UNITED STATES PATENT AND TRADEMARK OFFICE
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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`APPLE INC.
`Petitioners
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`v.
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`PERSONALIZED MEDIA COMMUNICATIONS LLC
`Patent Owner
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`Case No.: IPR2016-01520
`Patent No.: 8,559,635
`For: Signal Processing Apparatus and Methods
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`DECLARATION OF ALFRED WEAVER, PH.D.
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`PURSUANT TO 37 C.F.R. § 1.68
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`Mail Stop PATENT BOARD
`Patent Trial and Appeal Board
`United States Patent and Trademark Office
`P.O. Box 1450
`Alexandria, VA 22313-1450
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 1
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`

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`Table of Contents
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`Page
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`D.
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`Qualifications & Engagement ....................................................................... 1
`I.
`II. Materials Reviewed and Relied upon .......................................................... 7
`III. Summary of Conclusions .............................................................................. 7
`IV. Legal Standards ............................................................................................. 8
` Anticipation ........................................................................................... 9
`A.
`Obviousness ........................................................................................... 9
`B.
`Claim Construction ............................................................................. 11
`C.
`Persons of Ordinary Skill in the Art .................................................... 12
`V.
`Background Technology of the ’635 Patent .............................................. 12
`VI. Claim Construction ..................................................................................... 19
` Decryption terms ................................................................................. 19
`A.
`unaccompanied by any non-digital information transmission” .......... 34
`VII. The ’635 Patent is Patentable Over the Prior Art .................................... 36
`Priority ................................................................................................. 36
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`(a) Claim 3 ...................................................................................... 45
`(b) Claims 4 and 7 ........................................................................... 59
`(c) Claim 13 .................................................................................... 79
`(d) Claim 18 .................................................................................... 95
`(e) Claim 20 ..................................................................................110
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`B.
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`“receiving an encrypted digital information transmission …
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`A.
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 2
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`B.
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`C.
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`D.
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`Claims 21 and 28.....................................................................122
`(f)
`(g) Claim 32 ..................................................................................132
`(h) Claim 33 ..................................................................................145
`Claim 3 Is Patentable over Campbell ................................................ 160
`(a) Campbell Does Not Qualify As Prior Art ...............................161
`(b)
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`“receiving at said remote transmitter station one or more
`second instruct signals which operate at the subscriber
`station to identify and decrypt said unit of programming
`or said one or more first instruct signals, said remote
`transmitter station transferring said one or more second
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`instruct signals to said transmitter” .........................................163
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`(c)
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`“receiving a control signal which operates at the remote
`transmitter station to control the communication of a unit
`of programming and one or more first instruct signals and
`communicating said control signal to said remote
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`“receiving a code or datum identifying a unit of
`programming to be transmitted by the remote transmitter
`station, said remote transmitter station transferring said
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`transmitter station” ..................................................................165
`(d)
`unit of programming to a transmitter” ....................................166
`Claim 33 is Patentable over Chandra in view of Nachbar ................ 170
`(a) Chandra and Nachbar Do Not Qualify As Prior Art ...............173
`(b) Claim 33 ..................................................................................173
`Claims 13, 18, 20, 32 Are Patentable over Chandra ......................... 181
`(a) Chandra Does Not Qualify As Prior Art .................................181
`(b) Claim 18 ..................................................................................181
`(c) Claim 20 ..................................................................................183
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`ii
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 3
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`E.
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`(d) Claim 32 ..................................................................................184
`(e) Claim 13 ..................................................................................185
`Claims 4, 7, 21, and 28-30 Are Patentable over Seth-Smith ............ 187
`(a)
`Seth-Smith Does Not Qualify As Prior Art ............................187
`(b) Claim 4 ....................................................................................188
`(c) Claim 7 ....................................................................................189
`(d) Claim 21 ..................................................................................189
`(e) Claim 28 ..................................................................................190
`(f)
`Claims 29 and 30.....................................................................190
`VIII. CONCLUSION .......................................................................................... 191
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`iii
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 4
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`I, Dr. Alfred C. Weaver, do hereby declare:
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`1.
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`I am making this declaration at the request of Patent Owner
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`Personalized Media Communications, LLC (“PMC”) in the matter of the Inter
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`Partes Review No. IPR2016-01520 of U.S. Patent No. 8,559,635 (“’635 Patent.”)
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`I.
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`QUALIFICATIONS & ENGAGEMENT
`2.
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`I earned a Bachelor of Science in Engineering Science in 1971 from
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`the University of Tennessee. I also earned a Master of Science in Computer
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`Science from the University of Illinois at Urbana-Champaign in 1973. Thereafter,
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`I earned a Ph.D. in Computer Science at the University of Illinois at Urbana-
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`Champaign in 1976.
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`3.
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`I am currently a Professor of Computer Science and the Associate
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`Chair of the Department of Computer Science at the University of Virginia
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`(“UVa”). I have been employed at UVa continuously since 1977. Over the period
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`of my employment at UVa, I have taught more than 25 different courses, including
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`electronic commerce, operating systems, computer networks, and various
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`programming courses. Moreover, I have been the graduate advisor for 69 Ph.D.
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`and master’s students, all in Computer Science.
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`4.
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`In addition to my teaching duties, I am also the Founding Director of
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`UVa’s Applied Research Institute, a group of faculty engaged in research areas
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`related to national security and funded by both government and industry. To date,
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`1
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 5
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`I have published 16 books and book chapters, 30 refereed journal articles, 139
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`refereed conference publications, and 80 technical reports. I currently serve on the
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`Advisory Council of the Editorial Board of IEEE Computer magazine.
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`5.
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`As a researcher, I have served as Principal Investigator or co-Principal
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`Investigator of 130+ research projects funded by the federal government and
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`private industry. Recent research projects include 3D printing, automated analysis
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`of published scientific literature, secure mobile computing, crowdsourcing, data
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`integrity, and trustworthy computing.
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`6.
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`I have founded five companies. One of these, Network Xpress, Inc.,
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`was a spin- off from research work in computer networks funded by the U. S. Navy
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`at UVa. At its peak, another company, Reliacast, Inc., employed 90 people and
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`developed software for secure streaming of multimedia. Reliacast was ultimately
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`sold to Comcast.
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`7.
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`I have served as an expert witness in 20+ patent infringement cases
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`since 1988. Six of those cases have gone to trial. In the past four years I have
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`testified in court in two cases:
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` VS Technologies v. Twitter, Inc., No. 2:11-cv-00043-HCM-TEM in
`the United States District Court for the Eastern District of Virginia
`(Norfolk). In that case, I testified on behalf of Twitter.
` ePlus, Inc. v. Lawson Software, Inc., No. 3:09-cv-00620-REP in the
`United States District Court for the Eastern District of Virginia
`(Richmond). In that case, I testified on behalf of ePlus.
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`2
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 6
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`8.
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`A complete list of cases in which I have testified at deposition,
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`hearing or trial in the past 4 years is attached hereto as Exhibit 2.
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`9.
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`I have authored or co-authored 16 books or book chapters in the
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`computer science field and have authored or co-authored over 169 refereed journal
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`and conference papers on various topics related to computer science, computer
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`systems, computer networks, search agents, databases, the Internet and e-
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`commerce, among other topics. I am a member of the editorial board of the IEEE
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`Computer magazine.
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`10.
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`I have presented papers at numerous conferences and have served as
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`Program Chair or Technical Program Chair of a number of conferences around the
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`world. For example, I was the Keynote Speaker at the International Workshop on
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`Privacy, Security, and Trust for Mobile Devices (MobiPST’11), in Maui, Hawaii,
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`in July 2011 on the topic of “Providing Privacy and Security for Mobile Devices.”
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`I was the Keynote Speaker at the IEEE International Conference on Industrial
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`Technology (ICIT’05), in Hong Kong, in December 2005 on the topic of
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`“Achieving Data Privacy and Security Using Web Services.” I was the Keynote
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`Speaker at the IEEE International Conference on Emerging Technologies and
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`Factory Automation (ETFA’05), in Catania, Sicily, Italy, in September 2005 on the
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`topic of “A Security Architecture for Distributed Data Security.”
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`3
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 7
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`11. With my co-authors, Sam Dwyer and Kristen Hughes, I wrote chapter
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`two entitled “Health Insurance Accountability and Portability Act” in the book
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`Security Issues in the Digital Medical Enterprise, published by the Society for
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`Computer Applications in Radiology in 2004. I wrote the paper “Secure Sockets
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`Layer” in Computer in April 2006. With my co-author, Andrew Jurik, I wrote
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`“Securing Mobile Devices with Biotelemetry,” presented at the International
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`Workshop on Privacy, Security, and Trust in Mobile and Wireless Systems
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`(MobiPST’11), in Maui, Hawaii, in July, 2011. I presented the NATO Fellowship
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`Lecture at Bogazici University, in Istanbul, Turkey, in May 2000 on the topic of
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`“Internet Privacy and Security.” With my master’s student, Andrew Snyder, I
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`wrote “The e-Logistics of Securing Distributed Medical Data,” presented at the
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`IEEE International Conference on Industrial Informatics, Banff, Alberta, Canada,
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`in August 2003. I supervised Andrew Snyder’s master’s thesis on the topic of
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`“Performance Measurement and Workflow Impact of Securing Medical Data
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`Using HIPAA Compliant Encryption in a .NET Environment,” in August 2003.
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`12.
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`I am a named inventor on U.S. patent 4,217,658 that resulted from my
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`Ph.D. research at the University of Illinois.
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`13.
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`I am a Fellow of the IEEE, an honor awarded to less than two percent
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`of the IEEE membership.
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`4
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`Apple v. PMC
`IPR2016-01520
`Page 8
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`14.
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`I have been an invited guest lecturer at numerous meetings sponsored
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`by various corporations around the world. For example, I spoke on “Reliable
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`Multicast and Reliable Group Management” for a meeting held at Sun
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`Microsystems in Palo Alto, California in July, 1999. I gave a presentation entitled
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`“Xpress Transport Protocol” at a meeting sponsored by General Electric Research
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`and Development Laboratory, held in Schenectady, New York, in December, 1996.
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`I was an invited speaker on the topic of “Medical Data Privacy and Security” at the
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`Microsoft Healthcare Users’ Group meeting in Redmond, Washington in 2006.
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`15.
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`I was the Lucian Carr III Professor of Engineering and Applied
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`Science at the University of Virginia from 2002-2004. I was a member of the
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`Provost’s Promotion and Tenure Committee of the University of Virginia during
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`2003-2006. I served as the Chairman of the Department of Computer Science
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`during 1984-85 and am now the Associate Chair of my department. In 1996-1999
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`and again in 2012-2015, I served as a member of the Promotion and Tenure
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`Committee for the School of Engineering and Applied Science at the University of
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`Virginia and chaired that committee during 1998-1999 and 2014-2015.
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`16.
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`I teach the University of Virginia’s CS 4753 course “Electronic
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`Commerce Technologies.” This course explains the role of encryption in modern
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`electronic commerce and teaches the details of the mathematical algorithms that
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`implement symmetric key encryption, public key encryption, and other encryption
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`5
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 9
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`
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`techniques. I was the Principal Investigator for “Secure E-Commerce: A Modular
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`Course Supported by Virtual Laboratories,” a $500,000 research project funded by
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`the National Science Foundation to develop a course teaching secure e-commerce.
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`17.
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`I have also had the opportunity to consult with and/or work in the
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`commercial sector. For example, I received a $200,000 research grant from
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`Microsoft for my work in connection with development of a solution to the
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`problems associated with the privacy and security of medical data. In the past, I’ve
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`consulted for General Electric, Lockheed Martin, Honeywell, Raytheon, E-
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`Systems and others. Additionally, I founded five companies of my own which
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`focused on e-commerce. I was involved in all aspects of the life cycles of these
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`companies from raising start-up capital funding, to designing and developing
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`products, to attempting to commercialize these products in the marketplace. One
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`of these companies, Reliacast, developed secure multimedia distribution software
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`and was ultimately sold to Comcast.
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`18. A detailed curriculum vitae showing more of my credentials in these
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`fields and the cases in which I have testified in the past four years is attached as
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`Exhibit 2002.
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`19.
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`I am being compensated for my work in this matter at my standard
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`hourly rate of $400/hour for consulting services. My compensation for this matter
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`is not determined by or contingent upon the outcome of this case.
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`
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`6
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`PMC Exhibit 2001
`Apple v. PMC
`IPR2016-01520
`Page 10
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`

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`II. MATERIALS REVIEWED AND RELIED UPON
`20.
`In preparing this Declaration I reviewed and considered the following
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`
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`materials:
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`Description
`Ex. / Doc.
`Paper 1 Petition for Inter Partes Review by Petitioners (“Pet.”)
`1001 Declaration Of Anthony J. Wechselberger Under 37 C.F.R.
`§ 1.68 In Support Of Petition For Inter Review of U.S.
`Patent No. 8,559,635 and documents cited therein
`1003 U.S. Patent No. 8,559,635
`1004 U.S. Patent No. 4,694,490
`1041 U.S. Patent No. 4,817,140( “Chandra”)
`1042 Chandra in view of Daniel Nachbar, When Network File
`Systems Aren’t Enough: Automatic Software Distribution
`Revisited, USENIX Conference Proceedings, June 9-13,
`1986 (“Nachbar”)
`1043 U.S. Patent No. 4,866,770 to Seth-Smith et al. (“Seth-
`Smith”)
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`1044 U.S. Patent No. 4,536,791 to Campbell et al. (“Campbell”)
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`-
`21.
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`All other documents cited and used in this Declaration.
`I have also relied upon my years of education, teaching, research, and
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`experience concerning software, computer architecture, networks, network
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`protocols, electronic commerce, privacy and security.
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`III. SUMMARY OF CONCLUSIONS
`22.
`I understand that the Petitioner challenged claims 3-4, 7, 13, 18, 20,
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`21, 28-30, 32, and 33 (the “Challenged Claims”) of the ’635 Patent on the
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`following grounds:
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`7
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`Apple v. PMC
`IPR2016-01520
`Page 11
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`Prior Art
`Campbell et al.
`Chandra
`Chandra in view of Nachbar
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`Seth-Smith
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`Statute Claims
`§ 103
`3
`§ 102
`13, 18, 20, and 32
`§ 103
`33
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`§ 102
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`4, 7, 21, 28, 29, 30
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`23.
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`I have been asked by PMC to determine whether claims 3-4, 7, 13, 18,
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`20, 21, 28-30, 32, and 33 of the ’635 Patent are rendered unpatentable as alleged
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`by Petitioner Apple, Inc. (“Petitioner”). Petitioner cites to the declaration of Mr.
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`Wechselberger (Ex. 1001). I have reviewed his declaration. I provide my opinion
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`regarding many of Mr. Wechselberger’s positions below.
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`24.
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`I find that Petitioner has not set forth a reasonable likelihood that
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`Petitioner would prevail as to at least one claim being challenged. I find that these
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`claims are novel and are not rendered unpatentable over the grounds that Petitioner
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`has set forth.
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`IV. LEGAL STANDARDS
`25.
`I am not an attorney. I have been advised of the following general
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`principles of patent law to be considered in formulating my opinions as to whether
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`the claims of the ’635 Patent are anticipated or would have been obvious to a
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`person of ordinary skill in the art at the time of the invention in view of the prior
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`art.
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`Apple v. PMC
`IPR2016-01520
`Page 12
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` Anticipation
`A.
`26.
`I understand that to anticipate a patent claim, a single prior art
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`reference must disclose every element of the claim, either explicitly or inherently
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`to a person of ordinary skill in the art. I understand that an element of a claim is
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`“inherent” in the disclosure of a prior art reference when the missing element is the
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`inevitable outcome of the process and/or thing that is described in the prior art
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`reference.
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` Obviousness
`B.
`27.
`I understand that a prior art reference can render a patent claim
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`obvious to one of ordinary skill in the art if the differences between the subject
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`matter set forth in the patent claim and the prior art are such that the subject matter
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`of the claim would have been obvious at the time the claimed invention was made.
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`In analyzing obviousness, I understand that it is important to consider the scope of
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`the claims, the level of skill in the relevant art, the scope and content of the prior
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`art, the differences between the prior art and the claims, and any secondary
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`considerations.
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`28.
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`I understand that when the claimed subject matter involves combining
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`pre-existing elements to yield no more than one would expect from such an
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`arrangement, the combination is obvious. I also understand that in assessing
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`whether a claim is obvious, one must consider whether the claimed improvement is
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`Apple v. PMC
`IPR2016-01520
`Page 13
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`more than the predictable use of prior art elements according to their established
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`functions. I understand that there need not be a precise teaching in the prior art
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`directed to the specific subject matter of a claim because one can take account of
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`the inferences and creative steps that a person of ordinary skill in the art would
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`employ. I further understand that a person of ordinary skill is a person of ordinary
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`creativity, not an automaton. However, I understand that obviousness cannot be
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`based on the hindsight combination of components selectively culled from the
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`prior art. I also understand that a combination is not obvious if it requires
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`extensive additional problem-solving steps that are not taught in the references and
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`that are not simple matters for a person of ordinary skill in the art. That is, a
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`combination is not obvious if it requires the development of an additional complex
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`infrastructure.
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`29.
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`I understand that in an obviousness analysis, neither the motivation
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`nor the avowed purpose of the inventors controls the inquiry. Any need or
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`problem known in the field at the time of the invention and addressed by the patent
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`can provide a reason for combining elements. For example, I understand that it is
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`important to consider whether there existed, at the time of the invention, a known
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`problem for which there was an obvious solution encompassed by the patent’s
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`claims. I understand that known techniques can have obvious uses beyond their
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`10
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`IPR2016-01520
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`primary purposes, and that a person of ordinary skill in the art can fit the teachings
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`of multiple pieces of prior art together like pieces of a puzzle.
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`30.
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`I understand that, when there is a reason to solve a problem and there
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`are a finite number of identified, predictable solutions, a person of ordinary skill in
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`the art has good reason to pursue the known options within his or her technical
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`grasp. I further understand that, if this leads to the anticipated success, it is likely
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`that the product, not of innovation, but of ordinary skill and common sense, which
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`bears on whether the claim would have been obvious.
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`31.
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`I understand that secondary considerations can include, for example,
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`evidence of commercial success of an invention, evidence of a long-felt need that
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`was solved by an invention, evidence that others copied an invention, or evidence
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`that an invention achieved a surprising result. I further understand that such
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`evidence must have a nexus or causal relationship to the elements of a claim in
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`order to be relevant. I am unaware of any such secondary considerations.
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` Claim Construction
`C.
`32.
`It is my understanding that in determining whether a patent claim is
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`anticipated or obvious in view of the prior art, the Patent Office must construe the
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`claim by giving the claim its broadest reasonable interpretation consistent with the
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`specification from the standpoint of a person of ordinary skill in the art. For the
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`purposes of this review, unless otherwise stated, I have construed each claim term
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`11
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`IPR2016-01520
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`in accordance with its plain and ordinary meaning under the required broadest
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`reasonable interpretation.
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`D.
`33.
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`Persons of Ordinary Skill in the Art
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`I believe that the ’635 Patent is addressed to a person of ordinary skill
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`in the art (“POSITA”), i.e., a person of ordinary skill in the art with at least a
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`bachelor’s degree or equivalent in digital electronics, electrical engineering,
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`computer engineering, computer science, or a related technical degree, with 2-5
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`years of post-degree work experience in system engineering (or equivalent). In
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`determining who would be a POSITA, I considered at least the following criteria:
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`(a) the type of problems encountered in the art; (b) prior art solutions to those
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`problems; (c) the rapidity with which innovations are made; (d) the sophistication
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`of the technology; and (e) the education level of active workers in the field.
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`V. BACKGROUND TECHNOLOGY OF THE ’635 PATENT
`34. The’635 Patent comprises the vision of an end-to-end system that can
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`distribute digital information over an analog or digital transmission system from a
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`transmitter station to a receiver station, optionally passing through an intermediate
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`station, and the methods for accomplishing that distribution. The transmitted
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`digital information can be addressed to one or more receiver stations and can
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`include commands, data, signals, computer programs, or encrypted programming.
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`IPR2016-01520
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`35. The digital information so transmitted can be encrypted by its
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`originator, in whole or in part, and decrypted by its receiver using a decryption key
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`sent from the transmitter to the receiver. The decryption key itself can be
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`encrypted and it too can be decrypted by the receiver using information provided
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`by the transmitter.
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`36. The’635 Patent responded to the new possibilities opened up as
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`transmission of digital content, instead of analog content, became more
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`technologically feasible. The’635 Patent describes an entirely new signal-
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`processing system having multiple layers of transmitter station devices that are
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`able to control addressable receiver devices in large networks.
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`37. The patented inventions addressed problems in the prior art by
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`recognizing the significant improvements that could be accomplished if receivers
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`could communicate with other devices in a network; if transmitters could control
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`receivers such as, for example, by sending control instructions in the same
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`information stream as programming content; and if receivers could use those
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`control instructions to identify content addressed to individual users and to carry
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`out controlled operations specific to a receiver device. Such a network, employing
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`distributed computing and control, is able to provide customized user content,
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`other new and useful types of content, and new modes of delivering that content.
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`But such a system is enormously more complex than the one-to-many distribution
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`structures in the prior art.
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`38. The’635 Patent discloses methods and apparatuses for addressing
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`specific technical issues that arose for the first time in the context of the inventors’
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`systems and methods for distributing personalized media content in a networked
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`environment.
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`39. The layered signal decryption technology claimed in the’635 Patent –
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`which allows encrypted content to be transmitted along with encrypted digital
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`control signals and requires decryption of the digital control signals first in order to
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`unlock the encrypted content – was initially conceived to inhibit piracy of TV
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`content delivered in a cable, satellite or other networked system.
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`40. At the time of the inventions of the’635 Patent, the secure delivery of
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`programming content along with related control signals to control or enable
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`specific signal processing operations at remote receiver stations was a technical
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`challenge particular to a distributed computing environment such as, for example, a
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`cable television network. And, the technical solutions the inventors conceived,
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`developed and patented were novel and unconventional at the time. The patented
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`inventions require specially-programmed equipment to implement various specific
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`applications and functions, such as receiving incoming digital information
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`transmissions, filtering or selecting control signals or other signals or specific
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`content from the incoming information transmissions, and/or decrypting the
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`incoming information transmissions.
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`41. Recognizing the importance of protecting the programming being
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`transmitted, the ’635 Patent discloses a sophisticated embodiment of access
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`control, allowing for the delivery of personalized content to subscriber stations in a
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`secure manner through unique encryption techniques. For instance, the conditional
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`access technology claimed by the patents allows encrypted content to be
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`transmitted along with encrypted digital control signals and requires decryption of
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`the digital control signals first in order to unlock the encrypted content. The digital
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`information so transmitted can be encrypted by its originator, in whole or in part,
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`and decrypted by its receiver using decryption key information (e.g., the
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`decryption key(s), or the location of the key(s), or a method of calculating a key)
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`sent from the transmitter to the receiver. The decryption key information can itself
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`be encrypted and it too can be decrypted by the receiver using information
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`provided by the transmitter or stored at the receiver.
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`42. FIG. 4A of the application that the ’635 Patent claims priority to, U.S.
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`Appl. No. 317,510, which issued as U.S. Patent 4,694,490 (the “’490 Patent”)
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`shows a receiver station’s signal processor, 100, and a programing decrypter and/or
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`interrupt means, 101, each of which receives the transmissions of programing. Ex.
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`1004 at 13:12-15. The devices, 100 and 101, may receive one channel of
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`programing or multiple channels. The ’490 Patent describes that transmissions
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`received at these receiver stations may contain “code or codes necessary for the
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`decryption of the transmission.” Ex. 1004 at 13:31-32. FIG. 4D shows that a
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`multi-stage decryption/interruption process may be used in which transmissions
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`must be processed by one or more additional decryptor /interruptors, 111, that
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`follow decryptor/interruptor, 110:
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`43. The ’490 Patent further describes that the receiver station’s “signal
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`processors, 100, 103, 106, 109, and 112, could also operate in a predetermined
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`fashion and telephone a remote site to get an additional signal or signals necessary
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`for the proper decryption and/or transfer of incoming programing transmissions.”
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`Ex. 1004 at 15:21-25. See also, e.g., FIG. 1 (telephone connection 22 with digital
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`recorder 16).
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`44. The receiver station further receives and processes encrypted content
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`through cable transmissions. Ex. 1004 at 6:30-32. FIG. 2A, for example, shows a
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`decoder capable of receiving cable transmissions on different channels. The
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`decoder forwards transmissions on one of three paths. The detectors of each path
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`“are designed to act on the particular frequency ranges in which the encoded
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`information may be found.” Ex. 1004 at 6:42-7:5. “Path C inputs the separately
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`defined transmission to a digital detector, 38.” In contrast, analog television and
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`audio transmissions containing embedded digital data are forwarded to paths A and
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`B. Id.
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`45. Through the disclosed access control system, the ’635 Patent allows
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`users at these receiver stations to access materials through purchases or other
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`means. For example, in one of the many examples provided, the disclosed
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`invention allows a user to purchase, receive, decrypt, and output a printed cooking
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`recipe:
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`Suppose a viewer watches a television program on cooking techniques
`that is received on TV set, 202, via box, 201. Julia Childs's "The
`French Chef” is one such program. Halfway through the program, the
`host says, “If you are interested in cooking what we are preparing here
`and want a printed copy of the recipe for a charge of only 10 cents,
`press 567 on your Widget Signal Generator and Local Input.” The
`viewer then presses buttons 567 on local input, 225, which signal is
`conveyed to the buffer/comparator, 8 (referring to FIG. 1), of signal
`processor, 200, to hold and process further in a predetermined fashion.
`Five minutes later, a signal is identified in the incoming programing
`on TV set, 202, by decoder, 203, which is also transferred by
`processor, 204, to buffer/comparator, 8, of signal processor, 200. This
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`signal instructs buffer/comparator, 8, that, if 567 has been received
`from signal generator, 225, signal processor, 200, should, in a
`predetermined fashion, instruct tuner, 223, to tune cable converter
`box, 222, to the appropriate channel to receive the recipe in encoded
`digital form and instruct control means, 226, to activate printer, 221.
`The signal transmission from processor, 204, also passes a signal
`word to signal processor, 200, which, in a predetermined fashion,
`signal processor, 200, decrypts and transfers to decrypter, 224, to
`serve as the code upon which decrypter, 224, will decrypt the
`incoming encrypted recipe. … When the transmission of the recipe is
`received, box 222, transfers the transmission to decrypter, 224, for
`decryption and thence to printer, 221, for printing.
`Ex. 1004 at 20:16-50.
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`46. At the time of the inventions, the secure delivery of programming
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`content along with related control signals to control or enable specific signal
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`processing operations at remote rece