Under New York Law, property damage is deemed to occur within the period of an occurrence-based policy, if injury-in-fact takes place during the policy period. See Continental Casualty Co. v. Rapid-American Corp., 177 A.D.2d 61 (App. Div., 1992). An insurer may only refuse to defend an action, however, where a comparison of the policy with the underlying complaint shows on its face that there is no potential for coverage. See Ruder & Finn, Inc. v. Seaboard Sur. Co., 52 N.Y.2d 663 (1981).