8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT PURSUANT

TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

June 30, 2005

Date of report

PATTERSON COMPANIES, INC.

(Exact Name of Registrant as Specified in Its Charter)

Minnesota	0-20572	41-0886515
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

1031 Mendota Heights Road

St. Paul, Minnesota 55120

(Address of Principal Executive Offices, including Zip Code)

(651) 686-1600

(Registrant’s Telephone Number, including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01 OTHER EVENTS

On July 8, 2005, Patterson Companies, Inc. will issue a press release announcing the extension of its exclusive agreement for the North American distribution of the CEREC 3D chairside restorative system with Sirona Dental Systems GmbH. This agreement was entered into on June 30, 2005. Further information, including a description of the terms and conditions of the agreement, is included in the press release attached hereto as Exhibit 99, which is incorporated by reference herein.

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS

(c) EXHIBITS

99 Press release of Patterson Companies, Inc., dated July 8, 2005.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	PATTERSON COMPANIES, INC.
Date: July 7, 2005	By:	/s/ R. Stephen Armstrong
		R. Stephen Armstrong
		Executive Vice President, Treasurer and Chief Financial Officer
		(Principal Financial Officer and Principal
		Accounting Officer)

EXHIBIT INDEX

Exhibit Number	Description
99	Press release of Patterson Companies, Inc., dated July 8, 2005.

EX-99

Exhibit 99

Patterson Companies Announces Extension

Of Exclusive Distribution Agreement With Sirona Dental Systems

For CEREC^® Dental Restorative Systems

St. Paul, MN—July 8, 2005—Patterson Companies, Inc. (Nasdaq: PDCO) today announced that its dental unit, Patterson Dental, has extended its exclusive North American distribution agreement with Sirona Dental Systems GmbH for Sirona’s CEREC 3D dental restorative system.

The exclusivity agreement extends the current relationship between Patterson Dental and Sirona by 10 years. Patterson Dental, which also will continue to provide customer support and training for CEREC equipment, has been the exclusive North American distributor for these advanced technology dental systems since 1998.

Patterson Dental’s sales of the CEREC 3D system increased 39% in fiscal 2005, reflecting clinical acceptance of this new technology equipment that strengthens dental office productivity while improving clinical outcomes. Patterson paid a $100 million exclusivity fee for the extended agreement with Sirona.

About Patterson Companies, Inc.

Patterson Companies, Inc. is a value-added distributor serving the dental, companion-pet veterinarian and rehabilitation supply markets.

Patterson Dental

As Patterson’s largest business, Patterson Dental provides a virtually complete range of consumable dental products, equipment and software, turnkey digital solutions and value-added services to dentists and dental laboratories throughout North America.

Webster Veterinary

Webster Veterinary is the nation’s second largest distributor of consumable veterinary supplies, equipment, diagnostic products, vaccines and pharmaceuticals to companion-pet veterinary clinics.

Patterson Medical (formerly AbilityOne Corporation)

Patterson Medical is the world’s leading distributor of rehabilitation supplies and non-wheelchair assistive patient products to the physical and occupational therapy markets.

About Sirona Dental Systems GmbH

Sirona Dental Systems GmbH is the world’s leading manufacturer of high technology dental equipment. Sirona (formerly Siemens Dental Systems) has served equipment dealers and dentists worldwide for more than 120 years. Sirona manufacturers a complete line of dental products, including CAD/CAM restoration equipment, digital and film-based intraoral, panoramic and cephalometric X-ray imaging systems and dental treatment centers. Sirona designs, develops and manufactures all products in Germany, and is committed to creating and supporting the most advanced dental technologies in the marketplace. Sirona’s worldwide headquarters is located in Bensheim, Germany, with North American headquarters in Charlotte, North Carolina.

#             #             #

This release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements are information of a non-historical nature and

are subject to risks and uncertainties that are beyond the Company’s ability to control. The Company cautions shareholders and prospective investors that the following factors, among others, may cause actual results to differ materially from those indicated by the forward-looking statements: competition within the dental, veterinary, and rehabilitative and assistive living supply industries; changes in the economics of dentistry, including reduced growth in expenditures by private dental insurance plans, the effects of economic conditions and the effects of healthcare

reform, which may affect future per capita expenditures for dental services and the ability and willingness of dentists to invest in high-technology products; the effects of healthcare related legislation and regulation which may affect expenditures or reimbursements for rehabilitative and assistive products; changes in the economics of the veterinary supply market, including reduced growth in per capita expenditures for veterinary services and reduced growth in the number of households owning pets; the ability of the Company to maintain satisfactory relationships with its sales force; unforeseen operating risks; risks associated with the dependence on manufacturers of the Company’s products; and the ability of the Company to successfully integrate the recent acquisitions into its existing business. Forward-looking statements are qualified in their entirety by the cautionary language set forth in the Company’s filings with the Securities and Exchange Commission.

For additional information contact:

R. Stephen Armstrong	Richard G. Cinquina
Executive Vice President & CFO	Equity Market Partners
651/686-1600	904/261-2210