- Rule 4(c): Plaintiff must serve summons and complaint in a time allowed by Rule 4(m); Any person 18 years or older and not a party may serve, or plaintiff can request service by US Marshal - Rule 4(d): Plaintiff may request that the defendant waive service (avoid unnecessary expenses of service); If defendant fails to return a waiver, court must impose on defendant; Defendant who timely returns a waiver need not serve an answer until 60 days after request was sent