`571.272.7822
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`Paper 10
`Entered: March 14, 2017
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`UNITED STATES PATENT AND TRADEMARK OFFICE
`____________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`____________
`
`UNIFIED PATENTS INC.,
`Petitioner,
`
`v.
`
`DIGITAL STREAM IP, LLC,
`Patent Owner.
`____________
`
`Case IPR2016-01749
`Patent 6,757,913 B2
`____________
`
`
`
`
`
`Before MICHAEL J. FITZPATRICK, STACEY G. WHITE, and
`MICHELLE N. WORMMEESTER, Administrative Patent Judges.
`
`WORMMEESTER, Administrative Patent Judge.
`
`DECISION
`Institution of Inter Partes Review
`37 C.F.R. § 42.108
`
`
`
`
`
`
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`IPR2016-01749
`Patent 6,757,913 B2
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`Unified Patents Inc. (“Petitioner”) filed a Petition (Paper 3, “Pet.”)
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`requesting inter partes review of claims 1–4, 6–13, 20, and 22 of U.S. Patent
`
`No. 6,757,913 B2 (Ex. 1001, “the ’913 patent”). Digital Stream IP, LLC
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`(“Patent Owner”) did not file a Preliminary Response. We have jurisdiction
`
`under 35 U.S.C. § 314 and 37 C.F.R. § 42.4(a). Under 35 U.S.C. § 314(a),
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`an inter partes review may not be instituted “unless . . . there is a reasonable
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`likelihood that the petitioner would prevail with respect to at least 1 of the
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`claims challenged in the petition.” For the reasons that follow, we institute
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`an inter partes review as to all challenged claims of the ’913 patent.
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`
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`I. BACKGROUND
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`A. Related Proceedings
`
`The parties identify the following federal district court cases involving
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`the ’913 patent: (1) Digital Stream IP LLC v. Nissan North America, Inc.,
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`No. 2:16-cv-00698 (E.D. Tex.); (2) Digital Stream IP LLC v. General Motors
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`LLC, No. 2:16-cv-00204 (E.D. Tex.); (3) Digital Stream IP LLC v.
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`Mercedes-Benz USA, LLC, No. 2:16-cv-00981 (E.D. Tex.); and (4) Digital
`
`Stream IP LLC v. BMW of North America, LLC, No. 2:16-cv-00982 (E.D.
`
`Tex.). Pet. 1; Paper 5, 2.
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`
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`B. The ’913 patent
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`The ’913 patent describes a system for local wireless transmission and
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`reception of digital audio and program information. Ex. 1001, at [54], 4:67–
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`5:1. Figure 1, which is reproduced below, illustrates such a system.
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`In particular, Figure 1 is a schematic representation of a transmitter and
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`receiver/tuner system. Id. at 3:48–50. Digital data distribution system 10
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`outputs to transmitter 100 serial digital data stream 22, which contains a
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`plurality of digital audio and program information signals. Id. at 4:16–20,
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`5:1–5. The digital audio signal may represent music, while the program
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`information signal may represent information about the composer, the track
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`title, the artist, and the associated album. Id. at 2:60, 8:9–12. Transmitter 100
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`converts the digital audio and program information signals into digital RF
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`carrier frequencies and broadcasts them to multiple devices, including
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`receiver/tuner 200. Id. at 5:5–12.
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`An example of a receiver/tuner is shown in Figure 3, which is
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`reproduced below.
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`Patent 6,757,913 B2
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`Figure 3 is a top plan view of a receiver/tuner. Id. at 3:54–56. A user can
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`press the number keys to select one of the digital audio and program
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`information channels transmitted by transmitter 100. Id. at 7:29–33. Once the
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`user makes a selection, the receiver/tuner electronically outputs the selected
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`audio and displays the corresponding program information for the selected
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`audio track. Id. at 5:13–15.
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`
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`C. Illustrative Claim
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`Petitioner challenges claims 1–4, 6–13, 20, and 22 of the ’913 patent.
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`Claims 1 and 20 are independent. Claim 1 is illustrative of the claims under
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`challenge:
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`1. A wireless digital audio transceiver for receiving a locally
`broadcast digital audio signal wherein the digital audio signal
`comprises a plurality of carrier waves to carry digital audio data
`and audio program information, the transceiver comprising:
`
`a user interface to enable a user to select digital audio data
`from a plurality of digital audio data within the digital
`audio signal;
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`a tuner operably coupled to the user interface to tune to a
`frequency associated with a carrier wave containing the
`selected digital audio data;
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`a demodulator coupled to the tuner to extract the selected
`digital audio data and the audio program information from
`the carrier wave; and
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`a digital to analog converter to convert the selected digital
`audio data into an analog signal and to send the analog
`signal to an output for playback to the user.
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`D. Asserted Grounds of Unpatentability
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`Petitioner challenges claims 1–4, 6–13, 20, and 22 of the ’913 patent
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`on the following grounds. Pet. 3, 10–67.
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`References
`Schotz1 and Rovira2
`Kostreski3 and Streck4
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`Basis
`§ 103
`§ 103
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`Claims Challenged
`1–3, 6–13, 20, and 22
`1, 2, 4, 6, 7, 9, and 10
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`As additional support, Petitioner proffers the Declaration of Daniel J. Stark
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`(Ex. 1006). See id.
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`
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`E. Claim Interpretation
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`We construe claims in an unexpired patent by applying the broadest
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`reasonable interpretation in light of the specification of the patent in which
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`they appear. See 37 C.F.R. § 42.100(b); Cuozzo Speed Techs. LLC v. Lee,
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`136 S. Ct. 2131, 2144–46 (2016) (upholding the use of the broadest
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`reasonable interpretation standard). Under this standard, claim terms
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`generally are given their ordinary and customary meaning, as would be
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`understood by one of ordinary skill in the art in the context of the entire
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`disclosure. See In re Translogic Tech., Inc., 504 F.3d 1249, 1257 (Fed. Cir.
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`2007).
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`Petitioner provides a proposed interpretation of the claim term
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`“transceiver.” Pet. 10. For purposes of this Decision, we conclude that no
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`term requires express interpretation at this time to resolve any controversy in
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`this proceeding.
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`
`1 Schotz, U.S. Patent No. 5,491,839, issued Feb. 13, 1996 (Ex. 1002).
`2 Rovira, U.S. Patent No. 5,406,558, issued Apr. 11, 1995 (Ex. 1003).
`3 Kostreski, U.S. Patent No. 5,651,010, issued July 22, 1997 (Ex. 1004).
`4 Streck, U.S. Patent No. 5,101,499, issued Mar. 31, 1992 (Ex. 1005).
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`5
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`II. DISCUSSION
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`A. Obviousness over Schotz and Rovira
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`Petitioner asserts that claims 1–3, 6–13, 20, and 22 of the ’913 patent
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`would have been obvious over Schotz and Rovira. Pet. 10–45. For the
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`reasons explained below, we are persuaded that Petitioner has demonstrated
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`a reasonable likelihood of prevailing on its asserted ground.
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`
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`1. Schotz
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`Schotz describes a transmitter/receiver system such as the one shown
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`in Figure 1, which is reproduced below.
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`
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`Figure 1 shows a transmitter/receiver system with transmitter 4 and
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`receiver 6. After receiving left and right audio signals from audio sources
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`#1, #2, and #3, transmitter 4 transmits a combined audio signal to receiver 6.
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`Ex. 1002, 3:50–52, 4:9–10. The combined audio signal is composed of three
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`distinct channel carrier frequencies. Id. at 4:25–32. Schotz’s system
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`provides for ten groups of three distinct carrier frequencies. Id. at 4:33–35,
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`tbl.II. A user may select one of the ten groups by setting transmitter and
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`6
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`Patent 6,757,913 B2
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`receiver house code select switches 10, 16 to the same setting, and then
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`further select one of the three carrier signals in that group by setting channel
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`select switch 18. Id. at 4:36–41. Once the user completes a selection,
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`receiver 6 processes the selected signal and converts it into the original
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`audio source’s left and right audio signals. Id. at 4:43–47. Audio output
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`connection 22 provides the user with left and right audio output of the
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`selected channel. Id. at 4:9–11.
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`
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`2. Rovira
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`Rovira describes a system for communicating program data signals
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`that are combined with digital data signals. Ex. 1003, at [57] (Abstract).
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`The system receives and compresses a plurality of digital audio signals,
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`multiplexes them with program data signals such as title, track, artist, record
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`label, and year, and then transmits the combined signals to a receiving
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`station. Id. The receiving station demultiplexes the signals and sends them
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`to a user’s digital music tuner. Id. The tuner further demultiplexes and
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`decodes the signals so that the digital audio signals can be converted into
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`analog signals and output for listening, while the corresponding program
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`data signals are communicated to the user. Id.
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`
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`3. Analysis
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`The preamble of claim 1 recites “[a] wireless digital audio transceiver
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`for receiving a locally broadcast digital audio signal wherein the digital
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`audio signal comprises a plurality of carrier waves to carry digital audio data
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`and audio program information.” With respect to this recitation, Petitioner
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`directs us to where Schotz describes a receiver 6 with an antenna 20, which
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`7
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`receives a combined audio signal made up of three distinct channel carrier
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`frequencies. Pet. 19–20 (citing Ex. 1002, 4:25–33, 4:36–48, Fig. 1); see also
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`Ex. 1002, 5:5–11 (“the system may be modified for the purpose of replacing
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`the costly wiring in a computer network system with the ability to transmit
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`digital data signals over the air”). The signal may be a digital stereophonic
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`audio signal. Pet. 20 (citing Ex. 1002, 5:1–4). While Petitioner shows that
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`Schotz’s signal carries “audio data,” Petitioner does not indicate that the
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`signal also carries “audio program information,” as required by claim 1. See
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`id.; Ex. 1001, 9:66 (reciting both “audio data” and “audio program
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`information” in the body of claim 1). For this limitation, Petitioner directs
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`us instead to Rovira, which teaches providing digital audio signals from CD
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`players along with program data such as title, track, artist, publisher,
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`composer, song identification, and play time information blocks for each
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`song on a CD. Pet. 20–21 (citing Ex. 1003, 4:55–58, 6:5–8).
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`Claim 1 further recites that the transceiver comprises “a user interface
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`to enable a user to select digital audio data from a plurality of digital audio
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`data within the digital audio signal” as well as “a tuner operably coupled to
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`the user interface to tune to a frequency associated with a carrier wave
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`containing the selected digital audio data.” For these limitations, Petitioner
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`identifies Schotz’s channel select switch 18 as a “user interface” and
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`Schotz’s channel synthesizer as a “tuner.” Pet. 23–24 (citing Ex. 1002,
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`4:39–42, 7:45–54, Fig. 1). Petitioner additionally identifies Rovira’s tuner
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`110 as a “tuner.”
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`Claim 1 further recites that the transceiver comprises “a demodulator
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`coupled to the tuner to extract the selected digital audio data and the audio
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`program information from the carrier wave.” For this limitation, Petitioner
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`8
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`identifies Schotz’s second user-selectable means as a “demodulator.”
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`Pet. 26 (citing Ex. 1002, 2:53–57). Petitioner notes that “Schotz, however,
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`does not explicitly disclose a demodulator coupled to the tuner to extract the
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`audio program information from the carrier wave.” Id. Thus, Petitioner
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`directs us to Rovira, which teaches providing demodulator 125 coupled to
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`tuner 110. Id. (citing Ex. 1003, 8:27–33, Fig. 5).
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`Lastly, claim 1 recites “a digital to analog converter to convert the
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`selected digital audio data into an analog signal and to send the analog signal
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`to an output for playback to the user.” For this limitation, Petitioner relies
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`on Rovira, identifying digital to audio converter 160 as a “digital to analog
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`converter.” Pet. 28 (citing Ex. 1003, 8:49–53).
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`In addition to showing that Schotz and Rovira teach each of the claim
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`limitations, Petitioner must provide “some articulated reasoning with some
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`rational underpinning to support the legal conclusion of obviousness.” See
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`In re Kahn, 441 F.3d 977, 988 (Fed. Cir. 2006); see also KSR Int’l Co. v.
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`Teleflex Inc., 550 U.S. 398, 418 (2007). In that regard, Petitioner directs us
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`to Rovira’s teaching that “it is highly desirable to communicate program
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`content information” because “having such information as music title,
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`composer, artist and record label is vital” to music lovers. Pet. 16 (citing Ex.
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`1003, 1:30–32, 2:5–10); see also Ex. 1003, 1:32–35 (“Frustration of
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`customers, and possible loss of revenue due to subscription cancellation can
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`occur if a subscriber has no method of knowing the title, composer or artist
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`of the particular selection of music.”). Accordingly, Petitioner argues, it
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`would have been obvious to modify Schotz’s system to incorporate a signal
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`that includes both audio data and program data, as taught by Rovira. Pet. 17;
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`see also, e.g., id. at 21 (“[O]ne would have been motivated to (1) modify
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`Schotz’s transmitter 4 to transmit the digital audio signal of Rovira . . . and
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`(2) modify Schotz’s receiver 6 to receive this digital audio signal.”); id. at 23
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`(“[T]his modification would result in Schotz’s user interface switch 18
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`selecting the digital audio data . . . within the digital audio signal [of
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`Rovira].”); id. at 25 (“It would have been obvious to utilize the tuner 110 of
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`Rovira in Schotz for [tuning] to frequencies that Schotz is receiving based
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`on its use of Rovira’s digital audio signal. . . . Schotz is essentially doing this
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`already, i.e., tuning to a frequency associated with audio data.”); id. at 27
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`(“[I]t would have been obvious to modify Schotz to utilize Rovira’s
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`disclosed demodulator 125 to extract the selected digital audio data and the
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`audio program information from the carrier wave, as taught by Rovira.”); id.
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`at 28–29 (“It would have been obvious to modify Schotz to include the
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`digital to analog converter 160 disclosed in Rovira. . . . The receiver 6 of
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`Schotz would necessarily need a digital to analog converter when using the
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`digital signals disclosed in Rovira so that the user can hear the selected
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`music.”).
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`Based on the record before us, at this stage of the proceeding, we are
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`persuaded by Petitioner’s proffered reasoning for modifying Schotz’s system
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`to include Rovira’s signal. See Kahn, 441 F.3d at 988. Moreover, “[a]
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`person of ordinary skill is also a person of ordinary creativity, not an
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`automaton,” and would, in light of modifying Schotz’s system to include
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`Rovira’s signal, make any necessary additional modifications such that the
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`various components of Schotz’s system could process appropriately Rovira’s
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`signal. See KSR, 550 U.S. at 421.
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`In view of the foregoing, we determine that Petitioner has
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`demonstrated a reasonable likelihood of prevailing on its assertion that
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`claim 1 would have been obvious over Schotz and Rovira. Having reviewed
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`Petitioner’s arguments asserting that independent claim 20 as well as
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`dependent claims 2, 3, 6–13, and 22 would have been obvious over Schotz
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`and Rovira, (see Pet. 29–39, 45), we also determine that Petitioner has
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`demonstrated a reasonable likelihood of prevailing on its assertion as to
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`these claims.
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`B. Obviousness over Kostreski and Streck
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`Petitioner asserts that claims 1, 2, 4, 6, 7, 9, and 10 of the ’913 patent
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`would have been obvious over Kostreski and Streck. Pet. 46–67. For the
`
`reasons explained below, we are persuaded that Petitioner has demonstrated
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`a reasonable likelihood of prevailing on its asserted ground.
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`
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`1. Kostreski
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`Kostreski describes a system for distributing RF channels, each
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`carrying a digital transport stream with data relating to multiple television
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`programs. Ex. 1004, 1:6–12, 7:46–51. The programs contain audio, video,
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`and closed captioning information. Id. at 7:52–54.
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`A diagram of Kostreski’s system is shown in Figure 7, which is
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`reproduced below.
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`Figure 7 shows the functional elements of the system’s receiver portion,
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`which may be located at a user’s home. Id. at 6:29–31, 12:60–61. Each of
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`transmitters TX1 through TXN simultaneously broadcasts a combined ultra
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`high frequency (UHF) signal containing all the RF channels to receiving
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`antenna 31. Id. at 6:47–48, 13:4–13. Receiving antenna 31 supplies the
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`combined signal to block downconverter 33, which converts the signal down
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`to the video channel band. Id. at 13:28–32. Block downconverter 33
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`supplies the down converted combined signal via a coaxial cable to one or
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`more terminal devices 100, which are located at various places throughout
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`the user’s home. Id. at 13:32–36. Each terminal device 100 includes an
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`infrared receiver that responds to user input signals from a remote control
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`device. Id. at 16:1–3. The user may input a command to select a broadcast
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`program. See id. at 16:15–17. Once the user makes a selection, wireless
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`signal processor 35 processes the selected channel to recover the digital
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`transport stream carried in that channel. Id. at 13:36–39. Digital signal
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`processer 37 processes data packets for the selected program from the stream
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`to produce signals to drive TV 100′. Id. at 13:40–42. TV 100′ presents the
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`program to the user as a standard audio/visual output. Id. at 13:43–45.
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`2. Streck
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`Streck describes a wireless local television transmission system. Ex.
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`1005, at [57] (Abstract). Streck’s system eliminates the necessity for any
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`kind of physical interconnections, such as coaxial cables. Id. at 3:17–21; see
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`id. at 1:39–45 (identifying problems arising from the use of coaxial cables).
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`
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`3. Analysis
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`For claim 1, Petitioner relies primarily on Kostreski. See Pet. 55–64.
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`For example, Petitioner identifies Kostreski’s terminal 100 as a
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`“transceiver.” Id. at 57. Terminal 100 receives a signal containing multiple
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`RF channels, each channel carrying digital data representing four programs.
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`Id. (citing Ex. 1004, 9:57–58, 5:18–32, 13:31–33). The programs contain
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`video and audio information, as well as data information for closed
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`captioning. Id. at 58 (citing Ex. 1004, 7:52–54). Petitioner also identifies
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`Kostreski’s infrared receiver 145 as a “user interface,” tuner 201 as a
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`“tuner,” DEMOD as a “demodulator,” and each of digital to analog
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`converters 135 as a “digital to analog converter.” Id. at 59–64; see also Ex.
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`1004, Figs. 7–9.
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`According to Petitioner, Kostreski’s terminal 100 is arguably not
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`“wireless,” as recited in the preamble of claim 1. Pet. 55. Petitioner notes
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`that terminal 100 includes a wireless signal processor, but Petitioner also
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`points out that Kostreski’s system uses a coaxial cable to deliver the signal.
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`Id. at 52 (citing Ex. 1004, 13:32–39), 56 (citing Ex. 1004, Fig. 7). Thus, for
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`the “wireless” limitation, Petitioner relies additionally on Streck, which
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`provides a system for the wireless local broadcasting of video signals. Id. at
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`52–56; Ex. 1005, 3:17–22 (cited at Pet. 53).
`
`As mentioned above, in addition to showing that Streck teaches a
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`wireless system for broadcasting signals, Petitioner must provide “some
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`articulated reasoning with some rational underpinning to support the legal
`
`conclusion of obviousness.” See Kahn, 441 F.3d at 988; see also KSR, 550
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`U.S. at 418. In that regard, Petitioner directs us to where Streck teaches that
`
`using a wired system can often result in a tangled web of coaxial cables
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`connected between signal splitters, A-B switches, cable select boxes, VCRs,
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`and TV sets. Pet. 52–53 (citing Ex. 1005, 1:38–50). Petitioner further
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`argues that “one would have been motivated to implement the wireless
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`teachings of Streck in the system of Kostreski” in order “to avoid needing to
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`use coaxial cables to distribute the received signal to user devices located
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`throughout the home.” Id. at 53, 55. Based on the record before us, at this
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`stage of the proceeding, we are persuaded by Petitioner’s proffered
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`reasoning for modifying Kostreski’s system to provide a wireless terminal
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`100 based on Streck’s teachings. See Kahn, 441 F.3d at 988.
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`In view of the foregoing, we determine that Petitioner has
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`demonstrated a reasonable likelihood of prevailing on its assertion that
`
`claim 1 would have been obvious over Kostreski and Streck. Having
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`reviewed Petitioner’s arguments asserting that dependent claims 2, 4, 6, 7, 9,
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`and 10 would have been obvious over Kostreski and Streck, (see Pet. 64–
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`67), we also determine that Petitioner has demonstrated a reasonable
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`likelihood of prevailing on its assertion as to these claims.
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`III. CONCLUSION
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`For the foregoing reasons, we are persuaded that Petitioner has
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`demonstrated a reasonable likelihood that it would prevail in showing that
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`claims 1–4, 6–13, 20, and 22 of the ’913 patent are unpatentable. We have
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`not, however, made a final determination with respect to the patentability of
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`these claims.
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`IV. ORDER
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`For the reasons given, it is
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`ORDERED that inter partes review is instituted as to claims 1–4, 6–
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`13, 20, and 22 of the ’913 patent based on the following grounds:
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`A. Obviousness under 35 U.S.C. § 103 of claims 1–3, 6–13, and 22
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`over Schotz and Rovira;
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`B. Obviousness under 35 U.S.C. § 103 of claims 1, 2, 4, 6, 7, 9, and
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`10 over Kostreski and Streck;
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`FURTHER ORDERED that no other grounds of unpatentability are
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`authorized for an inter partes review as to any claim of the ’913 patent; and
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`FURTHER ORDERED that pursuant to 35 U.S.C. § 314(c) and
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`37 C.F.R. § 42.4, notice is hereby given of the institution of a trial; the trial
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`will commence on the entry date of this decision.
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`PETITIONER:
`
`David Cavanaugh
`david.cavanaugh@wilmerhale.com
`
`Dan Williams
`daniel.williams@wilmerhale.com
`
`Jonathan Stroud
`jonathan@unifiedpatents.com
`
`
`
`PATENT OWNER:
`
`Tarek Fahmi
`tarek.fahmi@ascendalaw.com
`
`Jason LaBerteaux
`jason.laberteaux@ascendalaw.com
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