Streaming media expert
Dr. Lavian, a telecommunications expert witness and internet expert witness, offers technical consulting services in streaming media, audio and video conferencing, SIP, RTP, and unified communications. Dr. Lavian’s academic background and practical industry experience cover network communications, multimedia, streaming, and audio/video conferencing. Moreover, He has experience in relationships between Internet Protocols (TCP/IP), streaming applications, protocols, and services, and their underlying communications service architectures, designs, and implementations.
Dr. Lavian’s work with streaming protocols, audio/video conferencing, and streaming technologies, primarily implemented through the TCP/IP protocol suite, covers the application, transport, network, data link, and physical layers.
Streaming Media Technologies
Dr. Lavian works with the Internet protocol suite (TCP/IP) and networking and communications technologies, including:
- Multimedia, audio, and video streaming.
- Video/audio conferencing, streaming media, and music streaming over TCP/IP protocol stack using standard Internet protocols such as TCP, UDP, IP, HTTP, HTML, and Web services.
- Integration of streaming media with SIP, Internet protocols (TCP/IP), and streaming systems as the backbone of unified communicants.
- Integration of such protocols and services with short message technologies, including text messaging, SMS, MMS, Instant Messaging (IM), and chat applications. Streaming media shares underlying VoIP protocols such as SIP and RTP.
- Implementing such technologies over handsets, mobile devices, smartphones, cellular networks, wireless technologies, architectures, standards, systems, and backend infrastructure.
- Streaming protocols, SIP, RTP, H.323, MGCP, and codecs.
- Bandwidth, Quality of Service (QoS) related to conferencing and media streaming.
Background
Dr. Lavian holds a Ph.D. in Computer Science from UC Berkeley, specializing in network communications, and spent nearly 20 years researching, studying, and lecturing at UC Berkeley. He served as Principal Scientist and Principal Architect at Nortel Networks (1996–2007) and as a DARPA Principal Investigator on multimedia network research projects. Dr. Lavian has over 120 patents including innovations in real-time media delivery and network streaming, over 25 scientific publications, and has been retained in over 70 cases, including 80+ depositions, before U.S. federal courts, PTAB, ITC, and international tribunals.
Streaming Protocols: H.323, SIP & RTP
Dr. Lavian’s expertise covers the principal streaming and conferencing protocols. H.323 is an ITU standard for audio/video conferencing whose architecture includes gatekeepers, media gateways, and endpoints. SIP (Session Initiation Protocol), developed by the IETF, is an HTTP-based signaling protocol that manages interactive sessions for voice, video, chat, and instant messaging. SIP supports challenge-based authentication, end-to-end encryption via S/MIME, and is transport-independent.
RTP (Real-Time Transport Protocol) and RTCP (RTP Control Protocol) handle the media layer. RTP provides end-to-end transport for real-time audio and video over UDP, while RTCP provides feedback on transmission quality. Dr. Lavian analyzes these protocols at the specification level for patent claim construction, infringement, and validity assessments.
Protocol Expertise in Security & Transport
Dr. Lavian’s streaming media expertise extends to SIP authentication mechanisms, SIP proxy server architectures, codec negotiation (H.264, H.265, VP9, AV1), adaptive bitrate streaming (HLS, DASH), content delivery network (CDN) architectures, and WebRTC browser-based communications. This protocol-level knowledge is applied in patent disputes involving real-time media delivery, conferencing systems, and unified communications platforms.
Frequently Asked Questions
What streaming media technologies is Dr. Lavian expert in?
Dr. Lavian is expert in adaptive bitrate streaming (ABR), RTMP, HLS, DASH, RTP/RTCP, video conferencing protocols (WebRTC, H.264/H.265), quality of service (QoS) for media delivery, and content delivery network (CDN) architectures.
Has Dr. Lavian handled streaming media patent cases involving major technology companies?
Yes. Dr. Lavian has consulted in cases involving streaming media companies including Netflix, DirectTV, Emblaze, and others in federal court and ITC proceedings.
Can Dr. Lavian explain complex streaming technology to judges and juries?
Yes. Dr. Lavian has presented streaming media concepts to federal court judges, juries, and technical PTAB panels in over 70 cases and 80+ depositions.
What types of streaming media patent disputes has Dr. Lavian handled?
Dr. Lavian has handled patent disputes involving adaptive bitrate streaming algorithms, video codec implementations (H.264, H.265, VP9, AV1), content delivery network architectures, real-time streaming protocols, video conferencing systems, and media transcoding technologies.
How does streaming media expertise apply to patent infringement analysis?
Streaming media patents often involve complex protocol interactions between servers, CDN edge nodes, and client devices. Dr. Lavian’s expertise in RTP/RTCP, HLS/DASH manifest handling, codec negotiation, and QoS mechanisms enables him to provide detailed claim construction and infringement analyses for streaming technology patents.
What is Dr. Lavian’s background in multimedia communications?
Dr. Lavian holds a Ph.D. from UC Berkeley, specializing in telecommunications, network communication, and Internet technologies. His 120+ patents include innovations in real-time media delivery and network streaming, and he has served as a principal investigator on DARPA-funded multimedia network research projects.
For inquiries, contact Dr. Lavian at +1 (408) 209-9112 or via the contact page.