Exhibit 2(7) WARRANT OPTION AGREEMENT THIS AGREEMENT made as of the 19th day of May, 1998. BETWEEN: THE LIVERPOOL LIMITED PARTNERSHIP, A BERMUDA LIMITED PARTNERSHIP AND WESTGATE INTERNATIONAL, L.P., A CAYMAN LIMITED PARTNERSHIP (herein respectively referred to "Liverpool" and "Westgate" or collectively as the "Optionor") - and - RED REEF LIMITED, A BODY CORPORATE GOVERNED BY THE LAWS OF THE BRITISH VIRGIN ISLANDS (herein referred to as the "Optionee") WHEREAS: A. The Optionor holds Warrants (as hereinafter defined) which entitle the holders thereof to acquire an aggregate of 12,500,000 common shares of the share capital of the Corporation (as hereinafter defined); and B. The Optionor wishes to grant the Optionee an option to purchase the Warrants. NOW THEREFORE THIS AGREEMENT WITNESSES that in consideration of the premises and mutual covenants hereinafter set forth, and for other valuable consideration, the parties hereto have agreed as follows: ARTICLE ONE DEFINITIONS 1.01 In this Agreement the following terms shall have the following meanings: A. "Agreement" means this agreement made as of the date first written above, among the Optionor and the Optionee, and the expressions "above", "below", "herein", "hereof" and similar expressions refer to this Agreement. B. "Corporation" means Xenotech Inc. and any successor or continuing corporation resulting from any form of corporate reorganization. C. "Covered Shares" means those Shares of the Corporation, as defined in the Registration Rights Agreement. D. "Expiration Date" means May 5, 2000. E. "Option Date" means August 17, 1998. F. "Option Warrants" means the Warrants the Optionee is entitled to purchase under the Warrant Option. G. "Registration Rights Agreement" means the Registration Rights Agreement entered into as of May 19, 1998, between Xenotech, Liverpool and Westgate. H. "SEC" means the U.S. Securities and Exchange Commission. I. "Warrant Option" means an option to purchase the 12,500,000 Warrants held by the Optionor pursuant to this Agreement and includes any portion of that option. J. "Warrants" means the common share purchase warrants evidenced by the warrant certificates attached as Schedule "A" and Schedule "B" hereto registered in the names of Liverpool and Westgate respectively. Each Warrant entitles the holder to acquire one (1) common share of the capital of the Corporation upon payment of $0.40 per share on or before May 15, 2000. 1.02 In this Agreement, the masculine gender shall include the feminine gender and the singular shall include the plural and vice versa wherever the context requires. 1.03 All dollar amounts stated herein are in Canadian currency. ARTICLE TWO WARRANT OPTION 2.01 The Optionor hereby grants to the Optionee, subject to the terms and conditions hereinafter set out, an irrevocable option to purchase the Option Warrants, at any time or from time to time after the Option Date and on or before the Expiration Date on the following basis: (a) 4,500,000 Warrants, at an exercise price of $0.01 per Warrant; (b) 4,000,000 Warrants, at an exercise price of $0.20 per Warrant; and (c) the remaining 4,000,000 Warrants, at an exercise price of $0.40 per Warrant. -2- 2.02 Each of Westgate and Liverpool hereby agree to tender an aggregate of the number of the Warrants purchased by the Optionee pursuant to Article 4 of this Agreement. 2.03 At 4:30 p.m. Calgary time, on the Expiration Date, the Warrant Option shall forthwith expire and terminate and be of no further force or effect whatsoever as to such of the Option Warrants in respect of which the Warrant Option hereby granted have not then be exercised. 2.04 The Warrant Option granted pursuant to Article 2.01 above may only be exercised by the Optionee in the event that: (a) the Common Shares of the Corporation are listed and trading on the NASDAQ National Market or the NASDAQ Small Cap Market; (b) and the Common Shares of the Corporation are registered under the US Securities Exchange Act of 1934, as amended, and (c) the Covered Shares are "US Registered" (as defined in Section 3(a) of the Registration Rights Agreement). ARTICLE THREE MATERIAL CHANGE 3.01 In the event that, prior to the Expiration Date or exercise in full of the Warrant Option, the outstanding share capital of the Corporation shall be subdivided or consolidated into a greater or lesser number of common shares and Warrants, or, in the event of the payment of a stock dividend by the Corporation, or in the event that all of the shareholders of the Corporation are granted the right to purchase additional common shares of the share capital of the Corporation, the number and exercise price of Option Warrants remaining subject to the Warrant Option hereunder shall be increased or reduced accordingly, as the case may be. ARTICLE FOUR EXERCISE OF THE WARRANT OPTION 4.01 The Warrant Option may be exercised by the Optionee from time to time in whole or in part, in accordance with the provisions hereof by delivery of the option exercise form attached hereto as Schedule "C" to the Optionors and by tendering the payment therefor by wire or by certified cheque to the Corporation's counsel in trust, against delivery of certificates representing the Warrants to be acquired upon such exercise of the Warrant Option. 4.02 Upon receiving the option exercise form attached hereto as Schedule "C": (a) Liverpool agrees to forthwith deliver a certificate evidencing Warrants and provide the Corporation with irrevocable instructions to cancel the said certificate and reissue: (i) certificates evidencing one-half of the number of Warrants indicated upon the exercise form tendered by the Optionee pursuant to Article 4.01 hereof registered in accordance with the instructions provided by the Optionee; and -3- (ii) a certificate evidencing the balance of the Warrants, if any, not registered pursuant to Article 4.02(a)(i), registered in accordance with the instructions of Liverpool, which shall be delivered along with the proceeds of the exercise in accordance with the instructions of Liverpool, without deduction or setoff. (b) Westgate agrees to forthwith deliver a certificate evidencing Warrants and provide the Corporation with irrevocable instruction to cancel the said certificate and reissue: (i) certificates evidencing one-half of the number of Warrants indicated upon the exercise form tendered by the Optionee pursuant to Article 4.01 hereof registered in accordance with the instructions thereby given; and (ii) a certificate evidencing the balance of the Warrants, if any, not registered pursuant to Article 4.02(b)(i), registered in accordance with the instructions of Westgate, which shall be delivered along with the proceeds of the exercise in accordance with the instructions of Westgate, without deduction or setoff. ARTICLE FIVE GENERAL 5.01 Any notice or other communication required or permitted to be given under this Agreement shall be in writing and may be delivered personally or sent by fax, addressed: If to the Optionor: The Liverpool Limited Partnership c/o A.S. & K. Services Ltd. P.O. Box HM 1179 Hamilton, Bermuda HMEX Attn: Ms. Deborah Hendrickson Fax: 011-441-295-5328 Westgate International, L.P. c/o Midland Bank Trust Corporation (Cayman) Limited P.O. Box 1109 Mary Street, Grand Cayman Cayman Islands, BWI Attn: Mr. Greg Taylor Fax. (809) 949-7634 -4- Copy to: Richard Mansouri Stonington Management Corp. 712 - 5th Avenue, 36th Floor New York, New York 10019 Fax: (212) 974-2092 If to the Optionee: Red Reef Limited P.O. Box 3152, Road Town, Tortola, British Virgin Islands Fax: 011 44 1481 710091 Copy to: Xenotech, Inc. c/o Ogilvie and Company 1600 Canada Place 407 2nd Street SW Calgary, Alberta T2P 2Y3 Attn: Ms. Sara-Lane Sirey Fax: (403) 262-7896 Any such notice or other communication given as aforesaid shall be deemed to have been effectively given, if sent by fax or other similar form of telecommunications, on the next business day following such transmission or, if delivered, to have been received on the date of such delivery. Any party may change its address for service from time to time by notice given in accordance with the foregoing and any subsequent notice shall be sent to the party as its changed address. 5.02 The parties hereto covenant that they shall and will from time to time and at all times hereafter do and perform all such acts and things and execute all such additional documents as may be required to give effect to the terms and intention of this Agreement. 5.03 This Agreement supersedes all other agreements, documents, writings and verbal understandings among the parties relating to the subject matter hereof and represents the entire agreement between the parties relating to the subject matter hereof. 5.04 Subject to the other provisions hereof, this Agreement shall enure to the benefit of and be binding upon the parties hereto and their respective heirs, executors, administrators, successors and permitted assigns. -5- 5.05 This Agreement may not be assigned or transferred by the Optionee, except to an affiliated entity or a director, officer or employee of the Corporation. 5.06 Time shall be of the essence of this Agreement. 5.07 This Agreement shall be governed by and construed in accordance with the laws of the Province of Alberta and the parties hereto attorn to the jurisdiction of the courts of the Province of Alberta. 5.08 This Agreement may be executed in several counterparts and by original or by facsimile signature, each of which when so executed shall be deemed to be an original, and such counterparts together shall constitute one and the same instrument and, notwithstanding their date of execution, shall be deemed to bear the date as of the date above written. IN WITNESS WHEREOF the parties hereto have executed this Agreement as of the day and year first above written. THE LIVERPOOL LIMITED PARTNERSHIP BY: LIVERPOOL ASSOCIATES, LTD. GENERAL PARTNER BY: --------------------------------- PAUL SINGER, PRESIDENT WESTGATE INTERNATIONAL, L.P. BY: MARTLEY INTERNATIONAL, INC. ATTORNEY-IN-FACT BY: --------------------------------- PAUL SINGER, PRESIDENT RED REEF LIMITED PER: - ------------------------------------ -6- OPTION EXERCISE FORM TO: WESTGATE INTERNATIONAL, L.P. C/O MIDLAND BANK TRUST CORPORATION (CAYMAN) LIMITED P.O. BOX 1109, MARY STREET GRAND CAYMAN, CAYMAN ISLANDS BRITISH WEST INDIES ATTENTION: GREG TAYLOR FAX: (345) 949-7634 AND: THE LIVERPOOL LIMITED PARTNERSHIP C/O A.S. & K. SERVICES LTD. P.O. BOX HM 1179 HAMILTON, BERMUDA HMEX ATTENTION: DEBORAH HENDRICKSON FAX. (441) 295-5328 COPY TO: RICHARD MANSOURI STONINGTON MANAGEMENT CORP. 712 - 5TH AVENUE, 36TH FLOOR NEW YORK, NEW YORK 10019 FAX: (212) 974-2092 Red Reef Limited hereby exercises the right to purchase _______________________ Warrants of Xenotech Inc. at purchase price of CDN$_________________ per Warrant, payment for which is submitted with this Exercise Form pursuant to and in accordance with the terms and conditions of the Warrant Option Agreement made as of May 15, 1998 among Westgate International L.P., The Liverpool Limited Partnership and Red Reef Limited. The Optionee hereby directs that the Warrants hereby acquired by this Exercise Form be issued and delivered as follows: NAME: ---------------------------------------------------------- ADDRESS IN FULL: ---------------------------------------------------------- ---------------------------------------------------------- NUMBER OF WARRANTS BEING ACQUIRED: ---------------------------------------------------------- -7- TOTAL EXERCISE PRICE TENDERED: ---------------------------------------------------------- ---------------------------------------------------------- DATED: - --------------------------------------- (Signature of Optionee) -8-