U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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All TitlesTitle 20Chapter IIPart 355 - PART 355—REGULATIONS UNDER THE ADMINISTRATIVE FALSE CLAIMS ACT
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(a) Service of a complaint must be made by certified or registered mail or by delivery in any manner authorized by Rule 4(d) of the Federal Rules of Civil Procedure.
(b) Proof of service, stating the name and address of the person on whom the complaint was served, and the manner and date of service, may be made by—
(1) Affidavit of the individual making service;
(2) An acknowledged U.S. Postal Service return receipt card; or
(3) Written acknowledgment of the respondent.
