XENOPORT INC - FORM 10-Q - EX-32.1 - CERTIFICATION OF CEO AND CFO REQUIRED BY RULE 13A-14(B) OR RULE 15D-14(B) - November 4, 2009
Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended (the Exchange Act), and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. Section 1350), Ronald W. Barrett, Chief Executive Officer of XenoPort, Inc. (the Company), and William G. Harris, Senior Vice President of Finance and Chief Financial Officer of the Company, each hereby certifies that, to the best of his knowledge:
1. The Companys Quarterly Report on Form 10-Q for the period ended September 30, 2009, to which this Certification is attached as Exhibit 32.1 (the Periodic Report), fully complies with the requirements of Section 13(a) or 15(d) of the Exchange Act, and
2. The information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
In Witness Whereof, the undersigned have set their hands hereto as of the 4th day of November, 2009.