Discovery is the exchange of information between people or companies involved in a lawsuit before the case goes to trial. Certificate of Service.You can email, chat or text with us using our Ask a Librarian service. Write the address of the party where you mailed the copy to or where you hand delivered the copy. . (1) Required Filings; Certificate of Service. A motion for an order to a nonparty must be made in the court where the discovery is or will be taken. (3) Specific Motions. The parties have 180 days to complete discovery. Tex. This is a Texas form and can be use in Collin Local County. What is WorldCat Discovery?