UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* Mylan Laboratories Inc. (Name of Issuer) Common Stock, par value $.50 per share (Title of Class of Securities) 628530107 (CUSIP Number) Yevgeny Fundler, Esq. Counsel Icahn Associates Corp. & affiliated companies 767 Fifth Avenue, 47th Floor New York, New York 10153 (212) 702-4380 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) September 16, 2004 (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Section 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box / /. NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d- for other parties to whom copies are to be sent. *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). SCHEDULE 13D CUSIP No. 628530107 1 NAME OF REPORTING PERSON Carl C. Icahn S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS AF 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) /X/ 6 CITIZENSHIP OR PLACE OF ORGANIZATION United States of America NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 23,906,800 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 23,906,800 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 23,906,800 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.90% 14 TYPE OF REPORTING PERSON IN SCHEDULE 13D CUSIP No. 628530107 1 NAME OF REPORTING PERSON Barberry Corp. S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS AF 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) /X/ 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 23,906,800 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 23,906,800 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 23,906,800 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.90% 14 TYPE OF REPORTING PERSON CO SCHEDULE 13D CUSIP No. 628530107 1 NAME OF REPORTING PERSON Hopper Investments LLC S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS AF 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) /X/ 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 23,906,800 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 23,906,800 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 23,906,800 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.90% 14 TYPE OF REPORTING PERSON OO SCHEDULE 13D CUSIP No. 628530107 1 NAME OF REPORTING PERSON High River Limited Partnership S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) /X/ 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 23,906,800 8 SHARED VOTING POWER 0 9 SOLE DISPOSITIVE POWER 23,906,800 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 23,906,800 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.90% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 628530107 1 NAME OF REPORTING PERSON Gail Golden S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS PF 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION United States of America NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 10,000 8 SHARED VOTING POWER 0 9 SOLE DISPOSITIVE POWER 10,000 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,000 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.004% 14 TYPE OF REPORTING PERSON IN SCHEDULE 13D Item 1. Security and Issuer This Schedule 13D filed by the Registrants with the U.S. Securities and Exchange Commission on September 7, 2004, relates to the common shares, $.50 par value (the "Shares"), of Mylan Laboratories Inc., a Pennsylvania corporation (the "Issuer") is amended to furnish information as set forth herein. All capitalized terms not otherwise defined shall have the meaning ascribed to such terms in the previously filed statement on Schedule 13D. Item 3. Source and Amount of Funds or Other Consideration Item 3 is hereby amended in its entirety to read as follows: As of the close of business on September 17, 2004, the aggregate purchase price of 23,906,800 Shares owned by Icahn Group was $414,518,724.79 (excluding commissions). The source of funding for the purchase of these Shares was general working capital of High River and pursuant to margin accounts in the regular course of business. As of the close of business on September 17, 2004, the aggregate purchase price of 10,000 Shares purchased by Ms. Golden was $167,706.15 (excluding commissions). The source of funding for the purchase of these Shares were personal funds of Ms. Golden. Item 4. Purpose of Transaction Item 4 is hereby amended to add the following: On September 10, 2004, the Registrants met with representatives of the Issuer's management including the Chief Executive Officer, Robert J. Coury. At the meeting, the parties discussed their positions regarding the proposed merger with King. The meeting did not result in any agreements, arrangements or understandings between the parties. Subsequent to the meeting, Mr. Icahn and Mr. Coury communicated further and scheduled another meeting. SECURITY HOLDERS ARE ADVISED TO READ THE PROXY STATEMENT AND OTHER DOCUMENTS RELATED TO SOLICITATION OF PROXIES BY MR. ICAHN AND HIS AFFILIATES FROM THE STOCKHOLDERS OF MYLAN LABORATORIES INC. FOR USE AT ITS SPECIAL MEETING WHEN AND IF THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. WHEN AND IF COMPLETED, A DEFINITIVE PROXY STATEMENT AND A FORM OF PROXY WILL BE MAILED TO STOCKHOLDERS OF MYLAN LABORATORIES INC. AND WILL BE AVAILABLE AT NO CHARGE AT THE SECURITIES AND EXCHANGE COMMISSION'S WEBSITE AT HTTP://WWW.SEC.GOV. Item 5. Interest in Securities of the Issuer (a) As of the close of the business day on September 17, 2004, the Registrants may be deemed to beneficially own, in the aggregate, 23,906,800 Shares, representing approximately 8.90% of the Issuer's outstanding Shares (based upon 268,733,386 Shares stated to be outstanding as of August 3, 2004 by the Issuer in the Issuer's Form 10Q filed with the Securities and Exchange Commission on August 9, 2004). (b) Each of High River and Ms. Golden has sole voting power and sole dispositive power with regard to 23,906,800 Shares and 10,000 Shares, respectively. Each of Barberry, Hopper and Mr. Icahn has shared voting power and shared dispositive power with regard to all of the 23,906,800 Shares beneficially owned by High River. Each of Barberry, Hopper and Mr. Icahn, by virtue of their relationships to High River (as disclosed in Item 2), may be deemed to beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares, which High River beneficially owns. Each of Mr. Icahn, Hopper and Barberry disclaims beneficial ownership of such Shares for all other purposes. Mr. Icahn, by virtue of his relationship to Ms. Golden (as disclosed in Item 2), may be deemed to beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares, which Ms. Golden beneficially owns. Mr. Icahn disclaims beneficial ownership of such Shares. (c) The following table sets forth all transactions with respect to the Shares effected since the most recent filing on Schedule 13D by the Registrants with respect to the Shares. All such transactions were effected in the open market, the table excludes commissions paid. No. of Shares Price Name Date Purchased Per Share ------------------------------- ---------------------------- ----------------------------- ---------------------------- ------------------------------- ---------------------------- ----------------------------- ---------------------------- High River 9/13/04 1,000,000 19.0014 ------------------------------- ---------------------------- ----------------------------- ---------------------------- ------------------------------- ---------------------------- ----------------------------- ---------------------------- High River 9/14/04 1,030,000 19.1187 ------------------------------- ---------------------------- ----------------------------- ---------------------------- ------------------------------- ---------------------------- ----------------------------- ---------------------------- High River 9/15/04 589,600 18.9449 ------------------------------- ---------------------------- ----------------------------- ---------------------------- ------------------------------- ---------------------------- ----------------------------- ---------------------------- High River 9/16/04 1,750,000 19.3520 ------------------------------- ---------------------------- ----------------------------- ---------------------------- ------------------------------- ---------------------------- ----------------------------- ---------------------------- High River 9/17/04 1,225,000 19.4432 ------------------------------- ---------------------------- ----------------------------- ---------------------------- SIGNATURE After reasonable inquiry and to the best of each of the undersigned knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: September 17, 2004 BARBERRY CORP. By: /s/ Edward E. Mattner Name: Edward E. Mattner Title: Authorized Signatory HOPPER INVESTMENTS LLC By: BARBERRY CORP., Sole Member By: /s/ Edward E. Mattner Name: Edward E. Mattner Title: Authorized Signatory HIGH RIVER LIMITED PARTNERSHIP By: HOPPER INVESTMENTS LLC, General Partner By: BARBERRY CORP., Sole Member By: /s/ Edward E. Mattner Name: Edward E. Mattner Title: Authorized Signatory /s/ Carl C. Icahn CARL C. ICAHN /s/ Gail Golden GAIL GOLDEN [Signature Page of Amendment No. 1 to Schedule 13D with respect to Mylan]