Exhibit 5 WEIL, GOTSHAL & MANGES LLP A LIMITED LIABILITY PARTNERSHIP INCLUDING PROFESSIONAL CORPORATIONS 767 FIFTH AVENUE NEW YORK, NY 10153 212-310-8000 (FAX) 212-310-8007 January 8, 2001 CopyTele, Inc. 900 Walt Whitman Road Melville, New York 11747 Ladies and Gentlemen: We have acted as counsel to CopyTele, Inc. (the "Corporation") in connection with the preparation of the Registration Statement on Form S-8 (the "Registration Statement") filed by the Corporation with the Securities and Exchange Commission on the date hereof with respect to 5,000,000 shares of Common Stock, par value $.01 per share (the "Common Stock"), of the Corporation being registered in connection with the CopyTele, Inc. 2000 Share Incentive Plan (the "Plan"). In so acting, we have examined originals or copies, certified or otherwise identified to our satisfaction, of the Registration Statement, the Plan and such corporate records, agreements, documents and other instruments and such certificates or comparable documents of public officials and of officers and representatives of the Corporation, and have made such inquiries of such officers and representatives, as we have deemed relevant and necessary as a basis for the opinions hereinafter set forth. In such examination, we have assumed the genuineness of all signatures, the legal capacity of natural persons, the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted to us as certified, conformed or photostatic copies and the authenticity of the originals of such latter documents. As to all questions of fact material to this opinion that have not been independently established, we have relied upon certificates or comparable documents of officers and representatives of the Corporation. Based upon the foregoing, and subject to the qualifications stated herein, we are of the opinion that the 5,000,000 shares of Common Stock being registered pursuant to the Registration Statement have been duly authorized and, when issued and delivered upon receipt by the Corporation of consideration constituting lawful consideration under Delaware law in accordance with the Plan, will be validly issued, fully paid and non-assessable. We hereby consent to the filing of a copy of this opinion with the Securities and Exchange Commission as an exhibit to the Registration Statement and to any and all references to our firm in the Prospectus which is a part of the Registration Statement. Very truly yours, /S/ WEIL, GOTSHAL & MANGES LLP