SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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SCHEDULE 14D-9

(RULE 14d-101)

SOLICITATION/RECOMMENDATION STATEMENT UNDER SECTION 14(d)(4)

OF THE SECURITIES EXCHANGE ACT OF 1934

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CEPHALON, INC.

(Name of Subject Company)

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CEPHALON, INC.

(Name of Person(s) Filing Statement)

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Common Stock, Par Value $0.01 Per Share

(including the associated Series A Junior

Participating Preferred Stock Purchase Rights)

(Title of Class of Securities)

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156708109

(CUSIP Number of Class of Securities)

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Gerald J. Pappert

Executive Vice President, General Counsel and Secretary

Cephalon, Inc.

41 Moores Rd.

Frazer, Pennsylvania 19355

(610) 344-0200

(Name, Address and Telephone Number of Person authorized to Receive

Notices and Communications on Behalf of the Person(s) Filing Statement)

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With copies to:

Eileen T. Nugent, Esq.

Neil P. Stronski, Esq.

Skadden, Arps, Slate, Meagher & Flom LLP

Four Times Square

New York, New York 10036

(212) 735-3000

[ X]   Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer.