The grounds for objecting to an interrogatory must be stated with specificity. An attorney who objects to any interrogatories must sign the objections. (c)Use.Interrogatories must be provided to ("served on") (1) the party who is required to answer them, and (2) the other parties to the lawsuit. Rule 33 assures that the objections will lead directly to court, through its requirement that they be served with a notice of hearing. Rule 26 - General Provisions Governing Discovery (a)Discovery Methods. First, a summons and complaint must be served within 90 days of filing rather than 120 days. (a) Service: When Required. Interrogatories must be served on the party from whom responses are sought and all other parties who have appeared in the action. These rules govern the procedure in all civil actions and proceedings in the United States district courts, except as stated in Rule 81. Federal Rule 33(b)(4) emphasizes that the "grounds for objecting to an interrogatory must be stated with specificity.