EXHIBIT 99.1

Certification

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of CuraGen Corporation, a Delaware corporation (the “Company”), does hereby certify, to such officer’s knowledge, that:

The Quarterly Report on Form 10-Q for the quarter ended September 30, 2002 (the “Form 10-Q”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: November 14, 2002	By: /s/    Jonathan M. Rothberg, Ph.D.
	Jonathan M. Rothberg, Ph.D.
	Chief Executive Officer, President and
	Chairman of the Board
	(principal executive officer)
Dated: November 14, 2002	By: /s/    David M. Wurzer
	David M. Wurzer
	Executive Vice-President, Treasurer
	and Chief Financial Officer
	(principal financial and accounting officer)

The foregoing certification is being furnished solely pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 189, United States Code) and is not being filed as part of a separate disclosure document.