Expert testimony services for Routing and Switching Patent Litigation

Dr. Lavian offers expert witness services in patent litigation cases, including expert testimony, expert witness reports and declarations, and patent analysis involving routing, switching, and communication equipment architectures and design. Dr. Lavian provides courtroom presence, clear testimony, and an ability to effectively distill complex concepts into understandable basics and commonsense.

Dr. Lavian has over 30 years of research and hands-on experience in telecommunications, network communications, and Internet technologies. For over ten years, he served as a principal scientist, architect, and senior software engineer at Nortel Networks. He designed software for switches, routers, and network communications equipment and developed systems and architectures for managing them. Similarly, his doctorate in computer science from UC Berkeley focused on network communications.

Routing and switching are a natural fit for Dr. Lavian’s expert witness practice. Analyzing packet switching and routing behaviors is an integral part of network architectures patent litigation cases. There is a need to understand networking principles, communication systems, network communication equipment architecture, routing algorithms, software, and hardware.

He has both the research and development background to deftly analyze and review the technical aspects of routing and switching for patent validity or infringement, and if required, in the broader contexts of network communications systems, and the Internet architecture and protocols.

Dr. Lavian has also served as Principal Investigator for projects at the Defense Advanced Research Projects Agency (DARPA) of the U.S. Department of Defense, including a research project for the U.S. Air Force Research Lab (AFRL) involving routing and switching optical SONET and DWDM high-speed networks. In addition, as an academic and industrial researcher, he has developed systems and architectures for switches, routers, and network management.


Expert Witness Services

As an expert in routing, switching, and network communications equipment architectures, Dr. Lavian offers expert witness services in patent litigation cases, including:

  • Expert testimony in United States District Courts, United States Patent and Trademark Office (USPTO), International Trade Commission (ITC), and other courts across the United States and Canada.
  • Testimony before USPTO PTAB, including Inter partes review (IPR), Covered Business Method (CBM), Post Grant Review (PGR), Ex-Parte Re-Examination, and PTO Interference.
  • Testimony at depositions, oral hearings, and trials.
  • Technology education for claim constructions and Markman hearings.
  • Expert reports and declarations, including infringement analysis, validity analysis, claim terms constructions, and interpretations.
  • Articulation of technical material for both technical and non-technical audiences.
  • Product and technology analysis related to patent portfolios, claim charts, prior art investigation, and patentability research.

Routing and Switching – Past Expert Witness Cases:

  • Network communications, routing, and switching techniques (Prior art research, investigation, and claim charts).
  • Multi-protocol telecom routing optimization (Claim Construction declarations).
  • Router switching fabric architecture and Ethernet pseudo-wire VPN (IPR, depositions).
  • Patents governing multiprotocol label switching (MPLS) technology (Analysis, claim terms, and Markman claim construction declarations).
  • MPLS Routing, Packet Switching, Queuing (Claim Construction declarations).
  • Internet protocols, routing, and switching (IPRs, CBMs, claim constructions, expert reports, depositions).
  • Patents related to Web services and Internet technologies. Internet protocols, routing and switching (IPRs, CBMs, depositions).
  • Routing switching, network communications, TCP/IP technologies (prior art research and investigations, invalidity claim charts).

Selected Publications – Routing and Switching

Scientific publications co-authored by Dr. Lavian on the subject of routing and switching:

Selected Law Firm Clients (Routing and switching cases)

  • Durie Tangri
  • Skadden, Arps, Slate, Meagher & Flom
  • Cooley
  • Kirkland & Ellis
  • Irell & Manella
  • Faegre Baker Daniels
  • Keker & Van Nest
  • Finnegan, Henderson, Farabow, Garrett & Dunner

Selected Corporate Clients (Routing and switching cases)

  • Huawei
  • Cisco Systems
  • Hewlett-Packard
  • Juniper Networks
  • Palo Alto Networks
  • Comcast
  • Morgan Stanley (Cisco Routers in NYSE)