Patent Expert Witnesses

Start Patent Expert Search

Patent expert witness candidates typically have extensive experience in patent law, economic damages, and/or as a patent examiner. Depending on the specifics of the case, subject matter experts in software, mechanical engineering, or electrical engineering may be called upon to address technical issues. In a high-profile case, or litigation involving a significant financial stake, a patent attorney may require a testifying expert with prior trial experience. An expert witness must be able to explain technology and complex situations to a judge and jury, as well as be able to withstand the scrutiny of a cross-examination.

An intellectual property protection program stops others from using an owner’s intellectual property (e.g., trademark infringement, trade secret, trade dress, patent protection, copyright infringement) without a licensing agreement. A U.S. patent, issued by the U.S. Patent & Trademark Office (USPTO), provides the right to exclude others from making, using, or selling an invention for a period of years, in exchange for publishing an enabling public disclosure of the invention.

Litigation support by a patent infringement expert witness could include research, an expert report, prior art searches, expert opinion, claim chart preparation, and expert testimony in court. An economic damages expert is often called on to opine on lost profits and damages analysis occurring from patent infringement. From semiconductors to software, Cahn Litigation Services has placed patent professionals to provide expert witness services for a wide variety of legal issues, including:

The firm is skilled and experienced at identifying expert candidates to provide support for all types of intellectual property matters, and is frequently called upon by law firm clients to locate high quality intellectual property experts.

Related Disciplines

Related Disciplines

Patent Expert Witness - Sample Bios

Please Note: All Cahn Litigation expert witness searches are customized to attorneys' precise specifications and preferences. Attorneys are encouraged to discuss search parameters with a Cahn search specialist.

Start Custom Search

The below expert witness bios represent a small fraction of those Patent experts known by Cahn Litigation Services. These bios are provided to give attorneys a sense of the Patent landscape.


Expert Witness #222600

This expert is a testifying expert, author, patent holder, and Registered Professional Engineer who has many years of experience in Electrical Engineering, Networks and Telecommunications. This expert’s primary areas of expertise include telecommunications, switching systems (circuit, packet and optical), LANS, communication network architecture and protocols, and copper and fiber-optic cabling systems (cables, connectors, patch panels, etc.).

This expert holds 8 U.S. patents, has authored more than 30 technical publications (including 2 books) and has given technical presentations on 5 continents. This expert has provided Trial Testimony, Expert Reports, Depositions, Technical Tutorials, and consulting in more than 20 patent cases in Federal District Court and the ITC, as well as Inter Partes Reviews at the PTAB.

Relevant Professional Experience

  • Member of Technical Staff and Technical Manager -- Customer Switching Systems
    Involved with telecommunications networks, PBX and data switch design, signaling systems, interface with long-haul network. Inventor and lead designer of integrated circuit and packet switching system. Inventor of a message signaling arrangement for ISDN switches and terminals.
  • Technical Manager and Director – Network Cable Systems, Optical Fiber Solutions, and Optical Networking Business Units
    Involved with copper and fiber-optic cabling systems and transmission, optical switching, local area networks (LANs), wide area networks (WANs), network management. Developed a signal message translator to enable logical partitioning of a broadband network router into multiple virtual routers.
  • Telecommunications consulting
    Provided consulting, engineering, and expert witness services on transmission, switching, and networking issues, LANs, and cabling systems.


Start Patent Expert Search


Expert Witness #259324

This expert is a Professor of Computer Science & Engineering, and is internationally known in Human Computer Interaction for contributions to software tools that make new forms of interaction more broadly accessible. This expert's broad research interests are in Human-Computer Interaction, User Interface Software and Technology, and Ubiquitous Computing. This expert's specific research is often motivated by challenges at the intersection of technology and design, developing new tools that empower individuals in important domains like health.

This expert's research includes novel applications of low-cost and unobtrusive personal sensing, novel applications of non-expert machine learning, and tools for runtime modification of graphical interfaces. This expert's work on non-expert interaction with machine learning considered domains such as activity recognition, image search, social network friend groups, and gesture recognition. These helped define new approaches to everyday interaction with big data and new approaches to machine learning in software developer tools. This work on runtime interpretation and modification of interfaces helps unlock interaction, enabling new approaches to deploying interaction techniques in the current technology ecosystem.


Start Patent Expert Search


Expert Witness #212711

This expert has been in the telecom world for many years. This expert is globally known for expertise in telecommunications, satellite, cellular and wireless networks (data and voice). A proven authority, this expert's years of work in the field of wireless communication and satellite systems, includes working with the US government, teaching as a Professor and co-Founder and former SVP/CTO of an international carrier with coverage in Europe.

As an expert witness this expert has supported both plaintiffs and defendants in over 60 high profile patent infringement, breach of contract, theft of IP and other cases.

Intellectual Property litigation, hearings and arbitrations

For the Plaintiff35
For the Defendant14
Pre-litigation consulting14
Expert Reports39
Laboratory Tests9
Testimony in Depositions27
Testimony in court9
Patent Infringement45
Patent Re-Examination5
Breach of contract5
IP theft4
Regulatory5
Wireless54
Wireline5
Standards 3Gpp24
Standards 3Gpp217
Standards ITU2
Standards IEEE6
Non-litigation8
Testimony before regulators & boards3

This expert is very well published and is a frequent presenter at academic and industry conferences.


Start Patent Expert Search


Expert Witness #234887

This expert is a consultant and patent owner with many years of experience in developing and supporting the development and commercial exploitation of new technologies in the areas including audio and video encoding, decoding, recording, storage, transmission, and presentation, consumer electronics, digital television, broadcast, mobile, and fiber telecommunications, and computer and storage networks. This expert is specifically experienced in speech processing technologies and details of recognition and insertion of service signals in video programs.

This expert has supported numerous licensing negotiations and reexaminations/IPRs as well as over 50 patent-related District Court and ITC cases, in consultative preparation of cases, characterization of accused products (by testing, reverse engineering, source code review, etc.), preparation of declarations and reports, and, as needed, testifying.

This expert is a Member of the Audio Engineering Society and an Observer Member of the Advanced Television Systems Committee (ATSC).

Summary of Selected Professional Experience

-  Development of techniques for bandwidth reduction encoding and decoding of audio and video content (patent granted on video technique)
-  Consulted on interactive multimedia systems with automated insretion of text over bvideo
-  Consulted on adaptive variable rate coding for speech and general audio and on automatic audio content identification

Summary of Selected Related Case Experience

-  Patent litigation - issues included recognizing and tagging media content
-  Patent litigation - issues included audio and video data encoding, decoding and bit-rate reduction in digital television receivers
-  Issues included audio encoding and decoding, and recognition and insertion of service signals for digital television
-  Patent litigation - audio encoding and decoding, and content-descriptive metadata generation, extraction, analysis and insertion in digital television

Start Patent Expert Search


Expert Witness #219482

This expert is a noted technologist, product developer, consultant, patent analyst, educator and expert witness specializing in mobile, cellular, wireless technologies (2G, 2.5G, 3G and 4G/LTE), GPS technologies, wired technologies, networks, phones, standards, services and systems. This expert has many years of experience in the field of electrical, RF and telecommunications engineering, has worked for private organizations, and founded several successful start-up telecommunications companies.

As a patent analyst, this expert has assisted many leading law firms in defending against or asserting claims of patent infringement and patent validity. This patent work has encompassed Wi-Fi/WLAN standards, Bluetooth standards, DSL standards, all generations of standards for GSM, UMTS, LTE, and CDMA2000 cellular standards, including GSM/3GPP, ETSI, OMA,WAP, CT-2 / DECT / COMS. This expert has given depositions and has extensive testifying experience.

This expert has worked on several patent cases (validity & infringement) concerned with portable communications devices, power consumption and power adjustment.

This expert holds over 35 US and International Patents in the telecommunications field. This expert’s professional activities and services have focused exclusively on mobile, cellular, GPS, wireless and wired technologies, forensics, electronic discovery, markets, standards, spectrum, regulations, networks and services. This expert has taught seminars on mobile, cellular and fixed wireless technologies and has served as a plaintiff and defendant expert witness on a wide spectrum of civil, criminal and business matters/litigation involving wired and wireless technologies, electronic discovery, communications products and services.


Start Patent Expert Search


Expert Witness #266760

This expert specializes in switchgear and power distribution equipment, and electrical failures. This expert served as development manager for bridging projects between Wireline, Coiled Tubing (Anaconda), Zonal Isolation, Cementing and Fracturing. As a senior engineer, this expert was responsible for filing disclosures and patents on the new technologies developed. This expert served on the patent board, reporting to the Director of Technology, in reviewing, editing, recommending further development work, or advocating and prioritizing disclosures for patent filing. On one patent litigation effort, this expert operated as the technology expert for in-house counsel and an outside legal team on technology issues associated with the patent claims, competitor’s intellectual property, and patent litigation. This expert is an active member of the IEEE, the International Association of Direction Drillers, and the Society of Petroleum Engineering. This expert is an inventor or co-inventor on 20 U.S. patents, including 16 patents related to the oilfield services industry. This expert holds a BS in electrical engineering.


Start Patent Expert Search


Expert Witness #245383

This expert is a PhD candidate and research/teaching assistant working under one of the top wireless communications/telephony experts in the country. This expert has worked extensively as a technical engineer for IP litigation. This expert's areas of specialization include:

-  4G/LTE
-  Packet-Network
-  Telephony
-  Wireless Communication
-  Wireless Sensors
-  Telepresence Software
-  Mobile Hardware and Software

Start Patent Expert Search


Expert Witness #209091

This expert holds a BS in Computer Science and is an eBusiness Director and Technology Consultant specializing in Telecommunications, eCommerce, and search technology. This expert brings many years of experience in a diverse set of technologies including Natural Language processing, High Level Language coding, machine translation, Search and query keyword relationships, Command and Query language translation.

This expert has been a testifying expert for over 24 cases including testimony for Telecommunications, Voice Recognition, Query and Search Engine, providing expert reports for patent litigation, IPRs, deposition and trial testimony. This includes testifying in a Multilingual transaction patent suit in where the judge found for the client and cited this expert on all points of contention in the case.

Summary of Professional Experience:

Designed and developed Contact Center system for that included Multilingual and Natural Language speech recognition, parsing the command request and provide appropriate prompts based on both translated prompt lookup and machine language translation.

Developed Search Engine techniques, media library for commercial website search

Developed High volume content publishing. Provided multi-lingual content library including search, indexing, and taxonomy processing for dialect standardization.

Designed and Implemented Call Center systems that use Voice Recognition for automated client response that supported multi-lingual input and output. Developed advance indexing, and query parsing for customer directory search engine.

eMarketing consulting for Commercial websites, search engine, pay per click, multilingual ad campaigns, and Adwords metrics verification.


Start Patent Expert Search