A motion to dismiss a complaint pursuant to CPLR 3211(a)(1) may be granted only if the documentary evidence submitted by the moving party utterly refutes the factual allegations of the complaint and conclusively establishes a defense to the claims as a matter of law. In order to be considered documentary, the evidence must be unambiguous and of undisputed authenticity, that is, it must be essentially unassailable. Affidavits, deposition testimony, and letters are not considered documentary evidence within the meaning of CPLR 3211(a)(1).
All Nations Steel Corp. v. KSK Constr. Group, LLC, NY Slip Op 04449 (2d Dep't July 30, 2025)
