1 Exhibit 3.1 FEDERAL IDENTIFICATION NO. 04-2897945 JSD - ---------- Examiner WB N/A - ---------- Name Approved THE COMMONWEALTH OF MASSACHUSETTS WILLIAM FRANCIS GALVIN Secretary of the Commonwealth One Ashburton Place, Boston, Massachusetts 02108-1512 ARTICLES OF AMENDMENT (GENERAL LAWS, CHAPTER 156B, SECTION 72) We, D. Verne Sharma , *President --------------------------------------------------------------- and James A. Lightman , *Clerk / *Assistant Clerk, ----------------------------------------------- of Summit Technology, Inc. -------------------------------------------------------------------------- , (Exact name of corporation) located at 21 Hickory Drive, Waltham, MA 02154 ------------------------------------------------------------------- , (Street address of corporation in Massachusetts) certify that these Articles of Amendment affecting articles numbered: Three (3) - -------------------------------------------------------------------------------- (Number those articles 1, 2, 3, 4, 5 and/or 6 being amended) of the Articles of Organization were duly adopted at a meeting held on 4/29 , 1999, by vote of: - ----------- -- 27,404,640 shares of Common, $.01 par value of 31,153,765 shares outstanding, - ---------- ------------------------- ---------- (type, class & series, if any) shares of of shares outstanding, and - --------- ----------------------- --------- (type, class & series, if any) shares of of shares outstanding, - --------- -------------------------- ---------- (type, class & series, if any) (1)**being at least a majority of each type, class or series outstanding and entitled to vote thereon: / or (2)**being at least two-thirds of each type, class or series outstanding and entitled to vote thereon and of each type, class or series of stock whose rights are adversely affected thereby: *Delete the inapplicable words. **Delete the inapplicable clause. (1) For amendments adopted pursuant to Chapter 156B, Section 70. (2) For amendments adopted pursuant to Chapter 156B, Section 71. Note: If the space provided under any article or item on this form is insufficient, additions shall be set forth on one side only of separate 8 1/2 x 11 sheets of paper with a left margin of at least 1 inch. Additions to more than one article may be made on a single sheet so long as each article requiring each addition is clearly indicated. 4 - ---------- P.C. 2 To change the number of shares and the par value (if any) of any type, class or series of stock which the corporation is authorized to issue, fill in the following: The total presently authorized is: WITHOUT PAR VALUE STOCKS WITH PAR VALUE STOCKS - -------------------------------- ------------------------------------------------ TYPE NUMBER OF SHARES TYPE NUMBER OF SHARES PAR VALUE - -------------------------------- ------------------------------------------------ Common: Common: 60,000,000 $0.01 - -------------------------------- ------------------------------------------------ - -------------------------------- ------------------------------------------------ Preferred: Preferred: 5,000,000 $0.01 - -------------------------------- ------------------------------------------------ - -------------------------------- ------------------------------------------------ Change the total authorized to: WITHOUT PAR VALUE STOCKS WITH PAR VALUE STOCKS - -------------------------------- ------------------------------------------------ TYPE NUMBER OF SHARES TYPE NUMBER OF SHARES PAR VALUE - -------------------------------- ------------------------------------------------ Common: Common: 100,000,000 $0.01 - -------------------------------- ------------------------------------------------ - -------------------------------- ------------------------------------------------ Preferred: Preferred: 5,000,000 $0.01 - -------------------------------- ------------------------------------------------ - -------------------------------- ------------------------------------------------ 3 The foregoing amendment(s) will become effective when these Articles of Amendment are filed in accordance with General Laws, Chapter 156B, Section 6 unless these articles specify, in accordance with the vote adopting the amendment, a later effective date not more than thirty days after such filing, in which event the amendment will become effective on such later date. Later effective date: ---------------------------- SIGNED UNDER THE PENALTIES OF PERJURY, this 29th day of April, 1999. /s/ D. Verne Sharma - -----------------------------------------, *President D. Verne Sharma /s/ James A. Lightman - -----------------------------------------, *Clerk/*Assistant Clerk James A. Lightman *Delete the inapplicable words. 4 THE COMMONWEALTH OF MASSACHUSETTS ARTICLES OF AMENDMENT (GENERAL LAWS, CHAPTER 156B, SECTION 72) ============================================== I hereby approve the within Articles of Amendment and, the filing fee in the amount of $40,000.00 having been paid, said articles are deemed to have been filed with me this 30th day of April 1999. Effective date: ---------------------- /s/ William Francis Galvin WILLIAM FRANCIS GALVIN Secretary of the Commonwealth TO BE FILLED IN BY CORPORATION PHOTOCOPY OF DOCUMENT TO BE SENT TO: Mary C. Kelly Burke ---------------------------------------------------- Ropes & Gray ---------------------------------------------------- One International Place, Boston, MA 02110-2624 ---------------------------------------------------- Telephone: 617-951-7545 ------------------------------------------