An Affidavit of Service and a Certificate of Service are both documents used to prove that legal documents have been delivered to the relevant parties in a legal proceeding. However, they differ in purpose, use, and requirements:
Affidavit of Service
- Definition: A sworn statement signed under oath by the person who delivered the documents, affirming that the service was completed.
- When Used: Typically used when personal service (hand delivery) or other formal service methods are required, such as serving summons, complaints, subpoenas, or motions.
- Contents:
- Who was served (name of the party or their representative).
- What was served (description of the documents).
- When the service occurred (date and time).
- Where the service occurred (location).
- How the service was performed (e.g., in person, by mail).
- Additional Requirement: It must be notarized or otherwise sworn under penalty of perjury.
- Common Usage:
- Proving that initial legal notices (like summons) were delivered properly.
- Used in cases where strict formalities are required for the initiation of a lawsuit.
Certificate of Service
- Definition: A statement signed by the person who delivered or sent the documents, certifying that they have been served on the opposing parties, but it is not sworn under oath.
- When Used: Often used for less formal service methods, such as when parties are already involved in a case and documents like motions, pleadings, or discovery requests are exchanged.
- Contents:
- Who was served (name and address).
- What was served (description of the documents).
- When the service occurred (date).
- How the service was performed (e.g., mail, electronic filing, or hand delivery).
- Additional Requirement: Does not require notarization, but it must be signed by the server.
- Common Usage:
- Used in ongoing litigation for routine filings.
- Filed with the court as proof that the required documents were sent to all involved parties.
Key Differences:
| Aspect | Affidavit of Service | Certificate of Service |
|---|---|---|
| Formality | More formal; requires notarization. | Less formal; does not require notarization. |
| Use | Proves service of documents initiating a lawsuit. | Proves service of documents in ongoing litigation. |
| Sworn Statement | Sworn under oath or penalty of perjury. | Signed but not sworn under oath. |
| Typical Documents | Summons, subpoenas, or complaint. | Motions, briefs, or discovery requests. |
Each is critical for ensuring proper notification of legal actions, as required by due process. The choice between them depends on the type of document served and the stage of the legal process.