July 28, 2004 ADVANTEST CORPORATION (Toshio Maruyama, President and COO) (Stock Code Number: 6857, TSE first section) (Ticker Symbol: ATE, NYSE) Shinjuku NS Bldg., 4-1 Nishi-Shinjuku 2-chome Shinjuku-ku, Tokyo Japan Contact Person: Hiroshi Nakamura Manager, Accounting Department Phone: +81-(0)3-3342-7500 NOTICE REGARDING CHANGE IN AUDITORS Notice is hereby given that the following change (resignation) in auditors of ADVANTEST CORPORATION (the "Company") was approved by the Company's Board of Directors on July 28, 2004, pursuant to Paragraph 1 of Article 193-2 of the Securities and Exchange Law. 1. Reason for change On July 25, 2003, KPMG AZSA & Co. was appointed auditor to jointly audit the Company's consolidated financial statements with Ernst & Young ShinNihon. However, as the use of one auditor enhances efficiency, the Company decided to unify the auditors and delegate auditing responsibilities only to Ernst & Young ShinNihon. 2. Name of resigning auditor Name: KPMG AZSA & Co. Location of Head Office: AZSA Center Building, 1-2 Tsukudo-cho, Shinjuku-ku, Tokyo 3. Prospects Ernst & Young ShinNihon will continue to carry out the Company's audit pursuant to Paragraph 1 of Article 193-2 of the Securities and Exchange Law.