Expert disclosure deadlines govern service of expert identifications and reports, typically sequenced with the party bearing the burden disclosing first and rebuttal disclosures following.
Federal Rule 26(a)(2)(D) sets defaults absent a court order.
Alternative Names:
Expert Report Deadline, Expert Designation Date
Why it Matters?
Missing this deadline generally means proceeding without expert testimony, which is dispositive in cases requiring expert proof of causation or standard of care. Courts apply a harmless error analysis but rarely find prejudice absent where an opponent must prepare to meet a late-disclosed opinion. The sequencing also matters strategically, since disclosing first reveals the theory the opponent's rebuttal will target.
Frequently Confused with
Related terms
Frequently asked questions
What happens if the deadline is missed?
Why does sequencing matter?
