Patheon 8-K/A Financial Statements and Exhibits

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

Patheon Inc.

Durham, North Carolina

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-184241) and Form S-8 (No. 333-174871) of Patheon Inc. of our report dated March 26, 2012, relating to the consolidated financial statements of Sobel USA Inc., which is incorporated by reference in this Form 8-K/A.

/s/ Smith Leonard PLLC

High Point, North Carolina

March 1, 2013