TORONTO, Dec. 18, 2012 /PRNewswire/ - Patheon Inc. (TSX: PTI) ("Patheon" or the "Company") today reminded holders of its restricted voting shares that the Company's current rights offering will expire in 10 days, on December 28, 2012. Rights certificates were mailed on December 3, 2012 to each registered holder of restricted voting shares resident in Canada and the U.S. as of November 27, 2012. Under the terms of the rights offering, all registered holders of rights must validly deliver their completed rights certificates to the subscription agent, Computershare Investor Services Inc., before the expiry deadline on December 28, 2012, at 5:00 p.m. ( Toronto time), accompanied by payment of the total applicable subscription price, in order to exercise their subscription rights. The rights will cease trading on the Toronto Stock Exchange at noon ( Toronto time) on December 28, 2012. An earlier deadline will apply for rights held through securities brokers, dealers, banks, trust companies or other custodians that participate directly or indirectly in the book-entry systems administered by CDS Clearing and Depository Services Inc. or the Depository Trust Company. Holders of such rights should contact their broker, dealer, bank, trust company or other custodian to determine the deadlines applicable to them. The Company has filed a registration statement (including a prospectus) with the U.S. Securities and Exchange Commission (the "SEC") for the offering to which this communication relates. Before U.S. residents invest, they should read the prospectus in that registration statement and other documents the Company has filed with the SEC for more complete information about the Company and the offering. These documents are available for free by visiting EDGAR on the SEC web site at www.sec.gov. This offering is also being made by means of an offering circular in Canada. The Canadian offering circular is available on SEDAR. Copies of the offering circular or prospectus may also be obtained by contacting the Company by telephone at (919) 226-3200 or by email at firstname.lastname@example.org, or Computershare Investor Services Inc., the subscription agent, by telephone at 1-800-564-6253 or by email at email@example.com. About Patheon Inc. Patheon Inc. (TSX: PTI) is a leading global provider of contract development and manufacturing services to the global pharmaceutical industry. The Company provides the highest quality products and services to approximately 300 of the world's leading pharmaceutical and biotechnology companies. Patheon's services range from preclinical development through commercial manufacturing of a full array of solid and sterile dosage forms.