A Long Island law firm has lost its bid to force its insurer to defend the firm in two malpractice suits, after a federal judge found policy exclusions applied to the litigations because they involved enterprises outside the law firm.

Abrams, Fensterman, Fensterman, Eisman, Formato, Ferrara & Einiger sued Underwriters at Lloyd’s, London, after Lloyd’s claimed that policy provisions directed at separate business enterprises excluded coverage.