(a) Proof of service pursuant to Section 10-12 (a) and (b) may be made by written acknowledgment of service by the party served, by a certificate of counsel for the party filing the pleading or paper or by the self-represented party, or by affidavit of the person making the service, but these methods of proof shall not be exclusive. Proof of service shall include the address at which such service was made. If proof of such service is made by a certificate of counsel or by the self-represented party, it shall be in substantially the following form: I certify that a copy of the above was or will immediately be mailed or delivered electronically or nonelectronically on ( Date ) to all counsel and self-represented parties of record and that written consent for electronic delivery was received from all counsel exempt from e-filing and self-represented parties of record who were or will immediately be electronically served. ( Here list the name of each party served or immediately to be served and the address at which service was made or will immediately be made .) Or to the party against whom the default for failure to appear is claimed. ( Here list the name of each nonappearing party served or immediately to be served and the address at which service was made or will immediately be made .) ( Individual signature of counsel or self-represented party )
Section 10-14.—Proof of Service
Current through August 12, 2025 (2026 Practice Book edition) · Last verified July 9, 2026
In one sentenceThis section describes how a party proves that service under Section 10-12 was made, including the required content and a sample certification form.
Full Text of Section 10-14
(b) Proof of service pursuant to Section 10-12
(c) shall be made in the same manner as proof of service is made of an original writ and complaint, unless the judicial authority ordered service in some other manner, in which event service may be proved as prescribed in subsection (a) above. (P.B. 1978-1997, Sec. 123.)
Amendment History
(Amended June 29, 1998, to take effect Jan. 1, 1999; amended June 21, 2004, to take effect Jan. 1, 2005; amended June 13, 2014, to take effect Jan. 1, 2015; amended June 12, 2025, to take effect Jan. 1, 2026.) HISTORY—2026: In the first sentence of the second paragraph of subsection (a), ‘‘exempt from e-filing’’ was added after ‘‘from all counsel.’’
Rules Committee Commentary
Plain-English Summary
Section 10-14 sets out how to prove service made under Section 10-12(a) and (b). Proof may take the form of a written acknowledgment of service by the party served, a certificate of counsel or the self-represented party who filed the pleading or paper, or an affidavit from the person who made service — and these methods are not the only ones allowed. Whatever form it takes, proof of service must include the address where service was made. The section supplies a sample certificate format for counsel or a self-represented party to certify that a copy was or will immediately be mailed or delivered electronically or nonelectronically, listing each party served and the address used, with a similar form for certifying service on a party against whom a default for failure to appear is claimed.
Proof of service made under Section 10-12(c) — involving new claims against non-appearing or defaulted parties — must be made the same way proof is made for an original writ and complaint, unless the judicial authority ordered a different manner of service, in which case proof may be made as described for service under subsection (a).
Frequently Asked Questions
How is proof of service made under Section 10-12?
It may be shown by written acknowledgment from the party served, a certificate of counsel or the self-represented filer, or an affidavit from the person who made service, and proof of service must include the address at which service was made.
Is the certificate form in Section 10-14 mandatory?
The section says the certificate should be in substantially the form provided, and it notes that the listed proof methods are not exclusive, so other proof is possible.
How is proof of service on a defaulted party shown?
The certificate can list the name of each nonappearing party served and the address at which service was made or will be made, following the form set out in the section.
What if the judicial authority ordered a different method of service under Section 10-12(c)?
Proof of service may then be made as described in subsection (a) of this section rather than in the manner used for an original writ and complaint.
Source & verification. The section text is reproduced verbatim from the
official Connecticut Practice Book (Conn. Practice Book § 10-14). Prescribed by the Judges of the Superior Court of Connecticut (Conn. Gen. Stat. Section 51-14). The plain-English summary is original and written by us. Last verified July 9, 2026. ·
Official source
Also known as: proof of service requirement Connecticutcertificate of service CT pleadingaffidavit of service pleadinghow to prove service on opposing partyproof of service form CT
COMMENTARY—2026: The changes to this section amend the certification by counsel by requiring only consent for electronic delivery from self-represented parties of record and counsel exempt from e-filing. Any attorney who is not exempt from e-filing is required to accept electronic delivery, regardless of consent.