TORONTO, Oct. 9 /CNW/ - Patheon Inc. (TSX: PTI) announced today that the Toronto Stock Exchange (“TSX”) has accepted Patheon’s Notice of Intention to purchase up to 4.6 million of its restricted voting shares, representing approximately 5% of the 92,958,688 shares currently outstanding as of October 3, 2007, by way of normal course purchases on the Toronto Stock Exchange. In addition, Patheon’s aggregate purchase of shares during any trading day will not exceed 75,457 shares, being 25% of the average daily trading volume of the shares based on their trading volume on the TSX for the most recently completed six calendar months preceding the date of the Notice of Intention, subject to Patheon’s ability to make “block” purchases through the facilities of the TSX in accordance with the TSX rules.