Loading
Expert Witness Insights by Area of Expertise
6 min read
Published Date:
Last Modified Date:
Remote expert witness testimony in federal civil trials requires careful attention to court authorization, witness safeguards, exhibit handling, and technology preparation. This article explains how Rule 43(a) governs contemporaneous remote testimony, how remote trial appearances differ from remote depositions, and what attorneys should address when preparing experts, exhibits, and backup procedures for virtual testimony.
Remote expert witness testimony can make specialized testimony available without requiring the expert to appear physically in the courtroom, but it generally calls for advance procedural and technical preparation.
In a federal civil trial, the availability of videoconferencing technology does not by itself authorize remote testimony. Federal Rule of Civil Procedure 43(a) ordinarily requires testimony in open court but provides that, for good cause in compelling circumstances and with appropriate safeguards, the court may permit contemporaneous transmission from another location. The 1996 Advisory Committee Note cautions that inconvenience alone does not justify remote transmission.
This guide focuses on federal civil trials and explains how attorneys can prepare for remote expert witness testimony by addressing court authorization, witness preparation, exhibit control, technology testing, and safeguards designed to protect the integrity of the testimony.
Under Federal Rule of Civil Procedure 43(a), a federal civil court may permit contemporaneous remote testimony for good cause in compelling circumstances and with appropriate safeguards. The Advisory Committee Note indicates that the strongest circumstances generally involve an unexpected event, such as accident or illness, that prevents a witness from attending trial but does not prevent testimony from another location. The Note also warns that a party will have particular difficulty showing good cause and compelling circumstances if it could reasonably have anticipated the circumstances relied on to justify remote testimony. The Note advises giving notice as soon as the reasons are known. The Note also indicates that depositions, including video depositions, are ordinarily preferable when a trial subpoena cannot compel the witness to attend or when coordinating a trial date for all witnesses is difficult.
Counsel should also review:
Local rules and standing orders.
Pretrial and scheduling orders.
The assigned judge's procedures.
Deadlines for requesting a remote appearance.
Videoconferencing and exhibit procedures.
Technology-testing requirements.
Remote depositions and contemporaneous remote trial testimony are governed by different procedural rules. Federal Rule of Civil Procedure 30(b)(4) permits a deposition to be taken by telephone or other remote means by stipulation or, on motion, by court order, while contemporaneous remote trial testimony is governed by Rule 43(a).
Courtroom graphics
Trial exhibits
Remote expert witness testimony can make specialized testimony available without requiring the expert to appear physically in the courtroom, but it generally calls for advance procedural and technical preparation.
In a federal civil trial, the availability of videoconferencing technology does not by itself authorize remote testimony. Federal Rule of Civil Procedure 43(a) ordinarily requires testimony in open court but provides that, for good cause in compelling circumstances and with appropriate safeguards, the court may permit contemporaneous transmission from another location. The 1996 Advisory Committee Note cautions that inconvenience alone does not justify remote transmission.
This guide focuses on federal civil trials and explains how attorneys can prepare for remote expert witness testimony by addressing court authorization, witness preparation, exhibit control, technology testing, and safeguards designed to protect the integrity of the testimony.
Under Federal Rule of Civil Procedure 43(a), a federal civil court may permit contemporaneous remote testimony for good cause in compelling circumstances and with appropriate safeguards. The Advisory Committee Note indicates that the strongest circumstances generally involve an unexpected event, such as accident or illness, that prevents a witness from attending trial but does not prevent testimony from another location. The Note also warns that a party will have particular difficulty showing good cause and compelling circumstances if it could reasonably have anticipated the circumstances relied on to justify remote testimony. The Note advises giving notice as soon as the reasons are known. The Note also indicates that depositions, including video depositions, are ordinarily preferable when a trial subpoena cannot compel the witness to attend or when coordinating a trial date for all witnesses is difficult.
Counsel should also review:
Local rules and standing orders.
Pretrial and scheduling orders.
The assigned judge's procedures.
Deadlines for requesting a remote appearance.
Videoconferencing and exhibit procedures.
Technology-testing requirements.
Remote depositions and contemporaneous remote trial testimony are governed by different procedural rules. Federal Rule of Civil Procedure 30(b)(4) permits a deposition to be taken by telephone or other remote means by stipulation or, on motion, by court order, while contemporaneous remote trial testimony is governed by Rule 43(a).
Remote testimony can raise concerns about influences outside the camera's view.
The Advisory Committee Note explains that safeguards must verify the witness's identity, guard against influence from others present with the witness, and maintain accurate transmission.
Depending on the court's procedures, counsel may need to address who else is in the room, what materials the expert may access, whether electronic communications about the testimony are permitted, and whether communication with counsel about the testimony is allowed during breaks.
Participants should also follow the court's recording and image-capture rules rather than assume they may record, copy, or photograph remote proceedings. For example, the United States District Court for the Central District of California states that federal law prohibits recording, copying, photographing, and rebroadcasting court proceedings.
A suitably qualified expert should be prepared to explain the facts or data considered, the methodology and assumptions used, the analysis performed, and any limitations on the opinions. In federal civil proceedings governed by the Federal Rules of Evidence, Rule 702 requires the proponent to demonstrate to the court that it is more likely than not that the rule's admissibility requirements are satisfied. Those requirements include sufficient facts or data, reliable principles and methods, and an opinion that reflects a reliable application of those principles and methods to the facts of the case.
Preparation should also cover the expert's location and any court-specific restrictions or instructions that apply to the testimony setting.
A rehearsal using the actual computer, camera, microphone, and location can identify problems that may not appear during ordinary witness preparation.
Remote exhibits should be organized so that the court, counsel, and expert can identify and work from the correct version of each exhibit when it is used, subject to the court's procedures for providing materials to the witness. Counsel should verify exhibit numbers, page references, Bates numbers, redactions, and versions, and confirm with the court how exhibits will be displayed.
Attorneys should not assume that the expert will be allowed to share a screen. Courtroom videoconferencing may restrict features commonly available in business meetings, including chat, screen sharing, whiteboards, and question-and-answer tools.
Complex exhibits, such as engineering drawings, medical images, or spreadsheets, should also be tested for legibility at the size and resolution likely to be used during the proceeding.
Technology testing should use a setup as close as possible to the one the expert will use during testimony.
A technology check before the appearance should cover:
Internet stability.
Camera, audio, positioning, and background.
Court-required software.
Exhibit-display procedures.
Device power.
Notifications and unnecessary applications.
A reconnection or backup procedure for technical failures.
For example, the United States District Court for the Central District of California instructs remote participants to test equipment and connectivity, keep devices connected to power, limit distractions, and use reliable internet access.
Counsel should also determine what procedure the judge expects if audio or video fails. If the court has specified a backup procedure, the expert should know and follow it.
Remote direct and cross-examination should be structured so that the testimony and record remain clear and easy to follow.
Counsel can reduce confusion by identifying documents precisely, using exhibit and page numbers, confirming that the expert can see the material, and allowing time for objections or minor transmission delays.
For complex technical testimony, fewer visual elements may improve clarity. A focused diagram or highlighted document can be easier to follow than rapidly switching among multiple reports, slides, participant windows, and applications.
Can an expert witness testify remotely in a federal civil trial?
Yes, if the court permits it. When remote trial testimony is sought under Rule 43(a)'s contemporaneous-transmission provision, the rule requires good cause in compelling circumstances and appropriate safeguards. Local rules and judge-specific procedures may impose additional requirements.
Is remote expert testimony governed by the same rule as a remote deposition?
No. Federal Rule of Civil Procedure 30(b)(4) addresses depositions taken by telephone or other remote means, while Rule 43(a) governs contemporaneous remote testimony at a federal civil trial.
Can an expert keep a report or notes nearby while testifying remotely?
That depends on the court's instructions, applicable evidentiary rules, and the circumstances of the examination. If the expert uses a writing to refresh memory while testifying, Federal Rule of Evidence 612 gives the adverse party specified rights concerning that writing. Counsel should confirm in advance what materials the expert may have available.
What happens if the expert loses the internet connection?
The court may have a specific backup procedure for a technical failure. Counsel should confirm that procedure before testimony, and the expert should follow the court's instructions if audio, video, or connectivity fails.
Remote testimony can raise concerns about influences outside the camera's view.
The Advisory Committee Note explains that safeguards must verify the witness's identity, guard against influence from others present with the witness, and maintain accurate transmission.
Depending on the court's procedures, counsel may need to address who else is in the room, what materials the expert may access, whether electronic communications about the testimony are permitted, and whether communication with counsel about the testimony is allowed during breaks.
Participants should also follow the court's recording and image-capture rules rather than assume they may record, copy, or photograph remote proceedings. For example, the United States District Court for the Central District of California states that federal law prohibits recording, copying, photographing, and rebroadcasting court proceedings.
A suitably qualified expert should be prepared to explain the facts or data considered, the methodology and assumptions used, the analysis performed, and any limitations on the opinions. In federal civil proceedings governed by the Federal Rules of Evidence, Rule 702 requires the proponent to demonstrate to the court that it is more likely than not that the rule's admissibility requirements are satisfied. Those requirements include sufficient facts or data, reliable principles and methods, and an opinion that reflects a reliable application of those principles and methods to the facts of the case.
Preparation should also cover the expert's location and any court-specific restrictions or instructions that apply to the testimony setting.
A rehearsal using the actual computer, camera, microphone, and location can identify problems that may not appear during ordinary witness preparation.
Remote exhibits should be organized so that the court, counsel, and expert can identify and work from the correct version of each exhibit when it is used, subject to the court's procedures for providing materials to the witness. Counsel should verify exhibit numbers, page references, Bates numbers, redactions, and versions, and confirm with the court how exhibits will be displayed.
Attorneys should not assume that the expert will be allowed to share a screen. Courtroom videoconferencing may restrict features commonly available in business meetings, including chat, screen sharing, whiteboards, and question-and-answer tools.
Complex exhibits, such as engineering drawings, medical images, or spreadsheets, should also be tested for legibility at the size and resolution likely to be used during the proceeding.
Technology testing should use a setup as close as possible to the one the expert will use during testimony.
A technology check before the appearance should cover:
Internet stability.
Camera, audio, positioning, and background.
Court-required software.
Exhibit-display procedures.
Device power.
Notifications and unnecessary applications.
A reconnection or backup procedure for technical failures.
For example, the United States District Court for the Central District of California instructs remote participants to test equipment and connectivity, keep devices connected to power, limit distractions, and use reliable internet access.
Counsel should also determine what procedure the judge expects if audio or video fails. If the court has specified a backup procedure, the expert should know and follow it.
Remote direct and cross-examination should be structured so that the testimony and record remain clear and easy to follow.
Counsel can reduce confusion by identifying documents precisely, using exhibit and page numbers, confirming that the expert can see the material, and allowing time for objections or minor transmission delays.
For complex technical testimony, fewer visual elements may improve clarity. A focused diagram or highlighted document can be easier to follow than rapidly switching among multiple reports, slides, participant windows, and applications.
Can an expert witness testify remotely in a federal civil trial?
Yes, if the court permits it. When remote trial testimony is sought under Rule 43(a)'s contemporaneous-transmission provision, the rule requires good cause in compelling circumstances and appropriate safeguards. Local rules and judge-specific procedures may impose additional requirements.
Is remote expert testimony governed by the same rule as a remote deposition?
No. Federal Rule of Civil Procedure 30(b)(4) addresses depositions taken by telephone or other remote means, while Rule 43(a) governs contemporaneous remote testimony at a federal civil trial.
Can an expert keep a report or notes nearby while testifying remotely?
That depends on the court's instructions, applicable evidentiary rules, and the circumstances of the examination. If the expert uses a writing to refresh memory while testifying, Federal Rule of Evidence 612 gives the adverse party specified rights concerning that writing. Counsel should confirm in advance what materials the expert may have available.
What happens if the expert loses the internet connection?
The court may have a specific backup procedure for a technical failure. Counsel should confirm that procedure before testimony, and the expert should follow the court's instructions if audio, video, or connectivity fails.
Courtroom graphics
Trial exhibits
Expert Witness Insights by Area of Expertise
Expert Witness Insights by Area of Expertise