Delivering legal papers is called "service of process". The law says that legal papers have to be "served" (delivered) the right way.I HEREBY CERTIFY that a copy of this Line and the following discovery material were this. The Notice of Deposition says the name of the case, the index or docket number, and when and where the deposition will take place. Discovery is a legal tool each party can use to strengthen their case. Through discovery you may receive new information and documents. First, you should contact opposing counsel and ask them to consent to filing the trial praecipe. Interrogatories are one form of discovery in a lawsuit. An interrogatory is a written question from one party to the lawsuit to another party to the lawsuit. Fill in the Certificate of Service at the bottom of the counterclaim.