FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * WILTZ JAMES W   2. Issuer Name and Ticker or Trading Symbol PATTERSON COMPANIES, INC. [PDCO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) PATTERSON COMPANIES, INC., 1031 MENDOTA HEIGHTS ROAD 3. Date of Earliest Transaction (Month/Day/Year) 05/03/2010 (Street) ST. PAUL, MN 55120 4. If Amendment, Date Original Filed(Month/Day/Year) 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 Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/03/2010(1)   S   50,000 D $ 32.0201 405,836 I (2) Revocable Trust (2) Common Stock               126,982 D   Common Stock               9,550 I (3) Family Trust (3) Common Stock               99,166 I (4) GRAT (4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Forward Sale Contract (Obligation to Sell)

(5)

(5)

(5)

Common Stock

200,000

0

D

Employee Stock Options

(6)

(7)

(8)

Common Stock

147,468

147,468

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WILTZ JAMES W PATTERSON COMPANIES, INC. 1031 MENDOTA HEIGHTS ROAD ST. PAUL, MN 55120	X

Signatures

Matthew L. Levitt, by Power of Attorney		05/04/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(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 transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 16, 2009.
(2)	Revocable Trust of which the Reporting Person is the Settlor and Trustee.
(3)	In Trust for members of Reporting Person's Family.
(4)	Held by Grantor Retained Annuity Trust.
(5)	The Reporting Person (RP) entered into a prepaid forward sale contract with an unaffiliated third party buyer. The RP agreed to deliver to the buyer up to 200,000 shares on 12/29/2011, the maturity date of the contract. The RP received $4,408,248 as of the date of contract. The RP pledged 200,000 shares (Pledged Shares) to secure his obligations under the contract. The number of shares to be delivered to the buyer on the maturity date is as follows: (a) if the value per share on the maturity date (Maturity Price) is less than $24.92, the RP will deliver all the Pledged Shares; (b) if the Maturity Price is between $24.92 and $34.61, the RP will deliver shares equal to $24.92 divided by the Maturity Price times the number of Pledged Shares; and (c) if the Maturity Price is greater than $34.61, the RP will deliver shares equal to the Pledged Shares times the ratio of $24.92 plus Maturity Price less $34.61 divided by Maturity Price, or the cash equivalent.
(6)	Employee Stock Options granted as follows: 141,998 on 04/28/2003 at $19.97; and 5,470 on 4/26/2004 at $38.50.
(7)	Options exercisable as follows: 20,285 on April 28 for each year 2006-2012; and 5,470 on 4/26/2013.
(8)	All grants expire 10 years after grant date.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.