Jerry A. Kaufman

GSM Expert Witness, Litigation Support and Patent Analysis Services


(Global System for Mobile communications)

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

  • GSM Network Technologies, Architectures & Standards
    • Network functions, protocols, interfaces, signalling and messages for:
      • Core Network (CN)/Network Subsystem (NSS) network element
      • Radio Access Network (RAN)/Access Network (AN) network elements
      • Authentication, Authorization and Accounting (AAA)
      • Channels: Physical, Logical, Traffic, Control and Transport
      • Handover and handoff
      • Mobility Management
      • Network interconnection and interworking
      • Packet and circuit switching
      • Security
      • Telecom management
      • User, Control and Network planes
    • Air & Radio interfaces, protocols, stacks, modulation, encoding, signalling and messages for:
      • Frequency Division Duplex (FDD)
      • Frequency Division Multiple Access (FDMA)
      • Time Division Multiple Access (TDMA)
    • GSM Terminals & Phones
      • Architecture, functions, Operating Systems/OS, text input, SIM cards, activation, registration, authorization, Graphical User Interfaces (GUI), Web browsers, filters and access control
    • GSM Applications & Services
      • Messaging: Email, SMS, EMS, voice mail, text/instant messaging, ringtones, ringback tones, and answer tones
      • Systems, methods, practices, standards and technologies used to manage, store, generate, send, and receive voice, text, MMS and SMS messages
    • GSM LoCation Services (LCS) and Positioning methods (/locating methods)
    • GSM Billing and Charging Systems including usage information (Charging Data Records - CDR), call event, usage collection, rating, charging, accounting and billing
  • 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
    • GSM 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

© 2018 Jerry A. Kaufman