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Case 1:17-cv-00770-JDW Document 230-14 Filed 10/05/23 Page 1 of 5 PageID #: 24125
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`Exhibit 91
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`Case 1:17-cv-00770-JDW Document 230-14 Filed 10/05/23 Page 2 of 5 PageID #: 24126
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`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS’ EYES ONLY
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`IN THE UNITED STATES DISTRICT COURT
`FOR THE DISTRICT OF DELAWARE
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`WIRTGEN AMERICA, INC.,
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`Plaintiff,
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`v. )
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`CATERPILLAR INC.,
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`Defendant.
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`________________________________
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`C.A. No. 17-770-JDW
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`JOINT OPENING EXPERT REPORT OF JOSEPH RAKOW, Ph.D., P.E., F.A.S.M.E.
`AND ADAM SORINI, Ph.D.
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`HIGHLY CONFIDENTIAL – OUTSIDE ATTORNEY EYES ONLY
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`2111403.000 - 6524
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`

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`Case 1:17-cv-00770-JDW Document 230-14 Filed 10/05/23 Page 3 of 5 PageID #: 24127
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`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS’ EYES ONLY
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`VIII. Conclusion
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`181. For at least the reasons stated above, it is our opinion that the Asserted Claims are invalid.
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`We declare under the penalty of perjury that the foregoing is true and correct.
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`Executed on May 19, 2023 at Menlo Park, California
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`Joseph Rakow, Ph.D, P.E., F.A.S.M.E.
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`Adam Sorini, Ph.D.
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`83
`HIGHLY CONFIDENTIAL – OUTSIDE ATTORNEY EYES ONLY
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`2111403.000 - 6524
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`

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`Case 1:17-cv-00770-JDW Document 230-14 Filed 10/05/23 Page 4 of 5 PageID #: 24128
`Case 1:17-cv-00770-JDW Document 230-14 Filed 10/05/23 Page 4 of 5 PagelD #: 24128
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`APPENDIX E
`APPENDIX E
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`LIST OF MATERIALS REVIEWED AND/OR RELIED UPON
`LIST OF MATERIALS REVIEWED AND/OR RELIED UPON
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`Case 1:17-cv-00770-JDW Document 230-14 Filed 10/05/23 Page 5 of 5 PageID #: 24129
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`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS’ EYES ONLY
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`LIST OF MATERIALS REVIEWED AND/OR RELIED UPON
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`- U.S. Patent 8,113,592
`- U.S. Patent 9,010,871
`- U.S. Patent 9,656,530
`- U.S. Patent 6,234,061 (Glasson)
`- U.S. Patent 5309407 (Sehr)
`- WO 97/42377 (Busley)
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`IPR2017-02188, paper 71 (EXPONENT_0005166)
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`ITC1067 Final Initial Determination in the matter of Inv. No. 337-TA-1067
`- U.S. Patent 6,450,048 to Samuelson
`- U.S. Patent 4,140,420 to Swisher, Jr.
`- U.S. Patent 4,213,719 to Swisher, Jr.
`- WA-0000605,’530 Patent File History
`- WA-0002080,’592 Patent File History
`- WA-0003575,’871 Patent File History
`- Wirtgen’s 2nd Supplemental Responses & Objections to Caterpillars 1st Interrogatories
`- Deposition of Jeffrey Wiley
`- Deposition of Eric Engelmann
`- Deposition of Timothy Lewis
`- Deposition of Mr. Conwell Rife
`- Conversation with Dario Sansone, 05/08/23
`- CAT0029803
`- CAT0035508 – PM465 Product Bulletin
`- CAT0035566 – PM465 Technical Presentation.
`- CAT_00057176
`- CAT-770_047008 – PM-465
`- CAT-770_047020 – PM-565B
`- CAT-770_047099 – PM-465 Parts Manual
`- CAT-770_047609
`- CAT-770_047793 – PM-465 Systems Operation Testing & Adjusting
`- CAT_770_048823 – Operation and Maintenance Manual
`- CAT-770_048961 – PM-565 Part Manual
`- CAT-770_050843 – PM-565 Marketing Material
`- CAT_00056223 – PM565 Service Training Guide (Aug 1993)
`- CAT-770_065145 – PM-565 Operation and Maintenance Manual
`- CAT-770_065297 – PM-565 Technical Presentation
`- CAT-770_066610 – PM-565B Technical Presentation
`- CAT_00057447 (788 page source code document, Bates-stamped 00057447 in filename)
`- CAT_SourceCode_000929-01021 (93 page source code document, Bates-stamped
`00057910 in file name)
`- CAT0021281 - CAT0021282 – Bitelli Puma SF 200
`- CAT0019162 - CAT0019235
`- RX-0001 – PM-565 Operation and Maintenance Manual
`E-1
`HIGHLY CONFIDENTIAL – OUTSIDE ATTORNEY EYES ONLY
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`2111403.000
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