Cellular, WiFi and Bluetooth Patent Testimony
Wireless Patent Experts Who Have Worked Inside the Network
When the case turns on how a phone talks to the network or whether an accused device does what the claim says, counsel needs an expert who has worked inside mobile devices and cellular networks. The comparison runs from the asserted claims to the exact 3GPP release or IEEE 802.11 amendment the product implements and, where the record supports it, to packet captures that show what the device does on the air. GDF has testified in federal district court, ITC 337 wireless proceedings are a routine assignment, and our consulting expert experience includes Motorola Mobility v. Microsoft and Apple v. Samsung.
A Practice Built on Mobile Devices and Cellular Networks
Joseph Caruso, our founder, CEO and CTO, has worked in technology since 1980, and mobile devices and cellular networks are part of that record alongside software development, mainframe databases and real time transaction systems. His consulting expert experience includes Motorola Mobility v. Microsoft and Apple v. Samsung, patent litigation in which the technology at issue was mobile technology, and that background shapes how we read a specification, a protocol log and an accused product. Read his full profile and ask for a current CV.
The practice has testified in federal district court, and ITC 337 wireless proceedings are a routine assignment, alongside multidistrict litigation and arbitration. Our technology expert practice most often serves Fortune 1000 and AmLaw 100 clients and also serves small and midsize businesses. Expert selection, availability and conflicts are confirmed during scoping, and the retaining firm receives the proposed expert's current CV before anything is engaged.
Every wireless opinion starts by confirming the standard and the method. We specify the actual LTE or 5G release, the feature, the implementation version and the disputed technical question, because each protocol feature belongs to a particular release and each laboratory test to particular equipment. The engagement letter names the assigned expert, the implementation records available and the method for each question, and the workpapers preserve the referenced specification edition, the inputs and the results so the comparison can be repeated.
Primary references: 3GPP specifications by series.
Ask who would sign the report and sit for deposition in your matter; a senior examiner will tell you on the first call, which is free.
The engagement
Wireless Expert Testimony Grounded in the Specification and the Capture
Cellular and wireless matters have their own technical language. Standard essential patent portfolios read on specific sections of 3GPP releases, WiFi patents read on specific IEEE 802.11 amendments and short range protocols such as Bluetooth read on their own specifications. A useful expert opinion is anchored in the actual specification text and, where the record supports it, in packet captures or protocol logs that show what the accused product does on the air.
Cellular, WiFi and short range disputes are each read against the specific 3GPP release, IEEE 802.11 amendment or protocol specification the accused product implements.
For federal patent litigation and ITC Section 337 proceedings we compare the asserted claims with the accused specification sections and the accused product's protocol behavior. The comparison applies the claim constructions in the case element by element, so the tribunal sees exactly where the product meets or departs from each claim.
The work covers the network, the device, the modem firmware and the application software above the wireless stack, and the opinion is written so a reader without an engineering degree can follow it from the claim element to the specification to the evidence. Call (800) 868-8189 to describe the accused product and the schedule, and we will tell you what the record will need.
Scope
Cellular standard essential patent analysis
We compare asserted claims element by element against the relevant 3GPP technical specifications and distinguish mandatory requirements from optional or informative sections when essentiality is in question.
WiFi and IEEE 802.11 patent testimony
We analyze accused products against the specific 802.11 amendment at issue, with attention to the features the claims actually recite rather than the marketing name on the box.
Bluetooth and short range protocols
We analyze Bluetooth and other low power, mesh and discovery protocols where the claims turn on pairing, routing or power behavior, following the applicable specification and the transport actually used.
Modem firmware and software allocation
We examine licensed modem chipsets in accused products and allocate observed behavior between the modem implementation and the manufacturer's own software. That allocation is often what the exhaustion and damages arguments rest on.
ITC 337 wireless proceedings
We take wireless expert assignments on ITC 337 schedules, including infringement, the technical prong of domestic industry, redesigns and design arounds, with coordinated coverage across parallel district court matters.
Trade secret disputes in wireless product lines
We analyze claimed trade secrets in firmware, calibration data, radio test procedures, reference designs and antenna designs, and we keep evidence of access distinct from evidence of use.
Expert Rebuttal, Cross Examination, and Daubert Motion Support
We prepare rebuttal declarations on opposing wireless expert reports, question sets for radio engineers and modem firmware witnesses and declarations on expert methodology for Daubert motions.
If the asserted claims are already identified, send the patent numbers and the accused products and we will say what testing the opinion will need.
Methodology
How the Wireless Expert Engagement Runs
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Retention, conflicts and scope
We run a conflict check across wireless vendors and licensors, agree on the retention and write a scope note naming the wireless subject matter, the releases and the standards in scope.
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Specification and capture reconciliation
We reconcile the asserted claims against the accused specification sections and, where the record supports it, against protocol captures from the accused product.
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The written report
The expert report anchors every opinion to a specific claim element, a specific specification section and a specific piece of accused product evidence, with the testing method and equipment stated.
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Deposition, Evidentiary Hearing, and Trial Testimony
We prepare with the litigation team, sit for deposition and testify at the ITC hearing or the district court trial, and we retain the workpapers afterward.
Tell us the asserted patents, the accused products and the procedural schedule and a senior examiner will outline the record and the testing the opinion will need; the first consultation is free.
Evidence commonly examined
The Wireless Record We Examine
The asserted patents, their file histories and the prior art define the claims, and the 3GPP technical specifications and IEEE 802 amendments for the accused releases define the standard. Accused product firmware, over the air update packages and application binaries show what shipped, packet captures, protocol traces and modem debug logs show what the product does where the record supports them, and vendor confidential specifications produced under the protective order fill in what the public documents leave out. Opposing wireless expert reports, workpapers and testing records give us something concrete to test, and the court's orders, protective orders and the ITC procedural schedule govern how the work is done and when.
What you can expect
Expert Reports, Essentiality Analysis and Testimony
Counsel receives an expert report with claim element analysis against the 3GPP or IEEE specifications, an essentiality declaration where essentiality is at issue and an appendix listing the captures, traces and specification sections relied on. Where the matter calls for it we add a rebuttal declaration on the opposing wireless expert's report, demonstratives sourced to specification sections and captured protocol traces, and deposition, hearing and trial testimony within the scope of the report.
Attorneys who want to understand how retention, the report and testimony are scoped before calling can read the digital forensics FAQ first.
Frequently asked
ITC, Essentiality and 5G Wireless Matters
Do you take ITC 337 wireless work, or only district court patent work?
Both. ITC 337 wireless proceedings are a routine assignment for this practice, alongside federal district court matters. Qualifications, conflicts and access are confirmed at retention, and the deliverables are set against the Commission's schedule.
Can you testify on essentiality independent of infringement?
Yes. The essentiality comparison uses the applicable specification version, the identified claims and the constructions in the case. The analysis follows the rules of the forum hearing the dispute rather than importing a rule from another.
How is a packet capture used at hearing?
Where a capture is in the record it becomes evidence like any other exhibit. The report cites the frames relevant to the finding, and the demonstratives show the specific fields on which the opinion turns so the tribunal can see the behavior rather than take our word for it.
Do you handle 5G matters where the accused release is still evolving?
Yes. The report anchors to the specific 3GPP release implemented by the relevant product version during the period at issue. Later releases are treated as background context, never as the basis for the finding.
Can you support a trade secret claim involving wireless firmware or radio designs?
Yes. We examine firmware, calibration data, radio test procedures, reference designs and antenna designs, establish what was accessed and what was used, and keep those two questions separate in the report because they are separate in the law.
Talk with an examiner
Put a Wireless Expert on the Accused Product
Tell us the patents or trade secrets at issue, the products and the schedule. We will review relevant experience, potential conflicts and the proposed scope before any engagement begins.
Global Digital Forensics has operated since 1992 and brings court tested experts and 24/7 dispatch to wireless disputes nationwide.
Talk with an examiner
Bring the Claims and the Accused Product to Us
On the first call a senior examiner reviews the asserted patents, the accused products and the procedural schedule, identifies the specification releases in play and tells you which captures and protocol logs to request. The consultation is free.
24/7 hotline: (800) 868-8189
GDF does not accept pro se litigation cases, and GDF may decline matrimonial or family law cases at our discretion.
Reviewed by Joseph Caruso, Founder, CEO and CTO, CISSP. Last reviewed .