Vident Partners provides vetted semiconductor expert witnesses for cases involving chip patents, trade secrets, export controls, fabrication disputes, yield failures and foundry and supply agreements. Request a referral today.
Find a Semiconductors Expert →Overview
A semiconductor expert decides how a chip or a manufacturing process actually works, and whether what one party says it invented, owned, delivered or shipped matches the physical and technical record. The field combines design, materials, process control and very high-value intellectual property, so the opinion usually needs someone who has worked at the transistor or process level. This page covers chip design, fabrication and related technology. Valuing a patent belongs to an IP damages expert, general electronics to an electrical engineer and software on the chip to a software engineer.
The expert reads design files, process recipes, device cross sections, electrical test data, failure analysis reports, yield records, foundry and supply agreements, and lab notebooks. Reverse engineering a competitor's chip is common in these cases. The method has to be documented so that the other side can test it.
Chip patent fights often run in two forums at once. A federal court can award damages, and the International Trade Commission offers a different remedy. The ITC says its Section 337 investigations most often involve claims regarding intellectual property rights, including patent infringement by imported goods 1. The primary remedy is an exclusion order directing Customs to stop infringing imports, and the Commission may also issue cease and desist orders 1. Since chips are made abroad and imported inside finished goods, this path is especially useful to a patent owner, and its speed shapes how experts must work.
An infringement opinion in this field usually rests on physical evidence. The expert images and measures the accused device, then maps each claim element onto what was found. Invalidity opinions turn to prior art and to what a skilled person would have understood at the time. Claim terms that seem simple, such as a layer or a region, can decide a case, so the expert should work closely with counsel on the court's claim construction.
Process know-how is often protected as a secret and not by patent. Under the Defend Trade Secrets Act, an owner of a trade secret that is misappropriated may bring a civil action if the secret relates to a product or service used in interstate or foreign commerce 2. The court may, in extraordinary circumstances, order seizure of property to prevent dissemination 2.
The expert's first job is to help define the secret with enough precision. A recipe's general steps may be public, while its exact temperatures, gases, times and sequence may not be. Then come the comparisons: does the defendant's process match, and could it have been developed independently in that time? Download logs, file names and lab records often tell the story, so a forensic examiner usually works alongside the process expert.
Chip technology now sits inside national security rules. In October 2022, the Commerce Department announced controls to restrict China's ability to obtain advanced computing chips, develop and maintain supercomputers and manufacture advanced semiconductors 3. The current text at 15 CFR 744.23 says that a person may not export, reexport or transfer an item subject to the rules, without a license, when the person has knowledge the item is destined for a listed end use, including advanced-node integrated circuit production and supercomputers 4. These rules have changed several times, so an expert must read the text for the shipment date.
A technical expert may be asked what a chip or tool actually does, whether it falls within a controlled category, and what a seller could have known about its end use. Whether a violation occurred is a legal question.
Foundry and supply contracts often produce fights over yield and quality. Was the low yield caused by the design, the process, the materials or the tool? A contamination event, a tool drift or a design marginal to the process can look alike from outside. The expert reads statistical process control charts, wafer maps and failure analysis, and tests each explanation against the data. A shortage or allocation dispute may call for a supply chain expert as well.
Each opinion must stay within what a reliable application of the method supports 5, and physical testing should be repeatable by the other side.
Look for an engineer or scientist with direct experience at the relevant level: device physics, process integration, design or packaging, ideally with published work or patents in that exact area. A doctorate is common, but a senior fab engineer may be the better witness on how a line really runs. Ask when the expert last worked at that process node, since practice moves fast and the opinion should fit the technology of the period.
The ITC says the primary remedy in Section 337 investigations is an exclusion order that directs Customs to stop infringing imports from entering the United States.
Case Types
Chip patent infringement and invalidity
ITC Section 337 import investigations
Trade secret theft of process know-how
Export control classification and end use
Foundry yield and quality disputes
Wafer contamination and tool failure
Semiconductor supply and allocation contracts
Packaging and reliability failures
Qualifications
Related Specialties
FAQ
Look for direct experience at the relevant level, such as device physics, process or design, with published work or patents in that area. Ask when the expert last worked at that process node.
It is an investigation at the International Trade Commission, most often about patent or trademark rights in imported goods. The primary remedy is an exclusion order directing Customs to stop infringing imports.
They image and measure the accused device and map each claim element to what they find. The method should be documented so the other side can test it, and the work follows the court's claim construction.
Often the exact process details, such as temperatures, gases, times and sequence, when kept secret. The expert helps define the secret precisely and compares it with what the defendant did.
Yes. Rules such as 15 CFR 744.23 restrict certain exports without a license when a person has knowledge of a listed end use. They have changed several times, so the text for the shipment date is what counts.
In general, semiconductors expert fees are determined by the expert themselves, based on a variety of criteria. Among those criteria are experience, the technology involved, lab and reverse engineering needs, the ITC or court schedule and the amount of testimony. Vident does have some influence over expert fees by comparing experts within a specialty, but ultimately it is a personal decision by the expert.
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