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`PATENT
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`In re Application of:
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`Alain RAYNAUD et a1.
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`U.S. Patent No.: 6,240,376
`Issued: May 29, 2001
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`Serial No.: 09/127,587
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`Filed: July 31, 1998
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`For: METHOD AND APPARATUS FOR
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`GATE-LEVEL SIMULATION OF
`SYNTHESIZED REGISTER TRANSFER
`LEVEL DESIGNS WITH SOURCE-
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`LEVEL DEBUGGING
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`vvvvvvvvvvvvvvv
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`Examiner: D. Sergent
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`Group Art Unit: 2123
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`Attorney Docket: 003921 .00067
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`REVOCATION AND POWER OF ATTORNEY
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`The Honorable Commissioner for Patents
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`Washington, DC. 20231
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`Dear Sir:
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`By Virtue ‘ of an Assignment recorded in the U.S. Patent and Trademark Office on
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`September 21, 1998, at Reel 9466, Frame 0779, Mentor Graphics Corporation is the owner of all
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`right, title, and interest in and to the above-identified patent.
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`On behalf of the assignee, Mentor Graphics Corporation, I hereby revoke any and all
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`previous powers of attorney and hereby appoint, with full power of substitution and revocation,
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`the attorneys at Customer Number 22907 (Banner & Witcoff, Ltd), both jointly and severally, to
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`transact all business in the U.S. Patent and Trademark Office in connection with the above-
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`
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`US. Patent No. 6,240,376
`Atty. Dkt. No. 003921.00067
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`All correspondence and telephone communications should be addressed to:
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`Customer Number 22907
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`Dated: *ZL
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`Q) '
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`Mentor Graphics Corporation
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`By:
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`Senior Patent Counsel
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