`Declaration In Support Of Petition For Inter Partes Review
`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`_______________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`_____________
`
`Samsung Electronics Co., Ltd.
`Petitioner
`v.
`
`Koninklijke KPN N.V.
`Patent Owner
`
`Patent No. 8,886,772
`Issue Date: November 11, 2014
`Title: METHOD AND SYSTEM FOR REMOTE DEVICE MANAGEMENT
`_______________
`
`Inter Partes Review No. _____
`____________________________________________________________
`
`
`
`DECLARATION OF DR. PETER REIHER IN SUPPORT OF PETITION
`FOR INTER PARTES REVIEW
`
`UNDER 35 U.S.C. §§ 311-319 AND 37 C.F.R. § 42.100 et seq.
`
`
`Mail Stop “PATENT BOARD”
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`P.O. Box 1450
`Alexandria, VA 22313-1450
`
`
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`Samsung, Exh. 1006, p. 1
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`TABLE OF CONTENTS
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`I.
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`INTRODUCTION ......................................................................................... 1
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`A. Educational Background .................................................................................. 1
`B. Career History .................................................................................................. 2
`C. Publications and Patents .................................................................................. 3
`D. Other Relevant Qualifications ......................................................................... 4
`E. Materials and Other Information Considered .................................................. 5
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`II. UNDERSTANDING OF THE LAW ........................................................... 5
`
`A. Legal Standard for Prior Art ............................................................................ 5
`B. Legal Standard for Anticipation ...................................................................... 6
`C. Legal Standard for Obviousness ...................................................................... 7
`D. Legal Standard for Claim Construction .........................................................12
`E. Legal Standard for Priority Date ...................................................................18
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`III. LEVEL OF SKILL OF ONE OF ORDINARY SKILL IN THE ART ..19
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`IV. TECHNOLOGY BACKGROUND ............................................................20
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`V.
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`THE ‘772 PATENT .....................................................................................29
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`A. Summary of the ’772 Patent ..........................................................................29
`B. ’772 Patent Prosecution History ....................................................................35
`C. ’772 Patent Claims .........................................................................................38
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`VI. THE CHALLENGED CLAIMS ................................................................44
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`VII. CLAIM CONSTRUCTION ........................................................................44
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`A. “a plurality of auto-configuration servers (ACSs)” .......................................45
`B. “auto-configuration server managing device (ACSMD)” .............................47
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`VIII. ANALYSIS OF THE PRIOR ART ........................................................50
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`IX. BATES RENDERS OBVIOUS THE ASSERTED CLAIMS OF THE
`’772 PATENT .........................................................................................................55
`
`A. Bates Renders Obvious Claim 1 ....................................................................55
`B. Bates Renders Obvious Claim 2 ....................................................................71
`C. Bates in view of Barakat Renders Obvious Claim 8 .....................................72
`D. Bates in view of Yla-Mella Renders Obvious Claim 8 .................................76
`E. Bates in view of Applicant's Admitted Prior Art Renders Obvious
` Claim 9 .........................................................................................................78
`F. Bates in view of Bauchot, and further in view Applicant's Admitted Prior
`Art Renders Obvious Claim 9 .......................................................................84
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`
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`ii
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`Samsung, Exh. 1006, p. 2
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`G. Bates Renders Obvious Claim 10 ..................................................................88
`H. Bates Renders Obvious Claim 11 ..................................................................92
`I. Bates Renders Obvious Claim 12 ..................................................................93
`J. Bates Renders Obvious Claim 13 ..................................................................97
`K. Bates Renders Obvious Claim 14 ..................................................................97
`L. Bates Renders Obvious Claim 15 ..................................................................98
`M. Bates Renders Obvious Claim 16 ................................................................100
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`X. RESERVATION OF RIGHTS .................................................................100
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`EXHIBIT 1: CURRICULUM VITAE OF DR. PETER REIHER .................103
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`EXHIBIT 2: MATERIALS CONSIDERED IN THE PREPARATION OF
`THIS REPORT ....................................................................................................123
`
`iii
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`Samsung, Exh. 1006, p. 3
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`I. INTRODUCTION
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`
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`1. My name is Peter Reiher, Ph.D. I am an Adjunct Professor of
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`Computer Science at the University of California, Los Angeles (UCLA) in Los
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`Angeles, California. I have prepared this report as an expert witness on behalf of
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`Samsung. In this report I give my opinions as to whether the asserted claims of
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`U.S. Patent No. 8,886,772 (the “’772 Patent”) are valid. I provide technical bases
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`for these opinions as appropriate.
`
`2.
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`This report contains statements of my opinions formed to date
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`and the bases and reasons for those opinions. I may offer additional opinions
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`based on further review of materials in this case, including opinions and/or
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`testimony of other expert witnesses.
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`3.
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`I have summarized in this section my educational background,
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`career history, publications, and other relevant qualifications. My full curriculum
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`vitae is attached as Exhibit 1 to this report.
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`A. Educational Background
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`4.
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`I received a BS degree in electrical engineering, with a
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`concentration in computer science, from the University of Notre Dame in 1979,
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`graduating cum laude. I then studied computer science at UCLA, receiving my
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`
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`1
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`Samsung, Exh. 1006, p. 4
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`MS degree in 1984 and my Ph.D. in 1987. My dissertation was on scaling issues
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`in distributed systems, working in particular on the Locus Operating System.
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`B. Career History
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`5.
`
`I spent five years, after completing my Ph.D., at the Jet
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`Propulsion Laboratory, where I worked on a parallel discrete event simulation
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`system called the Time Warp Operating System. I then returned to UCLA as a
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`researcher in the Computer Science department, working in the fields of operating
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`systems, distributed systems, computer networks, computer security, and mobile
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`and ubiquitous systems. I became an adjunct associate professor in the UCLA
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`Computer Science department in 1995. I was promoted to adjunct professor in
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`2009.
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`6. My work at UCLA has encompassed both teaching and
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`research. I have led several research projects and have taught a number of classes.
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`My research projects have been supported by US government agencies such as
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`DARPA, NSF, the Department of Homeland Security, and the National Institute of
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`Health, and by companies such as Intel, Microsoft, Hewlett-Packard, Lockheed-
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`Martin, and GTE. The topics of these research projects include operating system
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`security, defending against distributed denial of service attacks, replicated data
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`systems for mobile computing, ubiquitous computing infrastructure, file systems,
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`active and software defined networks, and security issues for autonomous vehicles
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`
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`2
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`Samsung, Exh. 1006, p. 5
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`and vehicular ad hoc networks. I have performed joint research projects with
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`other UCLA faculty members in the Computer Science and Electrical Engineering
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`departments (including Dr. Leonard Kleinrock, one of the fathers of the Internet),
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`as well as faculty at other institutions such as Stanford University, Carnegie
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`Mellon University, University of California, Berkeley, University of Southern
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`California, Purdue University, the University of Oregon, Florida State University,
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`and the University of Delaware.
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`7.
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`I have supervised several Ph.D. students, 17 of whom have
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`received Ph.D.s while working with me, as well as many more MS students and
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`undergraduate researchers. Some of my Ph.D. students are in faculty positions at
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`the University of Oregon, Harvey Mudd College, Florida State University, and
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`other universities. Others work in major corporations such as Intel, Google, IBM,
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`and Oracle.
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`8.
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`I have taught classes in computer security, operating systems,
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`computer networks, distributed systems, ubiquitous computing, and performance
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`evaluation of computer systems. In all, I have taught over 60 courses while at
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`UCLA on these and other related topics.
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`C. Publications and Patents
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`9.
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`I have published over 120 papers in conferences, workshops,
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`and journals, as well as several book chapters on topics related to my research.
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`3
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`Samsung, Exh. 1006, p. 6
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`
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`These have appeared in leading venues such as Infocom, the Usenix Annual
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`Technical Conference, the Usenix Security Symposium, ICNP, ACSAC, and
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`various IEEE and ACM journals. I am also co-author of the first book on
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`distributed denial of service attacks.
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`10.
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`I am a co-inventor on an invention currently in the process of
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`being patented. This invention addresses security issues for mobile devices. I am
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`a joint inventor with co-researchers at Florida State University.
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`D. Other Relevant Qualifications
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`11.
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`I served as Vice-Chair of the IEEE ComSoc Communications
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`and Information Security Technical Subcommittee from 2005 to 2007, and was an
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`associate editor of ACM Transactions on Internet Technologies from 2007 to 2015.
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`I have reviewed papers for several other IEEE and ACM journals. I have worked
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`on the technical review of security aspects of proposals for new Top Level Domain
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`Internet names for ICANN in 2000, and was a member the I3P Wireless Network
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`Security Cluster group in 2002. I consulted with the Department of Homeland
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`Security on plans for the US government research agenda in computer and network
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`security in 2005. I was program chair for AMS 02, WSPWN06, Sauce 2008,
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`Sauce 2009, MTEM 2012, and was general chair for the Symposium on
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`Experiences with Distributed and Multiprocessor Systems in 1993. I have been a
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`program committee member for over 75 conferences and workshops, and have
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`
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`
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`4
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`Samsung, Exh. 1006, p. 7
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`
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`reviewed research proposals for the National Science Foundation for over ten
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`years.
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`E. Materials and Other Information Considered
`
`12.
`
`I have considered information from various sources in forming
`
`my opinions. I have reviewed Samsung’s Petition for Inter Partes Review of the
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`’772 patent (the “Petition”), to which this Declaration is being submitted as Exhibit
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`No. 1006, in detail and agree with both its analysis and conclusions. I have also
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`reviewed and considered each of the exhibits to the Petition in forming my
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`opinions.
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`II. UNDERSTANDING OF THE LAW
`
`13.
`
`I have applied the following legal principles provided to me by
`
`counsel in arriving at the opinions set forth in this report.
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`A. Legal Standard for Prior Art
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`14.
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`I understand that a patent or other publication must first qualify
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`as prior art before it can be used to invalidate a patent claim.
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`15.
`
`I understand that a U.S. or foreign patent qualifies as prior art to
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`an asserted patent if the date of issuance of the patent is prior to the invention of
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`the asserted patent. I further understand that a printed publication, such as a book
`
`or an article published in a magazine or trade publication, qualifies as prior art to
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`
`
`
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`5
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`Samsung, Exh. 1006, p. 8
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`
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`an asserted patent if the date of publication is prior to the invention of the asserted
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`patent.
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`16.
`
`I understand that a U.S. or foreign patent qualifies as prior art to
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`an asserted patent if the date of issuance of the patent is more than one year before
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`the filing date of the asserted patent. I further understand that a printed
`
`publication, such as a book or an article published in a magazine or trade
`
`publication, constitutes prior art to an asserted patent if the publication occurs more
`
`than one year before the filing date of the asserted patent.
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`17.
`
`I understand that a U.S. patent qualifies as prior art to the
`
`asserted patent if the application for that patent was filed in the United States
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`before the invention of the asserted patent.
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`18.
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`I understand that to qualify as prior art, a reference must contain
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`an enabling disclosure that allows one of ordinary skill to practice the claims
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`without undue experimentation.
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`19.
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`I understand that documents and materials that qualify as prior
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`art can be used to invalidate a patent claim as anticipated or as obvious.
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`B. Legal Standard for Anticipation
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`20.
`
`I understand that, once the claims of a patent have been
`
`properly construed, the second step in determining anticipation of a patent claim
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`6
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`Samsung, Exh. 1006, p. 9
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`requires a comparison of the properly construed claim language to the prior art on
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`a limitation-by-limitation basis.
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`21.
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`I understand that a prior art reference “anticipates” an asserted
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`claim, and thus renders the claim invalid, if all elements of the claim are disclosed
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`in that prior art reference, either explicitly or inherently (i.e., necessarily present or
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`implied).
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`22.
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`I understand that a patent is anticipated if before such person’s
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`invention thereof, the invention was made in this country by another inventor who
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`had not abandoned, suppressed, or concealed it.
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`23.
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`I have written this report with the understanding that in an inter
`
`partes review anticipation must be shown by a preponderance of the evidence.
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`C. Legal Standard for Obviousness
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`24.
`
`I have been instructed by counsel on the law regarding
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`obviousness, and understand that even if a patent is not anticipated, it is still
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`invalid if the differences between the claimed subject matter and the prior art are
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`such that the subject matter as a whole would have been obvious at the time the
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`invention was made to a person of ordinary skill in the pertinent art.
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`25.
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`I understand that a person of ordinary skill in the art provides a
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`reference point from which the prior art and claimed invention should be viewed.
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`7
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`Samsung, Exh. 1006, p. 10
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`
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`This reference point prevents a person of ordinary skill from using one's insight or
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`hindsight in deciding whether a claim is obvious.
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`26.
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`I also understand that an obviousness determination includes
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`the consideration of various factors such as (1) the scope and content of the prior
`
`art, (2) the differences between the prior art and the Asserted Claims, (3) the level
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`of ordinary skill in the pertinent art, and (4) the existence of secondary
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`considerations such as commercial success, long-felt but unresolved needs, failure
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`of others, etc.
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`27.
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`I am informed that secondary indicia of non-obviousness may
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`include (1) a long felt but unmet need in the prior art that was satisfied by the
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`invention of the patent; (2) commercial success or lack of commercial success of
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`processes covered by the patent; (3) unexpected results achieved by the invention;
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`(4) praise of the invention by others skilled in the art; (5) taking of licenses under
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`the patent by others; and (6) deliberate copying of the invention. I also understand
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`that there must be a relationship between any such secondary indicia and the
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`invention. I further understand that contemporaneous and independent invention
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`by others is a secondary consideration supporting an obviousness determination.
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`28.
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`I understand that an obviousness evaluation can be based on a
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`combination of multiple prior art references. I understand that the prior art
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`references themselves may provide a suggestion, motivation, or reason to combine,
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`
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`8
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`Samsung, Exh. 1006, p. 11
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`
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`but other times the nexus linking two or more prior art references is simple
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`common sense. I further understand that obviousness analysis recognizes that
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`market demand, rather than scientific literature, often drives innovation, and that a
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`motivation to combine references may be supplied by the direction of the
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`marketplace.
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`29.
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`I understand that if a technique has been used to improve one
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`device, and a person of ordinary skill in the art would recognize that it would
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`improve similar devices in the same way, using the technique is obvious unless its
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`actual application is beyond his or her skill.
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`30.
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`I also understand
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`that practical and common
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`sense
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`considerations should guide a proper obviousness analysis, because familiar items
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`may have obvious uses beyond their primary purposes. I further understand that a
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`person of ordinary skill in the art looking to overcome a problem will often be able
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`to fit the teachings of multiple publications together like pieces of a puzzle,
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`although the prior art need not be like two puzzle pieces that must fit perfectly
`
`together. I understand that obviousness analysis therefore takes into account the
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`inferences and creative steps that a person of ordinary skill in the art would employ
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`under the circumstances.
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`31.
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`I understand that a particular combination may be proven
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`obvious by showing that it was obvious to try the combination. For example, when
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`9
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`Samsung, Exh. 1006, p. 12
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`
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`there is a design need or market pressure to solve a problem and there are a finite
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`number of identified, predictable solutions, a person of ordinary skill has good
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`reason to pursue the known options within his or her technical grasp because the
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`result is likely the product not of innovation but of ordinary skill and common
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`sense.
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`32.
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`I understand
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`that
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`the combination of familiar elements
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`according to known methods may be proven obvious when it does no more than
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`yield predictable results. When a work is available in one field of endeavor, design
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`incentives and other market forces can prompt variations of it, either in the same
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`field or a different one. If a person of ordinary skill can implement a predictable
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`variation, obviousness likely bars its patentability.
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`33.
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`It is further my understanding that a proper obviousness
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`analysis focuses on what was known or obvious to a person of ordinary skill in the
`
`art, not just the patentee. Accordingly, I understand that any need or problem
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`known in the field of endeavor at the time of invention and addressed by the patent
`
`can provide a reason for combining the elements in the manner claimed.
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`34.
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`I understand that a claim can be obvious in light of a single
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`reference, without the need to combine references, if the elements of the claim that
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`are not found explicitly or inherently in the reference can be supplied by the
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`common sense of one of skill in the art.
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`10
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`Samsung, Exh. 1006, p. 13
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`35.
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`I understand that a person of ordinary skill could have
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`combined two pieces of prior art or substituted one prior art element for another if
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`the substitution can be made with predictable results, even if the swapped-in
`
`element is different from the swapped-out element. In other words, the prior art
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`need not be like two puzzle pieces that must fit together perfectly. The relevant
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`question is whether prior art techniques are interoperable with respect to one
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`another, such that that a person of skill would view them as a design choice, or
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`whether a person of skill could apply prior art techniques into a new combined
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`system.
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`36.
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`In sum, my understanding is that prior art teachings are
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`properly combined where a person of ordinary skill in the art having the
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`understanding and knowledge reflected in the prior art and motivated by the
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`general problem facing the inventor, would have been led to make the combination
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`of elements recited in the claims. Under this analysis, the prior art references
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`themselves, or any need or problem known in the field of endeavor at the time of
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`the invention, can provide a reason for combining the elements of multiple prior art
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`references in the claimed manner.
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`37.
`
`I have been informed and understand that the obviousness
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`analysis requires a comparison of the properly construed claim language to the
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`prior art on a limitation-by-limitation basis.
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`
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`
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`11
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`Samsung, Exh. 1006, p. 14
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`38.
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`I have written this report with the understanding that in an inter
`
`partes review obviousness must be shown by a preponderance evidence.
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`D. Legal Standard for Claim Construction
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`39.
`
`I have been instructed by counsel on the law regarding claim
`
`construction and patent claims, and understand that a patent may include two types
`
`of claims, independent claims and dependent claims. An independent claim stands
`
`alone and includes only the limitations it recites. A dependent claim can depend
`
`from an independent claim or another dependent claim. I understand that a
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`dependent claim includes all the limitations that it recites in addition to all of the
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`limitations recited in the claim from which it depends.
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`40.
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`It is my understanding that in proceedings before the USPTO
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`the claims of an unexpired patent are to be given their broadest reasonable
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`interpretation in light of the specification from the perspective of one of skill in the
`
`art. It is my further understanding that claim terms of an expired patent are given
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`the meaning the term would have to a person of ordinary skill in the art at the time
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`of the invention, in view of the specification and file history. I understand that the
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`standard used for expired patents is similar to that used in district court litigation,
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`and that this standard is sometimes referred to as the Phillips standard.
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`
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`12
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`Samsung, Exh. 1006, p. 15
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`41.
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`It
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`is my understanding
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`that
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`the broadest
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`reasonable
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`interpretation of a claim term may be the same as or broader than the construction
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`of a term under the Phillips standard, but it cannot be narrower.
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`42.
`
`In comparing the claims of the ’772 patent to the prior art, I
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`have carefully considered the ’772 patent and its file history in light of the
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`understanding of a person of skill at the time of the alleged invention. I have also
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`considered the constructions set forth by Patent Owner in the copending litigation
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`against Petitioner together with the Patent Owner’s apparent interpretation of the
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`claims based on Patent Owner’s infringement contentions.
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`43.
`
`I understand that to determine how a person of ordinary skill
`
`would understand a claim term, one should look to those sources available that
`
`show what a person of skill in the art would have understood disputed claim
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`language to mean. Such sources include the words of the claims themselves, the
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`remainder of the patent’s specification, the prosecution history of the patent (all
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`considered “intrinsic” evidence), and “extrinsic” evidence concerning relevant
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`scientific principles, the meaning of technical terms, and the state of the art.
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`44.
`
`I understand that, in construing a claim term, one looks
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`primarily to the intrinsic patent evidence, including the words of the claims
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`themselves, the remainder of the patent specification, and the prosecution history.
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`
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`13
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`Samsung, Exh. 1006, p. 16
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`45.
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`I understand that extrinsic evidence, which is evidence external
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`to the patent and the prosecution history, may also be useful in interpreting patent
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`claims when the intrinsic evidence itself is insufficient.
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`46.
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`I understand that words or terms should be given their ordinary
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`and accepted meaning unless it appears that the inventors were using them to mean
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`something else. In making this determination, the claims, the patent specification,
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`and the prosecution history are of paramount importance. Additionally, the
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`specification and prosecution history must be consulted to confirm whether the
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`patentee has acted as its own lexicographer (i.e., provided its own special meaning
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`to any disputed terms), or intentionally disclaimed, disavowed, or surrendered any
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`claim scope.
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`47.
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`I understand that the claims of a patent define the scope of the
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`rights conferred by the patent. The claims particularly point out and distinctly
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`claim the subject matter which the patentee regards as his invention. Because the
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`patentee is required to define precisely what he claims his invention to be, it is
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`improper to construe claims in a manner different from the plain import of the
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`terms used consistent with the specification. Accordingly, a claim construction
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`analysis must begin and remain centered on the claim
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`language itself.
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`Additionally, the context in which a term is used in the asserted claim can be
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`highly instructive. Likewise, other claims of the patent in question, both asserted
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`14
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`Samsung, Exh. 1006, p. 17
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`and unasserted, can inform the meaning of a claim term. For example, because
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`claim terms are normally used consistently throughout the patent, the usage of a
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`term in one claim can often illuminate the meaning of the same term in other
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`claims. Differences among claims can also be a useful guide in understanding the
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`meaning of particular claim terms.
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`48.
`
`I understand that the claims of a patent define the purported
`
`invention. I understand that the purpose of claim construction is to understand
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`how one skilled in the art would have understood the claim terms at the time of the
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`purported invention.
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`49.
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`I understand that a person of ordinary skill in the art is deemed
`
`to read a claim term not only in the context of the particular claim in which the
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`disputed term appears, but in the context of the entire patent, including the
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`specification. For this reason, the words of the claim must be interpreted in view
`
`of the entire specification. The specification is the primary basis for construing the
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`claims and provides a safeguard such that correct constructions closely align with
`
`the specification. Ultimately, the interpretation to be given a term can only be
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`determined and confirmed with a full understanding of what the inventors actually
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`invented and intended to envelop with the claim as set forth in the patent itself.
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`50.
`
`I understand that it is improper to place too much emphasis on
`
`the ordinary meaning of the claim term without adequate grounding of that term
`
`
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`
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`15
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`Samsung, Exh. 1006, p. 18
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`
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`within the context of the specification of the asserted patent. Hence, claim terms
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`should not be broadly construed to encompass subject matter that, although
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`technically within the broadest reading of the term, is not supported when the
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`claims are read in light of the invention described in the specification. Put another
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`way, claim terms are given their broadest reasonable interpretation that is
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`consistent with the specification and the prosecution history. Art incorporated by
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`reference or otherwise cited during the prosecution history is also highly relevant
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`in ascertaining the breadth of claim terms.
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`51.
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`I understand that the role of the specification is to describe and
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`enable the invention. In turn, the claims cannot be of broader scope than the
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`invention that is set forth in the specification. Care must be taken lest word-by-
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`word definition, removed from the context of the patent, leads to an overall result
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`that departs significantly from the patented invention.
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`52.
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`I understand that claim terms must be construed in a manner
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`consistent with the context of the intrinsic record. In addition to consulting the
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`specification, one should also consider the patent’s prosecution history, if
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`available. The prosecution file history provides evidence of how both the Patent
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`Office and the inventors understood the terms of the patent, particularly in light of
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`what was known in the prior art. Further, where the specification describes a claim
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`16
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`Samsung, Exh. 1006, p. 19
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`
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`term broadly, arguments and amendments made during prosecution may require a
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`more narrow interpretation.
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`53.
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`I understand that while intrinsic evidence is of primary
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`importance, extrinsic evidence, e.g., all evidence external to the patent and
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`prosecution history, including expert and inventor testimony, dictionaries, and
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`learned treatises, can also be considered. For example, technical dictionaries may
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`help one better understand the underlying technology and the way in which one of
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`skill in the art might use the claim terms. Extrinsic evidence should not be
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`considered, however, divorced from the context of the intrinsic evidence.
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`Evidence beyond the patent specification, prosecution history, and other claims in
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`the patent should not be relied upon unless the claim language is ambiguous in
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`light of these intrinsic sources. Furthermore, while extrinsic evidence can shed
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`useful light on the relevant art, it is less significant than the intrinsic record in
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`determining the legally operative meaning of claim language.
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`54.
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`I understand that in general, a term or phrase found in the
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`introductory words of the claim, the preamble of the claim, should be construed as
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`a limitation if it recites essential structure or steps, or is necessary to give life,
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`meaning, and vitality to the claim. Conversely, a preamble term or phrase is not
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`limiting where a patentee defines a structurally complete invention in the claim
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`body and uses the preamble only to state a purpose or intended use for the
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`17
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`Samsung, Exh. 1006, p. 20
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`
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`invention. In making this distinction, one should review the entire patent to gain
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`an understanding of what the inventors claim they actually invented and intended
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`to encompass by the claims.
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`55.
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`I understand that language in the preamble limits claim scope
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`(i) if dependence on a preamble phrase for antecedent basis indicates a reliance on
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`both the preamble and claim body to define the claimed invention; (ii) if reference
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`to the preamble is necessary to understand limitations or terms in the claim body;
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`or (iii) if the preamble recites additional structure or steps that the specification
`
`identifies as important.
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`E. Legal Standard for Priority Date
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`56.
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`I further understand that the “critical date” for a patent is one
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`year prior to its filing date. It is my understanding that the critical date is
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`significant because patents, systems, or documents that are public prior to the
`
`critical date, if they disclose each and every limitation of the claims, will invalidate
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`a patent regardless of whether the inventors invented the claim.
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`57.
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`I further understand that the “priority date” of a patent is the
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`date on which it is filed, or the date on which an earlier-filed patent application is
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`filed if the patentee claims the benefit of priority to that earlier-filed patent
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`application. I further understand that the priority date is significant because
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`patents, systems, or documents that are public less than one year prior to the
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`
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`
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`18
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`Samsung, Exh. 1006, p. 21
`
`
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`priority date may invalidate the claims. My understanding is that, for such prior art
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`references, a patentee may attempt to show that the claimed invention was
`
`conceived prior to the publication date of the prior art reference.
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`58.
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`I understand that a patent may be valid over prior art that was
`
`published or was publicly available before the priority date but after the critical
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`date. To do so, it is my understanding that patentee must prove with corroborating
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`evidence that the named inventors conceived of the claimed invention before the
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`prior art, and were diligent in reducing the claimed inventions to practice.
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`III.
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` LEVEL OF SKILL OF ONE OF ORDINARY SKILL IN THE ART
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`59.
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`In determining the characteristics of a hypothetical person of
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`ordinary skill in the art of the ’772 patent at the time of the claimed inventions
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`(which I take to be July 2008), I considered several things, including various