3212(b) motion – affidavit from movant necessary

Understanding CPLR 3212(b) Affidavit Requirements in Summary Judgment Motions

Summary judgment is a powerful procedural device that allows courts to resolve cases without trial when no genuine issues of material fact exist. In New York, CPLR 3212(b) governs the form and content of summary judgment motions, explicitly requiring that such motions be supported by an affidavit “by a person having knowledge of the facts.” However, as the Second Department clarifies in Maragos v Sakurai, this requirement is not always as rigid as it appears.

The tension between strict procedural compliance and substantive justice creates a recurring question in New York civil practice: when will courts excuse technical deficiencies in motion papers? Understanding how appellate courts apply flexible standards to the personal knowledge requirement can mean the difference between winning and losing a summary judgment motion, even when the underlying facts strongly favor the movant.

This issue frequently arises in no-fault insurance litigation, commercial disputes, and personal injury cases where parties rely on documentary evidence, deposition testimony, and attorney affirmations rather than traditional sworn affidavits from fact witnesses. The question becomes whether the absence of a personal knowledge affidavit should automatically doom an otherwise well-supported motion.

Case Background

In Maragos v Sakurai, the movant sought summary judgment but failed to submit an affidavit from a person with personal knowledge of the facts, instead relying on an attorney’s affirmation supported by other proof including deposition testimony and documentary evidence. The trial court denied the motion based on this procedural deficiency, applying a strict interpretation of CPLR 3212(b)‘s requirements.

On appeal, the Second Department confronted the question of whether this technical deficiency required automatic denial of the motion, even where the submitted proof otherwise established the movant’s entitlement to judgment as a matter of law.

Jason Tenenbaum’s Analysis:

Maragos v Sakurai, 2012 NY Slip Op 01592 (2d Dept. 2012)

“CPLR 3212(b) requires that a motion for summary judgment must be supported by, among other things, an affidavit “by a person having knowledge of the facts.” Notwithstanding this requirement, however, where a moving party supports a summary judgment motion with an attorney’s affirmation, deposition testimony, and other proof, the failure to submit an affidavit by a person with knowledge of the facts is not necessarily fatal to the motion”

There are some courts that will do anything in their power to stave off granting  summary judgment to a movant.  Just recently, a Supreme Court Justice stated that the absence of an original affidavit rendered an otherwise uncontested affidavit to be inadmissible.  The actions of the Supreme Court in this matter are not necessarily shocking.

CPLR 3212(b) requires that a motion for summary judgment must be supported by, among other things, an affidavit “by a person having knowledge of the facts.” Notwithstanding this requirement, however, where a moving party supports a summary judgment motion with an attorney’s affirmation, deposition testimony, and other proof, the failure to submit an affidavit by a person with knowledge of the facts is not necessarily fatal to the motion

Legal Significance: Form Versus Substance in Summary Judgment Practice

The Maragos decision reflects a broader principle in New York civil procedure: courts should not elevate form over substance when determining whether a party has met its burden on a summary judgment motion. While CPLR 3212(b) explicitly requires an affidavit from someone with personal knowledge, the statute’s purpose is to ensure the motion is supported by competent evidence, not to create an insurmountable technical barrier.

This flexible approach serves important policy goals. Summary judgment is designed to expedite litigation by resolving cases that lack genuine factual disputes. If courts mechanically denied every motion lacking a personal knowledge affidavit, even where deposition testimony and documentary evidence clearly established the movant’s case, the summary judgment device would become less effective at achieving judicial efficiency.

However, practitioners should not interpret Maragos as license to dispense with affidavits entirely. The decision emphasizes that other proof must be substantial enough to compensate for the missing affidavit. Deposition testimony places facts in the record under oath, documentary evidence provides objective verification, and attorney affirmations can synthesize and present this material. But where these alternative sources are insufficient or contested, the absence of a personal knowledge affidavit may indeed prove fatal.

Practical Implications for Litigators

For practitioners moving for summary judgment, Maragos offers both opportunity and caution. The decision demonstrates that courts will consider the totality of submitted proof rather than mechanically applying checklist requirements. When a case file contains comprehensive deposition testimony, authenticated documents, and clear legal authority, practitioners may succeed even without submitting separate affidavits.

Nevertheless, best practice dictates including affidavits from witnesses with personal knowledge whenever possible. Relying on the Maragos exception creates unnecessary risk. Different judges may apply varying levels of scrutiny to motions lacking personal knowledge affidavits, and appellate review could yield different results depending on the specific facts and proof submitted.

Defense practitioners opposing summary judgment should carefully examine whether the movant has submitted adequate proof beyond attorney affirmations. If the motion lacks both a personal knowledge affidavit and substantial alternative evidence, Maragos provides no safe harbor. Opposing counsel should highlight this deficiency and argue that the movant has failed to meet the statutory requirements of CPLR 3212(b).

Related Articles

• Understanding CPLR 3212(g): When Summary Judgment Relief Becomes Improper
• CPLR § 2106 Amendment Eliminates Affidavit Notarization Requirement: What This Means for New York Litigation
• CPLR 3212(f) discovery limitations do not apply
• CPLR 2001 at Play Again in dispositive applications
• New York No-Fault Insurance Law

Legal Update (February 2026): Since this post was published in 2012, CPLR 3212 provisions regarding summary judgment motion requirements may have been amended through legislative changes or refined through subsequent appellate decisions. Practitioners should verify current procedural requirements for affidavits and supporting documentation under CPLR 3212(b), as well as review recent case law interpreting the necessity of personal knowledge affidavits versus attorney affirmations.