
    • Reviewing opposing expert reports, testimony and depositions
    • Assisting in the review, interpretation and understanding of relevant evidence, information and its accuracy
    • Industry, business and technology tutoring and counseling for attorneys and courts
    • Determining the facts of a matter and suggesting case strategy
    • Evaluation of pretrial discovery
    • Preparation of questions in technical matters for depositions
    • Discovery investigation and consulting for interrogatories, depositions and trial
    • Articulating the underlying technologies, systems, processes, methods and their accuracies and limitations
  • Cell Phone patent analysis & research
    • Patent claims, validity, invalidity, infringement, and non-infringement analysis:
      • Technical review and analysis of patent claims, preparation of claims charts and validity and infringement opinions
      • Defend and counter claims of infringement
      • Identify infringing patents and products
      • Identify infringing technical standards and the systems that incorporate these standards
    • Business, market, and industry value analysis for input into valuation, damages, and royalty base computation
      • Entire market value rule (EMVR) analysis
      • Product value apportionment analysis
      • Analysis of the Smallest Salable Patent Practicing Unit (SSPPU) and the value of the incremental benefit

Please refer to Mr. Kaufman's biography for additional information on his background and capabilities.

For a confidential review of your requirements, please contact Jerry Kaufman at 770-212-9204 or via e-mail at

© 2019 Jerry A. Kaufman