Digital Switching Expert Witnesses

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Digital switching expert witness candidates typically have extensive experience in electrical engineering, network design, computer science, and/or information technology. In addition to expertise, a digital switching expert witness should feel comfortable explaining forensic evidence and technology to a judge and juror. In high profile cases, or litigation involving a significant financial stake, previous expert witness testimony experience is often a requirement.

Matters that require digital switch technology expertise typically involve intellectual property, such as patent infringement, trade secret misappropriation, or an inter partes review challenge. In a litigation scenario, a technical expert can expect courtroom testimony, as well as other expert witness services such as depositions, expert report preparation, expert opinion, forensic analysis, a prior art search, and related consulting activities.

Cahn Litigation Services has a vast expert network and often receives calls from law firm clients, representing a plaintiff or defendant, to help locate a digital switching expert witness. Whether the case involves telecommunication systems, networking switching or wireless technology, Cahn Litigation Services has the experience required to turn the search for an expert around quickly. At Cahn Litigation Services, sourcing digital switching expert witnesses for patent litigation matters is a particular area of expertise.

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Digital Switching Expert Witness - Sample Bios

Please Note: All Cahn Litigation expert witness searches are customized to attorneys' precise specifications and preferences. Attorneys are encouraged to discuss search parameters with a Cahn search specialist.

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The below expert witness bios represent a small fraction of those Digital Switching experts known by Cahn Litigation Services. These bios are provided to give attorneys a sense of the Digital Switching landscape.


Expert Witness #222600

This expert is a testifying expert, author, patent holder, and Registered Professional Engineer who has many years of experience in Electrical Engineering, Networks and Telecommunications. This expert’s primary areas of expertise include telecommunications, switching systems (circuit, packet and optical), LANS, communication network architecture and protocols, and copper and fiber-optic cabling systems (cables, connectors, patch panels, etc.).

This expert holds 8 U.S. patents, has authored more than 30 technical publications (including 2 books) and has given technical presentations on 5 continents. This expert has provided Trial Testimony, Expert Reports, Depositions, Technical Tutorials, and consulting in more than 20 patent cases in Federal District Court and the ITC, as well as Inter Partes Reviews at the PTAB.

Relevant Professional Experience

  • Member of Technical Staff and Technical Manager -- Customer Switching Systems
    Involved with telecommunications networks, PBX and data switch design, signaling systems, interface with long-haul network. Inventor and lead designer of integrated circuit and packet switching system. Inventor of a message signaling arrangement for ISDN switches and terminals.
  • Technical Manager and Director – Network Cable Systems, Optical Fiber Solutions, and Optical Networking Business Units
    Involved with copper and fiber-optic cabling systems and transmission, optical switching, local area networks (LANs), wide area networks (WANs), network management. Developed a signal message translator to enable logical partitioning of a broadband network router into multiple virtual routers.
  • Telecommunications consulting
    Provided consulting, engineering, and expert witness services on transmission, switching, and networking issues, LANs, and cabling systems.


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Expert Witness #263082

This expert is a Professor and served as the Associate Chair of the Electrical Engineering Department. This expert also served as the Director of a University off-campus graduate program. This expert is also an expert in intellectual property development and a consultant for patent litigation cases in the areas of telecommunications, computer networks, and wireless networks at both the protocol and hardware levels. This expert is internationally known through research, scholarly work, and a published book. This expert has had several invited talks at international conferences.

This expert was a research scientist at a telecommunications institute working on design of advanced communication systems and high-speed computer networks. This expert was with the Computer and Communications Research Center at a University and worked as a research assistant on design and analysis of high-speed switching systems project. This expert was a telecommunications system research & development engineer, participated in design of a high-speed digital telephone Private Branch Exchange" (PBX), and received the best “design/idea” award.

This expert specializes in: Computer Networks/Protocols, TCP/IP, Virtualization, AI in Networking, Cloud Data Centers, Network Security, Internet Applications, Web, VoIP, Video Streaming, Multimedia Signaling/Networking, CDNs, Networking Devices, Switches, Routers, Media Gateways, Virtual Switches, Signaling in Wireless Mobile and Telecommunication Networks, IoT, and Wireless Sensor Networks.

This expert is the author of an internationally recognized textbook. Additionally, this expert has been granted a U.S. Patent that presents a switching system for use in high-speed computer networks.

This expert holds positions with the IEEE Communications Standards Magazine, presenting the latest innovation in computer networks and other aspects of communication systems. This expert has given numerous domestic and international conference regular and invited talks and published many journal articles in communications and networking fields.

This expert has have received several awards, honors and research grants from university, private sectors, state, and governmental funding agencies for conducting research and teaching in the area of telecommunication systems.

This expert’s prior litigation experience includes: analysis of patent claims, prior art research, consulting for counsel on term constructions, technology examination against patent infringement, patent opinion expert report, claim chart preparation, patent invalidity expert report, handling IPR cases, participation in deposition process, and participation in court testimony.


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Expert Witness #256632

This expert is a world-renowned researcher who has extensive research, technical, managerial, and Intellectual Property/patent expertise in the areas of telecommunications, networking, broadband, MetroEthernet, SONET/SDH/OTN Internet, VoIP, wireless, video, multimedia, MPLS, IPv6, e-commerce, and IoT/M2M for both carrier networks and enterprise networks. This expert's specialties include analysis, design, implementation, operation, and advocacy of new network technologies, particularly with an emphasis on packet technologies and the Internet Protocol (IP) for traditional and broadband applications such as:

Voice over IP (VoIP); Video Over IP (e.g., IPTV, specifically, entertainment quality digital TV, video distribution over satellite/DTH, High Throughput Satellites [HTSs], multimedia; wireless connectivity (including Wi-Fi, wireless sensor networks, and communication/DTH/HTS satellites); security; intranet; Internet/intranet architecture and QoS; IoT/M2M; LANs/VLANs/MetroEthernet; and the underlying high-capacity network infrastructure to support these applications along with the call control signaling logic (SS7/Q.931/Q.2931/Q.933) and Advanced Intelligent Network (AIN) services. Packet systems include X.25/NCP, IPv4, Frame Relay (FR), Asynchronous Transfer Mode (ATM), MultiProtocol Label Switching (MPLS), and IPv6. This expert has also done work in cloud services (Cisco UCS) and IoT/M2M, Smart Cities, Smart Buildings, Smart Grid, and e-health.

This expert has many years of hands-on ATM/SONET/MetroEthernet/OTN experience. In addition to numerous papers and conference presentations, this expert has written several books on LANs/VLANs/MetroEthernet, MPLS, Internet Services Cloud services, and IoT/M2M.

This expert has over 200 published patents as well as 35 patent applications cite this expert's work. Additionally, 5000+ academic researchers cite this expert's work in their publications, according to Google Scholar. This expert has taught IT and Telecommunications courses. This expert has appeared in industry conferences as well a radio and TV technology programs.

This expert has been called upon to undertake infringement/non-infringement analysis (with resulting depositions and testimony) in the area of packet video/IPTV, packet voice/VoIP, imaging (scanned checks), IoT, and wireless.


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Expert Witness #231272

This expert is the Founder and Principal of an internationally renown consulting firm specializing in telecommunications, networking, computing and multimedia technologies including digital video and audio standards. The firm provides business management, product management and engineering management services, market intelligence consulting, licensing expertise and litigation support including expert witness services. The company provides its clients with a wide variety of services so they can keep pace with the breakneck changes in their industries. Areas of expertise include:

• Broadband Communications
• Digital Switching
• Internet Infrastructure
• Network Management
• Networking
• Computer Architecture
• Telecommunications & Wireless Product Marketing
• Wireless Technologies
• Multimedia Technologies including MPEG
• VoIP and Related Technologies
• Virtualization and Thin Client Technologies

Early on, much of this expert’s work involved video processing technologies including MPEG-2, MPEG-4 and MPEG-7. This expert was also responsible for IP based technologies, including applications of SIP and RTP. Some of these technologies which relied on TCP/IP or UDP/IP were spun out to a start-up that pursued commercialization of the SIP and RTP technologies. This expert has been involved in numerous cases involving use of the public and private Internets to transmit data. Some providers used the public Internet while others used different technologies including their own IP networks to deliver content (e.g., audio, video, etc.) or peering agreements with Internet service providers, especially when end-to-end quality-of-service (QoS) had to be managed at certain levels.


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