FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of October, 2006 Commission File Number 1-15236 Advantest Corporation --------------------- (Translation of Registrant's Name Into English) Shin Marunouchi Center Building ------------------------------- 1-6-2, Marunouchi ----------------- Chiyoda-ku ---------- Tokyo 100-0005 -------------- Japan ----- (Address of Principal Executive Offices) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F X Form 40-F --- Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):_________ Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):_________ Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes No X --- --- If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):_________ Materials Contained in this Report: 1. English translation of a press release dated October 27, 2006, announcing the revisions for the earnings forecast for the fiscal year ending March 31, 2007. 2. English translation of the Japanese-language Financial Digest for the interim fiscal period ended September 30, 2006, as filed with the Tokyo Stock Exchange on October 27, 2006. 3. English translation of the Articles of Incorporation of the registrant as amended and filed with the Tokyo Stock Exchange on October 1, 2006. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Advantest Corporation By: /s/ Hitoshi Owada ------------------------------ Name: Hitoshi Owada Title: Director and Managing Executive Officer Date: October 27, 2006