Patent Expert Witnesses
What is a patent expert witness?
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. Candidates typically have extensive experience as patent law expert witnesses, economic damages, as a patent damages expert witness, and/or as a patent examiner. A patent infringement expert witness can support cases related to the theft of intellectual property, product design, and/or ownership. In a high-profile case or involving a significant financial stake, an attorney may require a patent litigation expert witness with prior trial experience.
What types of cases require a patent expert witness?
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.
Patent expert witness case examples
From semiconductors to software, Cahn Litigation Services has placed patent professionals to provide expert witness services for a wide variety of legal issues, including:
- New York entity consumer product patent infringement case,
- prior art search to challenge patent validity/invalidity,
- claim construction interpretation,
- an economist expert’s opinion of reasonable royalty,
- review of information technology patent applications,
- patent portfolio valuation methodology,
- analysis of semiconductor patents for potential acquisition,
- design patent infringement case involving medical devices,
- patent damages calculations,
- cell phone manufacturer on-going patent dispute litigation, and
- expert witness testimony in Federal Court for a healthcare technology case, among many others.
What litigation support work might a patent expert witness be expected to perform?
Litigation support by a patent infringement expert witness could include research, authoring expert reports, prior art searches, providing expert opinions, 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. 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.
Cahn Litigation Services has the experience required to turn a search for a patent expert witness around quickly, providing the right balance of expertise and testimony experience. 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
Patent Expert Witness - Representative 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.
The below expert witness bios represent a small fraction of those Patent experts known by Cahn Litigation Services. These bios are provided to give lawyers 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- Member of Technical Staff and Technical Manager -- Customer Switching Systems
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 SearchExpert 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 Plaintiff 35 For the Defendant 14 Pre-litigation consulting 14 Expert Reports 39 Laboratory Tests 9 Testimony in Depositions 27 Testimony in court 9 Patent Infringement 45 Patent Re-Examination 5 Breach of contract 5 IP theft 4 Regulatory 5 Wireless 54 Wireline 5 Standards 3Gpp 24 Standards 3Gpp2 17 Standards ITU 2 Standards IEEE 6 Non-litigation 8 Testimony before regulators & boards 3 This expert is very well published and is a frequent presenter at academic and industry conferences.
Start Patent Expert SearchExpert 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 identificationSummary 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 SearchExpert 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 SearchExpert 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 SearchExpert 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 SearchExpert 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 SearchExpert Witness #226416
This USB/signal processing expert holds a PhD and PE and has extensive electrical engineering experience analyzing USB hub architectures, host control logic, and embedded electronic systems in patent litigation. This expert can evaluate patent issues involving multi-host USB hubs, USB bridges between hosts, and automotive head-unit control of USB connectivity.
This expert can assess whether automotive infotainment systems meet technical claim requirements, including issues involving host-to-host bridging, dynamic host switching, and head-unit-controlled USB routing. This expert is also well positioned to evaluate invalidity and obviousness by analyzing prior art USB hub designs, host-role management techniques, switching and routing architectures, and bridge-based communication systems that predate relevant patent claims.
This expert's work aligns patent claim elements, such as USB hub modules, host switching logic, and control pathways, with hardware and firmware behavior and the state of the art at relevant priority dates. This expert's combination of hands-on engineering expertise and patent litigation experience supports clear, technically grounded opinions on non-infringement and invalidity in matters involving complex automotive USB and CarPlay-related systems.
Start Patent Expert SearchExpert Witness #227322
This USB expert has decades of experience as a software developer for a major technology platform and experience using in-vehicle smartphone projection systems across multiple vehicles. This expert is a member of prominent engineering and computing professional associations and has access to standards and ongoing publications.
This expert has extensive testifying experience, including Markman hearings and patent jury trials. This expert has provided over 50 days of deposition testimony, much of it in patent cases, as well as dozens of days of trial testimony.
This expert has served as a testifying expert in a case involving the forerunner of USB, FireWire IEEE 1394. This expert has also served as a testifying expert in patent cases involving network protocols and network routers.
This expert has served as a testifying expert in a patent cross action involving computers and compass mirrors, as well as in a patent jury trial involving vehicle networks. In addition, this expert has worked on patent cases involving signal processing and transmission.
Start Patent Expert SearchExpert Witness #245046
This patent expert is an attorney and CLP with over 50 years of experience in IP litigation, asset management, and technological development.
This expert is an experienced expert witness and litigation consultant who has served as a testifying expert in over 70 patent infringement, licensing, trade secret, and trademark matters. The work has covered issues such as reasonable royalties, infringement, validity, willful infringement, inequitable conduct, standards in licensing, patent malpractice, and fiduciary duties of officers and directors on IP issues.
Start Patent Expert SearchExpert Witness #255939
This IP valuation/damages expert specializes in the economic analysis of intellectual property, has frequently served as an expert witness on significant patent infringement matters, and has testified on patent infringement damages. Most federal district court work relates to patent damages and Georgia-Pacific factors.
In over 30 years as an economic consultant, this expert has worked on projects covering hundreds of companies across numerous high-technology industries, including assisting in the evaluation and negotiation of patent license agreements. This expert has also written and lectured on patent damages and intellectual property valuation.
This expert holds an MA in economics from a major public university and a BA in economics from another public university.
Start Patent Expert SearchExpert Witness #255949
This patent economic damages expert has decades of litigation consulting experience, with expertise in the economics of intellectual property, including the assessment and calculation of economic damages such as reasonable royalties, lost profits, and price erosion in patent infringement matters. This expert also advises on patent cross-licensing negotiations involving complex high-technology products, including patent portfolio valuation and the calculation of appropriate cross-license balancing payments among licensing parties.
This expert has been significantly involved in the assessment of patent infringement damages in numerous patent litigation matters as a consulting, non-testifying expert. This expert has also consulted on litigation risk assessment, patent licenses, and licensing practices.
This expert is an experienced expert witness and litigation consultant who has testified in deposition and at trial in federal court, state court, and arbitration.
Start Patent Expert SearchExpert Witness #255957
This patent damages expert has over 20 years of litigation consulting experience focused on calculating economic damages in intellectual property matters.
This expert has consulted on over 200 projects and has been designated as an expert witness or non-litigation project lead in over 100 matters. Most consulting and expert testimony has involved patent damages, including design patent damages issues that were appealed to the Supreme Court.
Start Patent Expert SearchExpert Witness #280171
This IP economics analysis expert specializes in economic analysis involving intellectual property and antitrust matters, with experience in patent, copyright, trademark, trade secret, merger review, price-fixing, and abuse-of-dominance matters. This expert has particular expertise in China's IP and antitrust matters and has worked extensively on cases before Chinese commerce, development, industry, and market-regulation agencies. This expert has also submitted expert reports and testified in a number of antitrust and IP cases before several Chinese courts.
This expert has extensive experience calculating royalty rates and payments and estimating damages in patent and other IP cases, including matters involving standard essential patents (SEPs). This expert has also studied patent pools, including their administration and royalty rates.
This expert has submitted expert reports and testified multiple times in patent cases before Chinese courts, and has worked on a large number of SEP and non-SEP patent cases in the U.S. in a consulting role. Reviewing patent licensing agreements and analyzing rates and other terms are often part of the work this expert has performed.
Start Patent Expert SearchExpert Witness #282140
This medical device and patent expert earned a B.Sc. in Biomedical Engineering and a J.D., and has worked in medical device patent litigation since graduating from law school, including medical device patent prosecution, drafting and filing patent applications and amendments, and preparing freedom-to-operate opinions.
This expert later held senior patent counsel leadership roles at a spine surgery company focused on spinal implants, instrumentation, and biologics.
Start Patent Expert SearchExpert Witness #282640
This product design expert has been involved in product design and development for over 35 years across a wide variety of products, including audio products, personal care products, home appliances, kitchen accessories, car accessories, sunglasses, home goods, wearable items, and medical devices. This expert has extensive knowledge of product engineering and patent matters, with experience across concept development, industrial design, mechanical design, electrical design, acoustics, manufacturability, and moldability for injection-molded parts.
As a registered US Patent Agent, this expert has worked independently and with outside counsel on patent searches, patent applications, patent prosecution, and patent litigation. This expert is a named inventor on over 60 patents and has provided support in numerous litigations.
Start Patent Expert SearchExpert Witness #282758
This mechanical engineering expert holds a Ph.D. in mechanical engineering, is a licensed Professional Engineer, and has over 40 years of industrial experience in consumer and industrial products, product design and development, numerical simulation, testing, and quality assurance.
Areas of expertise include mechanical design, product development, materials science, and product testing. This expert has extensive experience in consumer product design and development and has served as a technical expert in patent-related matters.
This expert also has extensive experience in patent and products liability litigation, has given deposition testimony over 25 times, including over 20 times in patent matters, has testified before the ITC a number of times, and has testified in several jury trials. In total, this expert has been retained in over 40 patent cases, including over 20 district court matters, and has supported infringement, noninfringement, validity, and invalidity positions. The work often included the development of expert reports.
This expert has also been involved in a number of design patent cases and has been retained in matters involving a wide variety of relatively low-tech products, including mobile-device accessories, beverage containers, handheld razors, cooling products, and cosmetic eyelashes. This expert has also invented consumer products with students in a university product development and innovation course taught as an associate professor of mechanical engineering. Products developed in the course included decorative accessories, candle-safety products, and food-container innovations.
This expert is an experienced expert witness and litigation consultant.
Start Patent Expert SearchExpert Witness #297434
This USPTO standards expert is a patent practitioner with a Bachelor of Science in mechanical engineering and a Juris Doctor, specializing in patent practice, post-issuance proceedings, complex patent prosecution matters, patent litigation strategy, and patent policy, practice, and procedure before the USPTO. This expert is an authority on patent laws, rules, examining practice, and examination procedure, and has provided expert testimony on these subjects.
This expert previously served in senior patent examination policy leadership at the USPTO. During a distinguished federal patent agency career, this expert was involved in nearly all patent-related rulemaking over more than 30 years and provided administrative oversight and direction for petitions, patent legal administration, patent quality assurance, reexamination, and patent examining procedure functions. This expert began as a Patent Examiner, later served in patent legal administration, became an Administrative Patent Judge, and then served in senior patent policy counsel and leadership roles.
This expert has experience as an expert witness and litigation consultant in matters involving inequitable conduct, patent prosecution standards, patent office practice, patent policy, and related patent litigation issues.
Start Patent Expert SearchExpert Witness #2372756
This EV charging and automotive systems expert holds degrees in Electrical Engineering, Electrical and Computer Engineering, and Chemical Engineering, is a lean six-sigma black belt and Licensed Professional Engineer, and has over 40 years of real-world experience designing, testing, and developing electrical systems for automotive applications. This expert is also a patent attorney registered with the USPTO, with extensive experience serving as an expert in IP-related matters, ITC matters, and Inter Partes Review proceedings.
This expert has served as an automotive industry expert in a trade secret theft case involving electric vehicles and hybrid vehicles. This expert is also experienced in EV battery systems and control systems.
This expert has extensive experience in vehicle telematics systems, units, and methods, as well as in writing, developing, and testing automotive products and components. This expert also has experience with related engineering specifications, product acceptance testing, control plans, PPAP, Failure Modes and Effects Analyses (FMEAs), and Design Validation Plans and Reports (DVPRs).
This expert has testified over 95 times and has extensive deposition and trial testimony experience, including testimony in IP and patent litigation cases. This expert has authored numerous reports and declarations for intellectual property and patent matters, analyzed patents and prior art in numerous patent cases involving automotive and vehicle systems and components, conducted hundreds of forensic investigations, and supported at least 50 IPRs, testifying in over 15 of them.
This expert has served as an expert witness in infringement, non-infringement, patent validity, and patent invalidity matters, including issues involving Sections 101, 102, 103, and 112 and prior art arguments. This expert thoroughly understands the issues involved in intellectual property and patent litigation and has drafted numerous reports and declarations addressing infringement and non-infringement, claim construction, validity, and invalidity in IPRs, Federal District Courts, and ITC cases.
Start Patent Expert Search