UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)

December 6, 2010

Verigy Ltd.

(Exact name of registrant as specified in its charter)

Verigy Ltd.

No. 1 Yishun Ave. 7

Singapore 768923

(Address of principal executive offices, including zip code)

+65 6755-2033

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

As previously announced, on November 17, 2010, Verigy Ltd. (“Verigy”) entered into an Agreement and Plan of Merger, dated as of November 17, 2010 (the “Agreement”), by and among Verigy, Alisier Limited, a corporation organized under the laws of Singapore (“Holdco”), Lobster-1 Merger Corporation, a Massachusetts corporation and a wholly-owned subsidiary of Verigy, Lobster-2 Merger Corporation, a Massachusetts corporation and a wholly-owned subsidiary of Holdco, and LTX-Credence Corporation, a Massachusetts corporation (“LTX-Credence”), that provides for Verigy and LTX-Credence to combine their businesses.

Subsequently, on December 6, 2010, Verigy announced that it had received an unsolicited proposal from Advantest Corporation to acquire all of the outstanding Verigy ordinary shares for $12.15 per share in cash.

A copy of the press release issued by Verigy is attached hereto as Exhibit 99.1 and is incorporated by reference herein. A copy of Verigy’s notice to LTX-Credence under the Agreement regarding the Advantest proposal is attached hereto as Exhibit 99.2 and is incorporated by reference herein. A copy of the proposal received from Advantest Corporation is attached hereto as Exhibit 99.3 and is incorporated by reference herein.

Additional Information and Where You Can Find It

This communication may be deemed to be solicitation material in respect of the proposed transaction between Verigy and LTX-Credence. In connection with the transaction, Verigy and Holdco will file a registration statement on Form S-4 with the SEC containing a joint proxy statement/prospectus. The joint proxy statement/prospectus will be mailed to the shareholders of Verigy and LTX-Credence. Investors and security holders of Verigy and LTX-Credence are urged to read the registration statement and joint proxy statement/prospectus when it becomes available because it will contain important information about Verigy, Holdco, LTX-Credence and the proposed transaction. The registration statement and joint proxy statement/prospectus (when they become available), and any other documents filed by Verigy, Holdco or LTX-Credence with the SEC, may be obtained free of charge at the SEC’s website at www.sec.gov. In addition, investors and security holders may obtain free copies of the documents filed with the SEC by Verigy, Holdco and LTX-Credence by contacting, respectively, Verigy Investor Relations by e-mail at judy.davies@verigy.com or by telephone at 1-408-864-7549 or by contacting LTX-Credence Investor Relations by e-mail at rich_yerganian@ltxc.com or by telephone at 1-781-467-5063. Investors and security holders are urged to read the registration statement and joint proxy statement/prospectus and the other relevant materials when they become available before making any voting or investment decision with respect to the proposed transaction.

Verigy, LTX-Credence and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from their shareholders in favor of the proposed transaction. Information about the directors and executive officers of Verigy and LTX-Credence and their respective interests in the proposed transaction will be available in the joint proxy statement/prospectus. Additional information regarding the Verigy directors and executive officers is also included in Verigy’s proxy statement for its 2010 Annual Meeting of Shareholders, which was filed with the SEC on or about February 23, 2010. As of February 12, 2010, Verigy’s directors and executive officers beneficially owned approximately 1,595,151 shares, or 2.7%, of Verigy’s ordinary shares. Additional information regarding the LTX-Credence directors and executive officers is also included in LTX-Credence’s proxy statement for its 2011 Annual Meeting of Shareholders, which was filed with the SEC on or about November 8, 2010. As of September 30, 2010, LTX-Credence’s directors and executive officers beneficially owned approximately 1,940,204 shares, or 3.9%, of LTX-Credence’s common stock. These documents are available free of charge at the SEC’s web site at www.sec.gov and from Verigy and LTX-Credence, respectively, at the e-mail addresses and phone numbers listed above.

(d) Exhibits.

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 hereunto duly authorized.

Date: December 6, 2010