SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement [X] Definitive Additional Materials Soliciting Material Pursuant to 240.14a-12 COVANCE INC. ------------ (Name of Registrant as Specified In Its Charter) ------------ (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): No fee required. Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11. (1) Title of each class of securities to which transaction applies: (2) Aggregate number of securities to which transaction applies: (3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined): (4) Proposed maximum aggregate value of transaction: (5) Total fee paid: Fee paid previously with preliminary materials. Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing. (1) Amount Previously Paid: (2) Form, Schedule or Registration Statement No.: (3) Filing Party: (4) Date Filed: COVANCE INC. 210 Carnegie Center Princeton, New Jersey 08540 April 19, 2002 Dear Shareholder: We have previously sent to you proxy material for the Annual Meeting of Shareholders of Covance Inc. to be held on May 7, 2002. Your Board of Directors unanimously recommends that shareholders vote FOR all proposals under consideration. Your vote is important, no matter how many or how few shares you may own. Please vote today by telephone, internet or by signing, dating and returning the enclosed proxy card today in the envelope provided. Very truly yours, James W. Lovett Corporate Vice President, General Counsel and Secretary ================================================================================ IMPORTANT NOTE: REMEMBER, NOW YOU CAN VOTE BY TELEPHONE OR VIA THE INTERNET If you have any questions, or need assistance in voting your shares, please call our proxy solicitor, INNISFREE M&A INCORPORATED TOLL-FREE, at 1-888-750-5834. ================================================================================