When giving expert witness evidence by way of a written report, many experts use a team to help assess the facts and formulate the opinions contained in their reports, especially in larger, more complex cases. Nevertheless, the expert is required to testify to every component of that report.

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There are instances in which a report can be co-authored by two experts, such as when one expert has more expertise in certain areas, or when another expert with similar expertise has been involved in the preparation of a large report. However, in situations where there are co-testifying experts, which are seen increasingly in international arbitrations in particular, little guidance is available.

In a recent article for Law360, Neil Ashton and Dan Langley outline the benefits and drawbacks of engaging co-testifying party experts in dispute resolution.

Read the full article.