CMC 8_K filed December 12, 2006
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


Date of Report (date of earliest event reported):
December 12, 2006


Cabot Microelectronics Corporation
(Exact name of registrant as specified in its charter)

Delaware
  
000-30205
  
36-4324765
(State or other jurisdiction of incorporation)
  
(Commission File Number)
  
(IRS Employer Identification)

870 Commons Drive, Aurora, Illinois
 
60504
(Address of principal executive offices)
  
(Zip Code)

(630) 375-6631
(Registrant’s telephone number, including area code)

Not applicable
(Former name or former address, if changed since last report)

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:

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

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

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

o  
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 December 12, 2006, Cabot Microelectronics Corporation issued a press release entitled “Cabot Microelectronics Announces Plans to Pursue Patent Infringement Enforcement Action against DuPont Air Products NanoMaterials LLC.” A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by reference.
 
This information is being furnished pursuant to 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.
 

Item 9.01 Financial Statements and Exhibits.


(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 December 12, 2006, entitled “Cabot Microelectronics Announces Plans to Pursue 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: December 12, 2006
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 December 12, 2006, entitled “Cabot Microelectronics Announces Plans to Pursue Patent Infringement Enforcement Action against DuPont Air Products NanoMaterials LLC.”