Dr. Lavian is a mobile wireless expert. He has applied his research and industry expertise into a deep skilled mobile wireless expert witness practice, blending technical knowledge of patent issues, a vast personal invention portfolio, and subject matter expertise.

Mobile wireless devices have taken over the world by storm. There are billions of mobile or fixed devices deployed using wireless technologies to communicate. Having an in-depth understanding of wireless communication standards and protocols, accumulated through industry implementations as well as research in academia is a valuable asset in cases involving mobile wireless standards and applications. Dr. Lavian has both the academic background as well as industry experience to analyze and review the technical aspects of mobile wireless technologies and standards for patent infringement and validity.

In particular Dr. Lavian is an expert on cellular and wireless standards including Wi-Fi, IEEE 802.11 (a/b/g/n/ac), MAC, PHY, OFDM, DSSS, Wireless LAN (WLAN), GSM, UTMS, CDMA, WCDMA, FDMA, TDMA, as well as 3GPP, 3GPP2, WiMAX, 802.16, Bluetooth and LTE, His expertise also covers cellular networks and infrastructure equipment including cell sites, base stations, handsets, mobile devices, and smartphones. He has academic knowledge and hands-on experience designing and implementing solutions consisting of such technologies.

A strong technical background and robust familiarity with patents and patent innovation have made Dr. Lavian uniquely qualified to serve as a mobile wireless expert witness. In serving plaintiffs and defendants alike, his previous contributions have numbered Inter Partes Review (IPR) reports before the Patent Trial and Appeal Board (PTAB), patent infringement expert reports, depositions, and testimonies before both judge and jury.


  • Research, analysis and draft of expert report on wireless technologies, Wi-Fi 802.11 a/b/n and MIMO
  • Inter Partes Review (IPR) report and deposition on patents related to VoIP, cellphone short messages, and chat app
  • Inter Partes Review (IPR) report on patents related to Wi-Fi tethering in broadband cellular data

Dr. Lavian served as a principal investigator for projects at the Defense Advanced Research Projects Agency (DARPA) of the US Department of Defense, including a wireless research project for an undisclosed US federal agency. As a Berkeley industry fellow and Nortel’s Scientist Liaison, he conducted research projects in wireless network systems, cellular systems, 3G GSM and wireless services (ICEBERG) and at Berkeley’s RAD Lab. Moreover, Dr. Lavian has researched and developed the following wireless and mobile communications projects over the course of his career:

Scientific Publications – Mobile Wireless

Scientific publications co-authored by Dr. Lavian on the subject of communication networks:

  • The SAHARA Model for Service Composition Across Multiple Providers Raman B.; Agarwal S.; Chen Y.; Caesar M.; Cui W.; Lai K.; Lavian T.; Machiraju S.; Mao Z. M.; Porter G.; Roscoe T.; Subramanian L.; Suzuki T.; Zhuang S.; Joseph A. D.; Katz Y.H.; Stoica I.; Proceedings of the First International Conference on Pervasive Computing. ACM Pervasive 2002, pp. 1-14

Dr. Lavian provides expert witness services to his clients in the area of mobile wireless technologies.

Select Law Firm Clients (re: Mobile Wireless cases)

  • Finnegan, Henderson, Farabow, Garrett & Dunner
  • Perkins Coie
  • Cooley
  • McGuireWoods
  • McKool Smith
  • Kenyon & Kenyon
  • Foley & Lardner
  • Ropes & Gray

Select Corporate Retainer Clients (re: Mobile Wireless cases)

  • Amazon
  • Apple
  • Huawei and RPX
  • LG
  • T-Mobile
  • Facebook/Instagram
  • Facebook/WhatsApp
  • Ericsson
  • Motorola Mobility