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
[X]   Definitive Additional Materials
[ ]   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
                               Jose Maria Alapont
    (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:




                             FOR IMMEDIATE RELEASE

                     ISS SUPPORTS CARL ICAHN'S NOMINEES FOR
               BOARD OF DIRECTORS OF MENTOR GRAPHICS CORPORATION

     Recommends that shareholders do not vote management's white proxy card


New York, New York, May 3, 2011
Contact: Susan Gordon (212) 702-4309

Institutional Shareholder Services ("ISS"), the leading independent proxy voting
advisory  firm,  has  recommended  support  for  two of Carl Icahn's nominees to
Mentor Graphics' board of directors. ISS recommended that shareholders of Mentor
Graphics  vote  FOR  Mr.  Jose  Maria  Alapont  and Mr. Gary Meyers on the Icahn
Group's  GOLD  proxy  card.

In announcing its recommendation, ISS stated:

 "The dissidents have shaped a compelling case for change around the company's
     long underperformance on cost, margin, and other elements of financial
                                 performance."

"On balance, we believe shareholder support for dissident nominees Alapont, who
has long executive experience managing cost structure in the face of significant
  competitive pressure, and Meyers, whose industry experience as executive and
 director which will likely add a compelling strategic insight, is warranted."

  "Given that the dissidents have made a compelling case that THE COMPANY HAS
 UNDERPERFORMED BOTH ITS PEERS AND ITS POTENTIAL DURING THE LONG TENURE OF THE
  CURRENT BOARD AND MANAGEMENT TEAM, it seems likely that CHANGE AT THE BOARD
                            LEVEL IS WARRANTED." (1)

The  Icahn  Group thanks ISS for its incisive report and recommending two of our
nominees.  It  is  time  to  send a signal to this entrenched Board. We strongly
encourage  all  shareholders  to  vote  for ALL THREE Icahn nominees on the GOLD
proxy  card.

  If you have any questions or require any assistance in executing your proxy,
                                  please call:
                             D.F. King & Co., Inc.
                   Shareholders call tollfree: (800) 7143313
                 Banks and Brokerage Firms call: (212) 2695550


ON  APRIL  1,  2011,  CARL  C. ICAHN AND AFFILIATES ("ICAHN") FILED A DEFINITIVE
PROXY  STATEMENT  WITH  THE  SECURITIES  AND  EXCHANGE COMMISSION (THE "SEC") IN
CONNECTION  WITH  THE  UPCOMING  2011  ANNUAL  MEETING OF SHAREHOLDERS OF MENTOR
GRAPHICS.  SHAREHOLDERS  ARE ADVISED TO READ ICAHN'S DEFINITIVE PROXY STATEMENT,
AND  ANY OTHER RELEVANT DOCUMENTS FILED BY ICAHN WITH THE SEC, BEFORE MAKING ANY
VOTING  OR  INVESTMENT  DECISION BECAUSE THEY CONTAIN IMPORTANT INFORMATION. THE
DEFINITIVE  PROXY  STATEMENT  IS,  AND  ANY  OTHER  RELEVANT DOCUMENTS AND OTHER
MATERIAL  FILED  BY  ICAHN WITH THE SEC CONCERNING MENTOR GRAPHICS WILL BE, WHEN
FILED,  AVAILABLE  FREE  OF  CHARGE  AT  HTTP://WWW.SEC.GOV  AND
WWW.READMATERIAL.COM/MENTOR.  IN  ADDITION, COPIES OF THE PROXY MATERIALS MAY BE
REQUESTED  FROM  ICAHN'S PROXY SOLICITOR, D.F. KING & CO., INC., BY TELEPHONE AT
(800)  7143313.

_________________________
(1)  Permission  to  use  these quotes was neither sought nor obtained (emphasis
     added).