EXHIBIT 23 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS We have issued our report dated February 29, 2000 accompanying the consolidated financial statements included in the Annual Report of Refac and Subsidiaries on Form 10-K for the year ended December 31, 1999. We hereby consent to the incorporation by reference of said report in the Registration Statement (Form S- 8 No. 333-76085) pertaining to the Stock Option and Incentive Plans of Refac and Subsidiaries. GRANT THORNTON LLP New York, New York February 29, 2000