Dr. Tal Lavian is a telecommunications expert with a Ph.D. from UC Berkeley, where he spent nearly 20 years researching, studying, and lecturing. He has filed declarations in more than 90 PTAB proceedings (IPR and CBM). He provides expert reports, claim construction analysis, and deposition and trial testimony in patent cases involving the technologies below.
Technology Areas
- Telecommunications: PSTN, VoIP, signaling protocols, and telecom infrastructure.
- PSTN and VoIP Systems: Circuit switching, SS7 signaling, SONET/SDH, and SIP/RTP VoIP.
- Network Communications: Packet switching, protocol stacks, network interfaces, and quality of service; the specialty of his Ph.D.
- Internet and TCP/IP: TCP/IP, UDP, IPv4/IPv6, DNS, DHCP, ARP, and HTTP.
- Voice over IP: SIP, RTP, and IP telephony systems.
- Routing and Switching: MPLS, BGP, OSPF, and L2/L3 switching architectures; router and switch design at Nortel Networks.
- Computer Networking: LAN and WAN architectures, Ethernet (IEEE 802.3), routers, switches, and gateways.
- Data Communications: Data transmission; IEEE and IETF RFC standards.
- Networking: Enterprise network architectures.
- Network Management: NMS, SNMP, MIB structures, and Operational Support Systems (OSS).
- Network Security: Firewalls, VPN, SSL/TLS, IPsec, and secure multimedia communications.
- Streaming Media: Video and audio streaming, multimedia conferencing, RTP/RTCP.
- Mobile and Wireless: Wi-Fi 802.11, WLAN, wireless access technologies, and mobile devices.
- Messaging and Chat: SMS, MMS, instant messaging, and chat applications.
Testimony and Reports
Dr. Lavian has testified in court cases before judges and juries in U.S. federal and state courts, the Canadian Federal Court, and a court in Malaysia, and has given declarations and testimony in USPTO PTAB proceedings. He has been retained in ITC Section 337 investigations, has given 60+ depositions, and has written expert reports on claim construction, infringement, invalidity, and prior art. He presents technical material in plain terms for technical and lay audiences. Remote deposition and trial testimony are available.
Examples of Matter Subjects
- Web reservation over the Internet covering multiple reservation instances.
- Network management, OSS, SNMP, and device management, including IP-PBX management.
- Telecommunications architecture, PSTN, and VoIP.
- Network protocol for a multimedia application.
- Router switching fabric architecture and Ethernet pseudo-wire VPN.
- MPLS tunneling and IETF RFC standards for MPLS.
- Wi-Fi 802.11 and WLAN, including Wi-Fi 802.11 tethering.
- iPhone, iPad, and other Apple mobile wireless products.
- Short message service (SMS) and chat application patents.
- Firewall and secure multimedia communications.
- Video conference application programs.
Frequently Asked Questions
What does Dr. Lavian provide in a matter?
Expert reports, claim construction analysis, technical tutorials, deposition and trial testimony, prior art investigation, and patent portfolio evaluation in telecommunications and networking matters.
What are Dr. Lavian’s qualifications?
A Ph.D. in Computer Science from UC Berkeley specializing in network communications; nearly 20 years researching, studying, and lecturing at UC Berkeley; 120+ invented patents; 90+ cases, 60+ depositions, and 100+ patents litigated; 25+ scientific publications; over 35 years of experience. He is an IEEE Senior Member.
Which law firms have retained Dr. Lavian?
Over 50 law firms and corporate clients, including Fish & Richardson, Kirkland & Ellis, Gibson Dunn, Skadden, Finnegan, Irell & Manella, Perkins Coie, Morgan Lewis, and Baker Botts. See law firm clients.