FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person *   Bigelow Peter Thomas 2. Date of Event Requiring Statement (Month/Day/Year) 04/26/2011 3. Issuer Name and Ticker or Trading Symbol PATHEON INC [PTI] (Last) (First) (Middle) 4721 EMPEROR BLVD, SUITE 200 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President North American Opera 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) DURHAM, NC 27703 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	  (1)	03/17/2017	Restricted Voting Shares	200,000	$ 2.56 (2)	D	Â
Employee Stock Option (right to buy)	  (3)	03/17/2020	Restricted Voting Shares	120,000	$ 2.56 (4)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Bigelow Peter Thomas 4721 EMPEROR BLVD SUITE 200 DURHAM, NC 27703	Â	Â	  President North American Opera	Â

Signatures

/s/ David S Field, Attorney-in-fact		04/26/2011
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The option vests in three equal annual installments on March 17, 2011, March 17, 2012, and March 17, 2013.
(2)	The exercise price was converted from C$2.59 using the noon rate of exchange of the Bank of Canada on the date of grant. The actual exercise price will be the Canadian dollar amount regardless of the exchange rate on the date of grant or of exercise.
(3)	The option vests in five equal annual installments on March 17, 2011, March 17, 2012, March 17, 2013, March 17, 2014 and March 17, 2015
(4)	The exercise price was converted from C$2.59 using the noon rate of exchange of the Bank of Canada on the date of grant. The actual exercise price will be the Canadian dollar amount regardless of the exchange rate on the date of grant or of exercise.
  Remarks: Exhibit List Exhibit 24 - Power of Attorney

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