SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14D-9

(RULE 14d-101)

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

OF THE SECURITIES EXCHANGE ACT OF 1934

CEPHALON, INC.

(Name of Subject Company)

CEPHALON, INC.

(Name of Person(s) Filing Statement)

Common Stock, Par Value $0.01 Per Share

(including the associated Series A Junior

Participating Preferred Stock Purchase Rights)

(Title of Class of Securities)

156708109

(CUSIP Number of Class of Securities)

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)

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.