Item 8.01 of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

(c)	Exhibits   The following exhibit is being furnished, not filed, herewith pursuant to Item 8.01 of Form 8-K:
	99.1           Press release, dated July 30, 2008, entitled “Cabot Microelectronics Corporation Receives Ruling in Markman Hearing in Patent Infringement Enforcement Action Against DuPont Air Products NanoMaterials, LLC.”

SIGNATURE

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.

	CABOT MICROELECTRONICS CORPORATION
Date: July 30, 2008	By:	/s/ WILLIAM S. JOHNSON
		William S. Johnson
		Vice President and Chief Financial Officer
		[Principal Financial Officer]

 

 

INDEX TO EXHIBITS

Exhibit Number	Title
99.1	Press release, dated July 30, 2008, entitled “Cabot Microelectronics Corporation Receives Ruling in Markman Hearing in Patent Infringement Enforcement Action Against DuPont Air Products NanoMaterials, LLC.”

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