Data Communications Technology Expert — Data Networks, Cloud & Protocol Stacks
Dr. Lavian is a data communications technology expert specializing in data communications, telecommunications, and internet protocols. He has worked with data networks, computer networks, and networking standards such as IEEE and IETF RFCs.
With a background in academia and industry, Dr. Lavian has worked across network communications, computer networks, data communications, and wireless applications. He has designed and implemented communication services in these fields.
Dr. Lavian provides data communications technical consulting.
His work spans both the physical and logical layers of data communication systems — from Ethernet frame structures and data link control protocols to application-layer data exchange mechanisms used in modern cloud and enterprise environments. Dr. Lavian has analyzed how data flows across network boundaries, how protocol stacks interact, and how specific implementations relate to patent claims in litigation.
Background
Dr. Lavian holds a Ph.D. in Computer Science from UC Berkeley, specializing in network communications. He spent nearly 20 years researching, studying, and lecturing at UC Berkeley. His data communications expertise covers LAN/WAN technologies, internet protocols (TCP/IP), Ethernet, Wi-Fi, cellular networks, and the protocols and standards that govern data transmission between devices.
He has testified in cases involving data communications technologies before U.S. federal district courts, the USPTO PTAB, the ITC, and international tribunals. He is an inventor of over 120 patents and has co-authored over 25 scientific publications.
Data Communications Technologies in Patent Litigation
Patent disputes frequently involve foundational data communications technologies. Dr. Lavian has analyzed claims related to a broad range of these technologies in litigation, drawing on his academic background at UC Berkeley and his industry experience designing and implementing data communication systems.
LAN & WAN Architectures
Local area network (LAN) and wide area network (WAN) architectures form the backbone of enterprise and carrier data communications. Patent claims in this area often involve network topology designs, campus and branch network interconnection methods, MPLS label-switched paths, SD-WAN overlay architectures, and virtual private network tunneling. Dr. Lavian has evaluated how specific LAN/WAN implementations operate at the data link and network layers, and how accused products or methods map to the claim elements in dispute.
TCP/IP Data Transport
The TCP/IP protocol suite governs how data is packaged, addressed, routed, and delivered across internet and private networks. Patent litigation in this area can involve TCP congestion control algorithms, IP packet fragmentation and reassembly, socket-level data handling, Quality of Service (QoS) mechanisms, and transport-layer security. Dr. Lavian has analyzed TCP/IP implementations in patent cases, examining how specific protocol behaviors relate to the claims at issue.
Ethernet Standards (IEEE 802.3)
Ethernet, defined by the IEEE 802.3 family of standards, is the dominant wired data communications technology in enterprise and data center environments. Patent disputes may involve Ethernet frame formats, MAC address handling, auto-negotiation, Power over Ethernet (PoE), and high-speed variants such as 10GbE, 25GbE, 40GbE, and 100GbE. Dr. Lavian’s familiarity with IEEE standards and their implementation in networking hardware allows him to assess how specific Ethernet-related patent claims apply to accused products.
Data Link Protocols
Data link layer protocols manage how data frames are transmitted between directly connected nodes. This layer includes protocols for error detection, flow control, and media access control. In patent cases, Dr. Lavian has examined technologies such as VLANs (IEEE 802.1Q), spanning tree protocols (STP/RSTP), link aggregation (LACP), and point-to-point protocols used in WAN links. Understanding how these protocols operate at the frame level is often central to claim construction and infringement analysis.
Packet Switching vs. Circuit Switching
The distinction between packet-switched and circuit-switched networks is relevant in many telecommunications and data communications patent disputes. Packet switching — where data is divided into packets that are independently routed — underpins modern IP networks, while circuit switching reserves a dedicated communication path for the duration of a session. Some patents involve hybrid approaches or the transition from circuit-switched to packet-switched architectures, particularly in VoIP and mobile network contexts. Dr. Lavian has analyzed claims involving both paradigms.
Cloud Data Center Networking
Modern cloud data centers rely on data communications architectures such as leaf-spine topologies, overlay networks (VXLAN, NVGRE), east-west traffic optimization, and software-defined networking (SDN) control planes. Patent litigation involving cloud infrastructure frequently raises questions about how data is forwarded between virtual machines, how network policies are enforced in multi-tenant environments, and how storage and compute traffic is managed at scale. Dr. Lavian has been retained in cases involving cloud platforms operated by major technology companies and has analyzed data center networking implementations in those disputes.
Frequently Asked Questions
What data communications areas has Dr. Lavian addressed in patent litigation?
Dr. Lavian has addressed cloud computing architectures, data center networking, enterprise communication systems, storage area networks (SANs), communication protocol stacks, and high-performance computing interconnects in patent litigation.
Does Dr. Lavian have experience in cloud computing patent cases?
Yes. Dr. Lavian has been retained in patent cases involving cloud computing and data communications technologies at companies including Amazon, Google, Microsoft, ServiceNow, and other major cloud and enterprise technology providers.
What communication protocol expertise does Dr. Lavian offer for data communications patents?
Dr. Lavian provides expert analysis on OSI model protocol layers, TCP/IP data communications, Ethernet frame processing, data serialization protocols, API communication patterns, and application-layer data exchange mechanisms in patent disputes.
How does Dr. Lavian qualify as a data communications expert?
Dr. Lavian holds a Ph.D. in Computer Science from UC Berkeley with research focused on data communications architectures. He has 120+ patents in networking and communications technologies and has testified in 70+ cases at federal courts, PTAB, and the ITC.
What types of data center patent disputes has Dr. Lavian handled?
Dr. Lavian has handled patent disputes involving data center switch fabric architectures, server virtualization, load balancing systems, storage area network protocols, east-west traffic optimization, and cloud infrastructure orchestration platforms.
Can Dr. Lavian testify on enterprise software and API communication patents?
Yes. Dr. Lavian’s expertise extends to enterprise software architectures, RESTful API communications, microservices patterns, message queuing systems, and data serialization protocols — all common subjects in modern data communications patent litigation.
What is a data communications expert and when is one needed?
A data communications expert is a specialist in data transmission technologies, networking protocols, and communication system architectures who provides analysis and testimony in legal proceedings. One is needed in patent disputes involving data networking equipment, cloud computing infrastructure, data center technologies, protocol implementations, and enterprise communication systems.
How does a data communications expert differ from a networking expert?
While both fields overlap, a data communications expert focuses specifically on data transmission methods, protocol stacks, data encoding/decoding, and end-to-end data delivery mechanisms. A networking expert has broader scope including network hardware and topology. Dr. Lavian covers both areas with 120+ patents spanning data communications protocols and computer networking technologies.
For inquiries, contact Dr. Lavian at +1 (408) 209-9112 or via the contact page.