SCHEDULE 14A
                   Proxy Statement Pursuant to Section 14(a)
                     of the Securities Exchange Act of 1934
                               (Amendment No. __)


Filed  by  the  Registrant    [  ]

Filed  by  a  Party  other  than  the  Registrant    [x]

Check  the  appropriate  box:

[ ]     Preliminary  Proxy  Statement
[ ]     Confidential,  for  Use  of  the  Commission Only (as permitted by Rule
        14a-6(e)(2))
[ ]     Definitive  Proxy  Statement
[ ]     Definitive  Additional  Materials
[X]     Soliciting  Material  Pursuant  to   240.14a-12

                          Mentor Graphics Corporation
                (Name of Registrant as Specified In Its Charter)

                               Icahn Partners LP
                         Icahn Partners Master Fund LP
                        Icahn Partners Master Fund II LP
                       Icahn Partners Master Fund III LP
                         High River Limited Partnership
                             Hopper Investments LLC
                                 Barberry Corp.
                                Icahn Onshore LP
                               Icahn Offshore LP
                               Icahn Capital L.P.
                                   IPH GP LLC
                        Icahn Enterprises Holdings L.P.
                          Icahn Enterprises G.P. Inc.
                                 Beckton Corp.
                                 Carl C. Icahn
                                  Brett Icahn
                                David Schechter
                                  Gary Meyers
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment  of  Filing  Fee  (check  the  appropriate  box):

[X]     No  fee  required.

[ ]     Fee  computed on table below per Exchange Act Rule 14a-6(i)(4) and 0-11.

          1) Title of each class of securities to which transaction applies:

          2) Aggregate number of securities to which transaction applies:

          3) Per unit price or other underlying value of transaction computed
             pursuant to Exchange Act Rule 0-11 (set forth the amount on which
             the filing fee is calculated and state how it was determined):

          4) Proposed maximum aggregate value of transaction:

          5) Total fee paid:

[ ]     Fee  paid  previously  with  preliminary  materials.

[ ]     Check  box if any part of the fee is offset as provided by Exchange Act
        Rule  0-11(a)(2)  and  identify the filing for which the offsetting fee
        was paid previously.  Identify  the  previous filing by registration
        statement number, or the Form or Schedule and the date  of  its  filing.

          1) Amount Previously Paid:

          2) Form, Schedule or Registration Statement No.:

          3) Filing Party:

          4) Date Filed:



On  February  11, 2011, Carl C. Icahn and affiliated entities filed an amendment
to  their  Schedule 13D relating to Mentor Graphics Corporation, a copy of which
is  filed  herewith  as  Exhibit  1.

SECURITY  HOLDERS  ARE  ADVISED  TO READ THE PROXY STATEMENT AND OTHER DOCUMENTS
RELATED  TO THE SOLICITATION OF PROXIES BY CARL C. ICAHN AND HIS AFFILIATES FROM
THE  STOCKHOLDERS  OF  MENTOR  GRAPHICS  CORPORATION  FOR USE AT ITS 2011 ANNUAL
MEETING  WHEN  THEY  BECOME  AVAILABLE  BECAUSE  THEY  WILL  CONTAIN  IMPORTANT
INFORMATION,  INCLUDING  INFORMATION  RELATING TO THE PARTICIPANTS IN SUCH PROXY
SOLICITATION.  WHEN  COMPLETED, A DEFINITIVE PROXY STATEMENT AND A FORM OF PROXY
WILL  BE  MAILED TO STOCKHOLDERS OF MENTOR GRAPHICS CORPORATION AND WILL ALSO BE
AVAILABLE  AT  NO  CHARGE AT THE SECURITIES AND EXCHANGE COMMISSION'S WEBSITE AT
HTTP://WWW.SEC.GOV.  INFORMATION  RELATING  TO  THE  PARTICIPANTS  IN SUCH PROXY
SOLICITATION  IS  CONTAINED  IN  EXHIBIT  1.




                                                                       EXHIBIT 1


                        Amendment No. 10 to Schedule 13D

                                 [see attached]



                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                   Under the Securities Exchange Act of 1934
                               (Amendment No. 10)*

                          Mentor Graphics Corporation
                                (Name of Issuer)

                        Common Stock, without par value
                         (Title of Class of Securities)

                                   587200106
                                 (CUSIP Number)

                                  Marc Weitzen
                                Icahn Capital LP
                          767 Fifth Avenue, 47th Floor
                            New York, New York 10153
                                 (212) 702-4300
          (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                               February 11, 2011
            (Date of Event which Requires Filing of this Statement)

If  the filing person has previously filed a statement on Schedule 13G to report
the  acquisition  that  is  the subject of this Schedule 13D, and is filing this
schedule  because  of  Section 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check
the  following  box  /  /.

NOTE:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to  whom  copies  are  to  be  sent.

*The  remainder  of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent  amendment  containing  information  which  would  alter
disclosures  provided  in  a  prior  cover  page.

The information required on the remainder of this cover page shall not be deemed
to  be  "filed"  for the purpose of Section 18 of the Securities Exchange Act of
1934  ("Act") or otherwise subject to the liabilities of that section of the Act
but  shall  be  subject  to  all  other  provisions of the Act (however, see the
Notes).



                                  SCHEDULE 13D

Item 1. Security and Issuer

     The  Schedule  13D filed with the Securities and Exchange Commission on May
27,  2010  (the  "Initial  13D"),  by  the Reporting Persons with respect to the
shares  of  Common  Stock,  without  par  value (the "Shares"), issued by Mentor
Graphics Corporation (the "Issuer"), is hereby amended to furnish the additional
information  set  forth  herein.  All capitalized terms contained herein but not
otherwise  defined shall have the meanings ascribed to such terms in the Initial
13D.

Item 4. Purpose of Transaction.

     Item 4 of the Initial 13D is hereby amended to add the following:

     On  February  11,  2011,  the  Reporting  Persons delivered a letter to the
Issuer  (the  "Notification  Letter"),  notifying  the Issuer that the Reporting
Persons  intend  to  appear  at  the  2011  annual  meeting  of  the  Issuer's
shareholders,  in  person or by proxy, to nominate and seek to elect individuals
as  members of the board of directors of the Issuer and to propose certain other
business  described therein. A copy of the Notification Letter is filed herewith
as  an exhibit and incorporated herein by reference, and any descriptions herein
of  the  Notification Letter are qualified in their entirety by reference to the
Notification  Letter.

SECURITY  HOLDERS  ARE  ADVISED  TO READ THE PROXY STATEMENT AND OTHER DOCUMENTS
RELATED  TO THE SOLICITATION OF PROXIES BY CARL C. ICAHN AND HIS AFFILIATES FROM
THE  STOCKHOLDERS  OF  MENTOR  GRAPHICS  CORPORATION  FOR USE AT ITS 2011 ANNUAL
MEETING  WHEN  THEY  BECOME  AVAILABLE  BECAUSE  THEY  WILL  CONTAIN  IMPORTANT
INFORMATION,  INCLUDING  INFORMATION  RELATING TO THE PARTICIPANTS IN SUCH PROXY
SOLICITATION.  WHEN  COMPLETED, A DEFINITIVE PROXY STATEMENT AND A FORM OF PROXY
WILL  BE  MAILED TO STOCKHOLDERS OF MENTOR GRAPHICS CORPORATION AND WILL ALSO BE
AVAILABLE  AT  NO  CHARGE AT THE SECURITIES AND EXCHANGE COMMISSION'S WEBSITE AT
HTTP://WWW.SEC.GOV.

Item 6. Contracts, Arrangements, Understandings or Relationship with Respect to
Securities of the Issuer

The information set forth above in Item 4 is incorporated herein by reference.

Item 7. Material to be Filed as Exhibits

1. Notification Letter



                                   SIGNATURE

     After  reasonable  inquiry  and  to  the  best  of  each of the undersigned
knowledge and belief, each of the undersigned certifies that the information set
forth  in  this  statement  is  true,  complete  and  correct.

Dated:  February  11,  2011


ICAHN  PARTNERS  MASTER  FUND  LP
ICAHN  PARTNERS  MASTER  FUND  II  LP
ICAHN  PARTNERS  MASTER  FUND  III  LP
ICAHN  OFFSHORE  LP
ICAHN  PARTNERS  LP
ICAHN  ONSHORE  LP
BECKTON  CORP.
HOPPER  INVESTMENTS  LLC
BARBERRY  CORP.
HIGH  RIVER  LIMITED  PARTNERSHIP
     By:  Hopper  Investments  LLC,  general  partner

     By:  /s/  Edward  E.  Mattner
          ------------------------
          Name:  Edward  E.  Mattner
          Title:  Authorized  Signatory


ICAHN  CAPITAL  LP
     By:  IPH  GP  LLC,  its  general  partner
     By:  Icahn  Enterprises  Holdings  L.P.,  its  sole  member
By:  Icahn  Enterprises  G.P.  Inc.,  its  general  partner
IPH  GP  LLC
     By:  Icahn  Enterprises  Holdings  L.P.,  its  sole  member
By:  Icahn  Enterprises  G.P.  Inc.,  its  general  partner
ICAHN  ENTERPRISES  HOLDINGS  L.P.
     By:  Icahn  Enterprises  G.P.  Inc.,  its  general  partner
ICAHN  ENTERPRISES  G.P.  INC.

     By:  /s/  Dominick  Ragone
          ---------------------
          Name:  Dominick  Ragone
          Title:  Chief  Financial  Officer




/s/  Carl  C.  Icahn
- --------------------
CARL  C.  ICAHN



         [Signature Page of Schedule 13D - Mentor Graphics Corporation]