`Estech Systems, Inc.
`Patent Owner
`( J u l y 1 2 , 2 0 2 2 )
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`RingCentral, Inc. v. EstechSystems, Inc., I P R 2 0 2 1 - 0 0 5 7 4
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`IPR2021-00574
`GTP EX 2014 Page 1
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`Petitioner’s Unpatentability Grounds.
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`2
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`Paper 1 at 7.
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`’298 Patent: “Phone Directory in a Voice Over IP Telephone System”
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`3
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`Ex. 1001, Fig. 3.
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`Independent Claim 1
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`4
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`Chang does not disclose a “telecommunications device” (Claim 1[e]).
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`5
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`Petitioner concedes that the telephone is not coupled to Chang’s LAN.
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`6
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`Paper 1 at 23-24 (emphasis added).
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`Petitioner concedes that the telephone is not coupled to Chang’s LAN.
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`7
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`Paper 1 at 23-24 (emphasis added
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`Chang’s workstation is not a “telecommunications device.”
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`Ex. 1003, 5:28-32.
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`8
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`Chang’s workstation is not a “telecommunications device.”
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`Ex. 1003, 37:22-25.
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`Ex. 1003, 57:18-21.
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`9
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`Chang’s physically separate telephone and workstation are not a
`“telecommunications device.”
`Petitioner did not argue that it would have been obvious to
`combine the telephone and workstation into a device.
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`10
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`Paper 1 at 28.
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`Claim 1[h] requires storing the second-LAN and third-LAN lists in a server in
`the second LAN.
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`• Patent Owner: “the
`list…” is the list observed
`by the user of first
`telecommunications
`device.
`• Petitioner: “the list…” is
`the list of
`telecommunications
`extensions coupled to
`the second LAN.
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`11
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`Petitioner’s interpretation of claim 1[h] would limit dependent claims 3 and 6
`to displaying/playing only the second-LAN list.
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`12
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`Petitioner’s characterization of Chang confirms that Ground 1 does not
`render obvious claim 1[h] under Patent Owner’s interpretation.
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`13
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`Paper 1 at 39.
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`Petitioner’s characterization of Chang confirms that Ground 1 does not
`render obvious claim 1[h] under Patent Owner’s interpretation.
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`14
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`Paper 1 at 39.
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`Ground 1 does not render obvious claim 1[h] under Patent Owner’s
`interpretation.
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`15
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`Ex. 1003, Fig. 3A.
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`Petitioner’s characterization of Byrne confirms that Ground 1 does not
`render obvious claim 1[h] under Patent Owner’s interpretation.
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`16
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`Paper 1 at 40.
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`Ground 1 does not render obvious claim 1[h] under Patent Owner’s
`interpretation.
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`17
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`Ex. 1004, Fig. 1.
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`Neither Chang nor Byrne discloses does not discloses selecting between
`second-LAN and third-LAN lists.
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`18
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`Petitioner concedes that Chang does not disclose limitation 1[i].
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`Paper 1 at 43.
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`Byrne does not disclose limitation 1[i].
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`20
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`Ex. 1004, Fig. 4.
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`Byrne does not disclose limitation 1[i].
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`21
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`Ex. 1004, Fig. 9.
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`Dependent Claim 4
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`22
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`Chang does not disclose an “IP telephone.”
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`23
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`Petitioner identified only
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`Chang’s workstation as the “IP telephone.”
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`24
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`Paper 1 at 47-48 (emphasis added).
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`Petitioner identified only
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`Chang’s workstation as the “IP telephone.”
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`Paper 1 at 48.
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`25
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`Paper 1 at 48-49.
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`Petitioner’s new argument in reply is improper.
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`Paper 1 at 47-48 (emphasis added).
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`26
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`Paper 18 at 19.
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`An IP telephone must “communicate multimedia traffic using IP telephony
`technology.”
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`Paper 13 at 31.
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`27
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`Chang’s workstation does not “communicate multimedia traffic using IP
`telephony technology.”
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`Ex. 1003, 5:28-32.
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`28
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`Chang’s workstation does not “communicate multimedia traffic using IP
`telephony technology.”
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`Ex. 1003, 37:22-25.
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`Ex. 1003, 57:18-21.
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`Chang’s workstation does not “communicate multimedia traffic using IP
`telephony technology.”
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`30
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`Paper 13 at 31.
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`Independent Claim 8
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`31
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`Chang does not disclose an “IP telephone” (Claim 8[b]).
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`IPR2021-00574
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`Petitioner identified only
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`Chang’s workstation as the “IP telephone.”
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`33
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`Paper 1 at 54 (emphasis added).
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`Independent Claim 17
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`34
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`Chang does not disclose an “IP telephone” (Claim 17[a]).
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`35
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`IPR2021-00574
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`Petitioner identified only
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`Chang’s workstation as the “IP telephone.”
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`Paper 1 at 59 (emphasis added).
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`36
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`Thank you.
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