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`UNITED STATES PATENT AND TRADEMARK OFFICE
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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`PETROLEUM GEO-SERVICES INC.
` Petitioner
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` v.
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`WESTERNGECO LLC
` Patent Owner
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` Case No. IPR2014-00689
` Patent No. 7,293,520
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`PETITIONER’S UPDATED MANDATORY NOTICE
`UNDER 37 C.F.R. § 42.106(b)
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`In response to the Board’s authorization via conference call on August 4,
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`2014, Petitioner Petroleum Geo-Services Inc. respectfully submits this Updated
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`Mandatory Notice Under 37 C.F.R. § 42.106(b). Pursuant to the requirements of
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`35 U.S.C. § 312(a)(2) and 37 C.F.R. § 42.8(b)(1), relating to real parties in interest,
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`Petitioner lists the following:
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`• Petroleum Geo-Services Inc.;
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`• PGS Geophysical AS; and
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`• Petroleum Geo-Services ASA.
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`Dated: August 5, 2014
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` Respectfully submitted,
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`_/David Berl/____________
`David Berl
`Reg. No. 72,751
`Williams & Connolly, LLP
`725 12th St., NW
`Washington, DC 20005
`Telephone: 202-434-5491
`Facsimile: 202-434-5029
`Email: dberl@wc.com
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`Attorney for Petitioner
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