Jerry A. Kaufman

Cell Phone Records, Billing Errors and Usage Expert Witness, Litigation Support and Patent Analysis Services


Cell Phone Records, Billing Errors and Usage

Jerry Kaufman has over 30 years of experience in cellular and mobile communications. During this time, he has developed an in-depth knowledge of and expertise in the analysis of cell phone (cellular and wireless) usage, records*, location, bills, billing, invoices, practices and systems. His work in call, data and message records, bills, and invoices has included teaching, expert witness engagements, technical analyses, patent analysis projects, product development projects, and research reports covering:

*Including Call Detail Records and Charging Data Records (CDR)
  • Call Detail Records and Charging Data Records (CDR)
  • Systems, methods, practices, standards and technologies used to generate, store, and process CDRs and subscriber invoices
  • Call and data event timing: start, end and duration times
  • Triangulation and location determination
    • LoCation Services (LCS) and Positioning methods (/locating methods), systems and technologies
    • Cell site data/Tracking data
    • Cell tower mapping
    • Sender and receiver identity and location
  • Carrier invoices
  • Carrier charges for incomplete, busy and unanswered calls and data events.
  • Differences and inconsistencies in the call and event information found in network call detail records and in a subscriber's bills and invoices.
  • Usage profiles and call and message patterns.
We have been also called upon to:
  • Assess accuracy of Call Detail Records, subscriber invoices and billing systems and practices
  • Differentiate between incomplete and completed calls and data events
  • Determine the actual start, end, and duration times for calls and data events
  • Analyze calling & messaging patterns and behavior
  • Evaluate call, messaging and data event recording, timing and rating (pricing) technologies, systems and methods
  • Determine the actual number of calls and data events
  • Assess accuracy and reliability of the systems, methods, and practices used by carriers to identify completed calls, rate calls and categorize calls.
  • Identify the actual sender and receiver of a call or data event
  • Implement message processing call audits of usage records including call detail records and data events
  • Identify errors caused by defective data, data not generated, data not collected, lost data or data not properly processed.
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 Record, Billing and Usage 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