What is a certificate of discovery?

A document that certifies to the Court that a party has filed a document as part of the discovery phase of a tort or lawsuit, such as serving Interrogatories, Requests for Production or Documents, or Answers to Interrogatories and Responses to Requests of Production of Documents, also Notices of Deposition, etc. Usually the discovery itself with a copy of the certificate goes to all parties, and the Court gets the original certificate, but not the discovery. The practice varies from State to State and from jurisdiction to jurisdiction.