`Tel: 571-272-7822
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`
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`Paper 9
`Entered: November 2, 2022
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`UNITED STATES PATENT AND TRADEMARK OFFICE
`
`
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`
`
`
`
`
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`
`APPLE INC.,
`Petitioner,
`
`v.
`
`TELEFONAKTIEBOLAGET LM ERICSSON,
`Patent Owner.
`
`IPR2022-00648
`Patent 9,860,044 B2
`
`
`Before NATHAN A. ENGELS, SHARON FENICK, and
`STEPHEN E. BELISLE, Administrative Patent Judges.
`
`ENGELS, Administrative Patent Judge.
`
`
`
`
`DECISION
`Granting Institution of Inter Partes Review
`35 U.S.C. § 314
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`IPR2022-00648
`Patent 9,860,044 B2
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`I.
`
`INTRODUCTION
`
`A. Background
`Apple Inc. (“Petitioner”) filed a Petition requesting an inter partes
`review of claims 1–11, 15–27, and 33–41 of U.S. Patent No. 9,860,044 B2
`(Ex. 1001, “the ’044 patent”). Paper 1, 1 (“Pet.”). Petitioner also filed the
`Declaration of Apostolos K. Kakaes, Ph.D. in support of the Petition.
`Ex. 1003. Telefonaktiebolaget LM Ericsson (“Patent Owner”) filed a
`preliminary response. Paper 8 (“Prelim. Resp.”).
`As stated in 35 U.S.C. § 314, an inter partes review may not be
`instituted unless it is determined that “the information presented in the
`petition . . . shows that there is a reasonable likelihood that the petitioner
`would prevail with respect to at least 1 of the claims challenged in the
`petition.” For the reasons below, we determine the information presented in
`the Petition shows a reasonable likelihood that Petitioner would prevail in
`showing the unpatentability of at least one claim of the ’044 patent, and we
`institute inter partes review.
`
`B. Real Parties in Interest
`Petitioner states that Apple Inc. is the real party in interest. Pet. 82.
`Patent Owner states that Telefonaktiebolaget LM Ericsson and Ericsson Inc.
`are the real parties in interest. Paper 3, 2.
`
`C. Related Proceedings
`The parties do not identify any related matters. Pet. 82; Paper 3, 2.
`
`D. The ’044 Patent (Ex. 1001)
`The ’044 patent describes systems and methods for implementing
`carrier aggregation in mobile communication systems. Ex. 1001, 1:16–30,
`code (57). In particular, the ’044 patent describes “an efficient resource
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`allocation for the physical uplink control channel for carrier aggregation.”
`Ex. 1001, 1:18–19.
`The ’044 patent states that then-current Long Term Evolution
`(“LTE”) technology included LTE Release 8 (“Rel 8”) with bandwidths up
`to 20 MHz using single component carriers, but that a then-proposed LTE
`Release 10 (“LTE-Advanced” or “LTE-A”) would allow aggregation of
`multiple component carriers to achieve bandwidths up to 100 MHz (e.g.,
`five LTE Rel 8 20 MHz component carriers). Ex. 1001, 1:23–30, 8:14–22,
`Fig. 8; Ex. 1003 ¶ 41. “In order to support bandwidths greater than 20 MHz,
`carrier aggregation will be supported in LTE Rel 10. To maintain backward
`compatibility with Rel 8 user terminals . . ., the available spectrum is divided
`into Rel-8 compatible component carriers (e.g., 20 Mhz component
`carriers) . . . .” Ex. 1001, 8:14–18.
`One consideration for carrier aggregation is how to configure the
`physical uplink control channel (“PUCCH”) for uplink (“UL”) control
`signaling from user equipment (“UE”). Ex. 1001, 8:37–39. According to
`some embodiments of the ’044 patent, the PUCCH resources on a single UL
`component carrier are used to support downlink (“DL”) transmissions on
`several downlink component carriers. Ex. 1001, 8:47–50.
`
`E. Representative Claim
`Of the challenged claims, claims 1, 17, 18, and 33 are independent
`claims. Claim 1 is reproduced below, with numbering added to reflect the
`limitation numbering in the parties’ briefs.
`
`1. A method implemented by a base station of receiving
`control information from a user terminal, the method
`comprising:
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`[1.1] scheduling downlink transmissions to a first user terminal
`only on a single downlink component carrier associated
`with a primary cell and scheduling downlink
`transmissions to a second user terminal on multiple
`downlink component carriers or on a downlink
`component carrier associated with a non-primary cell;
`[1.2] receiving, on a first set of radio resources, control
`information associated with the downlink transmissions
`to the first user terminal, wherein the first set of radio
`resources is reserved for a user terminal scheduled to
`receive downlink transmissions only on a single
`downlink component carrier associated with the primary
`cell; and
`[1.3] receiving, on a second set of radio resources, control
`information associated with the downlink transmissions
`to the second user terminal, wherein the second set of
`radio resources is reserved for a user terminal scheduled
`to receive downlink transmissions on multiple downlink
`component carriers or on a downlink component carrier
`associated with a non-primary cell, the first and second
`sets of radio resources being on a same uplink component
`carrier associated with the primary cell.
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`F. Asserted Challenges to Patentability
`Petitioner challenges the patentability of claims 1–11, 15–27,
`and 33–41 of the ’044 patent on the following grounds:
`
`Claim(s) Challenged
`
`35 U.S.C. §
`
`1–11, 15–27, 33–41
`
`1031
`
`1–11, 15–27, 33–41
`
`103
`
`References/Basis
`Motorola,2 TS36.211,3
`TS36.2134
`
`Motorola, TS36.211, TS36.213,
`TR36.9125
`
`II. ANALYSIS
`
`A. Obviousness
`A claim is unpatentable as obvious if “the differences between the
`subject matter sought to be patented and the prior art are such that the
`subject matter as a whole would have been obvious at the time the invention
`was made to a person having ordinary skill in the art to which said subject
`matter pertains.” KSR Int’l Co. v. Teleflex Inc., 550 U.S. 398, 406 (2007)
`(quoting 35 U.S.C. § 103(a)). We resolve the question of obviousness based
`on underlying factual determinations, including: (1) the scope and content of
`the prior art; (2) any differences between the prior art and the claims; (3) the
`level of skill in the art; and (4) when in evidence, objective indicia of
`
`
`1 The ’044 patent’s earliest priority date falls before the Leahy-Smith
`America Invents Act (“AIA”), Pub. L. No. 112–29, 125 Stat. 284 (2011),
`took effect. Thus, we apply the pre-AIA version of § 103.
`2 3GPP R1-090792, “Control [Signaling] Design for Supporting Carrier
`Aggregation,” Motorola, RANI#56, February 9–13, 2009. Ex. 1007
`(“Motorola”).
`3 3GPP TS 36.211 v.8.5.0 (2008). Ex. 1009 (“TS36.211”).
`4 3GPP TS 36.213 v.8.5.0 (2008). Ex. 1011 (“TS36.213”).
`5 3GPP TS 36.912 v.9.0.0 (2009). Ex. 1021 (“TS36.912”).
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`nonobviousness. See Graham v. John Deere Co. of Kansas City, 383 U.S. 1,
`17–18 (1966).
`B. Level of Ordinary Skill in the Art
`We review the grounds of unpatentability in view of the
`understanding of a person of ordinary skill in the art at the time of the
`invention. Graham, 383 U.S. at 13, 17. Petitioner contends a person of
`ordinary skill would have had a “Master’s degree in Electrical Engineering,
`Applied Mathematics, Computer Science, Physics, or equivalent and three to
`five years of experience working with wireless digital communication
`systems including the physical layer of such systems.” Pet. 7. Petitioner
`also states that additional education might compensate for less experience
`and vice-versa. Pet. 7 (citing Ex. 1003 ¶¶ 61–66).
`At this stage, Patent Owner does not dispute Petitioner’s proposed
`level of ordinary skill. Prelim. Resp. 7. Petitioner’s proposed level of
`ordinary skill appears reasonable and comports with the level evidenced by
`the ’044 patent and the cited prior art. Therefore, we adopt Petitioner’s
`articulation of the level of ordinary skill for the purposes of this Decision.
`C. Claim Construction
`We construe claims using the same claim construction standard that
`would be used to construe the claim in a civil action under 35 U.S.C.
`§ 282(b), including construing the claim in accordance with the ordinary and
`customary meaning of such claim as understood by one of ordinary skill in
`the art and the prosecution history pertaining to the patent. 37 C.F.R.
`§ 42.100(b) (2021).
`The parties state, and we agree, that no claim terms require express
`construction at this stage. Pet. 9; Prelim. Resp. 9–10. Realtime Data, LLC
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`v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (“The Board is required to
`construe ‘only those terms . . . that are in controversy, and only to the extent
`necessary to resolve the controversy.’”) (quoting Vivid Techs., Inc. v. Am.
`Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)).
`D. Alleged Obviousness Based on Ground 1 & Ground 2
`Regarding the references of Ground 1, Petitioner states “Motorola is
`being used for limitations directed to what is generally known as an
`asymmetric carrier aggregation (e.g., the receiving of DL transmissions at a
`UE over multiple DL carriers)” and “TS36.211 and TS36.213 are being
`applied for teaching [limitations] directed to non-carrier aggregation of DL
`carriers (i.e., receiving DL transmissions at a UE over a single DL carrier).”
`Pet. 14. Describing the differences between Ground 1 and Ground 2,
`Petitioner states that “[t]o the extent Patent Owner argues that a [person of
`ordinary skill] would not have understood Rel-8’s operation to schedule
`downlink transmissions only on a single downlink component, Ground 2
`applies TS36.912, which expressly teaches such.” Pet. 23.
`Our discussion below applies equally to Petitioner’s Ground 1 and
`Ground 2.
`
`Claim 1
`1.
`[1.] A method implemented by a base station of receiving
`control information from a user terminal, the method
`comprising:
`Petitioner states that to the extent the preamble is limiting, Motorola
`discloses a base station within an LTE-Advanced wireless communication
`system that utilizes a PUCCH transmission scheme to support asymmetric
`carrier aggregation for the reception of control information from a user
`terminal (“UE”). Pet. 27–28 (citing Ex. 1007, 5–7; Ex. 1003 ¶¶ 115–116).
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`At this stage, Patent Owner does not rebut Petitioner’s showing for the
`preamble.
`
`[1.1] scheduling downlink transmissions to a first user terminal
`only on a single downlink component carrier associated with a
`primary cell and scheduling downlink transmissions to a
`second user terminal on multiple downlink component carriers
`or on a downlink component carrier associated with a non-
`primary cell;
`Petitioner contends that Motorola teaches an LTE-Advanced base
`station (“BS”) that would interoperate with a legacy LTE Rel-8 UE (the
`“first user terminal”) that does not support carrier aggregation or an LTE-A
`UE operating under non-carrier aggregation mode. Pet. 28. Among other
`things, Petitioner contends Motorola teaches scheduling DL transmission to
`an LTE Rel-8 UE via a single component carrier. Pet. 30 (citing Ex. 1007,
`6; Ex. 1003 ¶ 120). Petitioner also contends Motorola teaches scheduling
`DL transmissions to an LTE-A UE (the “second user terminal”) over two
`component carriers. Pet. 30–32 (citing Ex. 1007, 6, Fig. 4; Ex. 1003 ¶¶ 120–
`124).
`
`At this stage, Patent Owner does not rebut Petitioner’s showing for
`this limitation.
`
`[1.2] receiving, on a first set of radio resources, control
`information associated with the downlink transmissions to the
`first user terminal, wherein the first set of radio resources is
`reserved for a user terminal scheduled to receive downlink
`transmissions only on a single downlink component carrier
`associated with the primary cell; and
`Petitioner contends that an LTE-A BS according to the teachings of
`Motorola that is backward compatible with LTE Rel-8 UEs would receive
`PUCCH uplink control information from the first UE (and from other LTE
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`Rel-8 UEs) on a first set of radio resources. Pet. 34–35 & n.7. Petitioner
`contends that “each LTE Rel-8 UE computes an ‘m’ value that identifies the
`physical resource blocks (PRBs) for its PUCCH, using PUCCH Format 1 or
`Format 2 defined in TS36.211.” Pet 35. Citing Dr. Kakaes, Petitioner states
`that “multiple UEs would share the same ‘m’ values and thus the same
`PUCCH radio resources (PRBs).” Pet. 36 (citing Ex. 1003 ¶¶ 130–134).
`Further, Petitioner states that “a BS would ‘reserve’ radio resources (PRBs)
`for use by certain groups of UEs by selectively configuring them with
`appropriate Format 1 or Format 2 parameters.” Pet. 36; accord Ex. 1003
`¶ 131 (Dr. Kakaes stating “a base station ‘reserves’ or ‘assigns’ physical
`radio resources (PRBs) for use by UEs by selectively configuring them with
`appropriate Format 1 or Format 2 parameters”).
`Patent Owner argues that none of the cited references “actually taught
`or suggested the use of a set of radio resources reserved for a UE scheduled
`to receive downlink transmissions only on a single downlink component
`carrier, as limitation 1.2 requires.” Prelim. Resp. 12; accord Prelim.
`Resp. 17–18 (arguing none of the references “teaches or suggests that a BS
`actually does ‘selectively configure[e] [UEs] with appropriate Format 1 or
`Format 2 parameters’ so that the BS receives uplink control information
`transmission on radio resources reserved for UEs based on the uplink
`component carriers those UEs have been scheduled on”). Patent Owner also
`presents “Patent Owner’s summation of the Petition’s allegations” (Prelim.
`Resp. 13–17 & n.4) and argues the Petition never alleges or provides
`evidence to show that the prior art taught a BS specifically manipulating the
`parameter assignments for the Format 1 and Format 2 calculations in order
`to ensure that certain groups of UEs that share some common criteria will
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`end up calculating the same “m” values and thus share the same uplink radio
`resources. Prelim. Resp. 18.
`At this stage, and as discussed further below, we understand Petitioner
`to allege that Motorola in combination with TS36.211 and TS36.213 teaches
`or suggests a base station configured to send LTE Rel-8 UEs parameters that
`would result in these UEs arriving at “m” values reserved for groups of UEs
`scheduled to receive downlink transmissions on a single downlink
`component carrier. In particular, Petitioner argues that LTE Rel-8 UE
`computes an “m” value that identifies the PRBs for its PUCCH (Pet. 34–36),
`and that such “m” values would be common to LTE Rel-8 UEs and reserved
`by a LTE-Advanced BS for the LTE Rel-8 UEs. Pet. 36, 41–42 (citing
`Ex. 1003 ¶¶ 130–134, 141–146). Further, Petitioner separately states that a
`person of ordinary skill “would have understood that a [LTE-Advanced] BS
`would reserve a second set of radio resources for either a single or multiple
`LTE-A UEs.” Pet. 38–39 (citing Ex. 1007, 7; Ex. 1003 ¶¶ 131–134, 139).
`Patent Owner also argues that Petitioner fails to explain how the base
`station would actually set the values of the parameters that are inputs to the
`Format 1 and Format 2 formulas, “how those parameters are set in normal
`operation, what purpose they serve, or how the Format 1 and Format 2
`formulas are intended to affect the UE’s operation.” Prelim. Resp. 19.
`According to Patent Owner, “the Petition seems to operate on the
`assumption that the BS could set those parameter values in any arbitrary
`manner without any consequence beyond manipulating the UE’s ‘m’ value
`calculation.” Prelim. Resp. 19.
`At this stage, Petitioner has cited the testimony of Dr. Kakaes in
`support of Petitioner’s position that a person of ordinary skill would have
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`understood that a base station can set the parameters to control the “m” value
`calculation, and that the base station uses parameters to “reserve” the PRBs;
`while Patent Owner intimates that there may be a negative consequence to
`certain settings of the parameters which would not allow this use, on the
`present record, we have before us only Petitioner’s details, based on
`Petitioner’s declarant’s testimony, regarding the use of the parameters as
`described. Pet. 16–19, 35–37 (citing Ex. 1003 ¶¶ 77–85, 128–134). Further,
`to the extent Patent Owner’s arguments turn on “[t]he Petition’s discussion
`of limitation 1.2” in isolation (Prelim. Resp. 18 (referring to “[t]he Petition’s
`discussion of limitation 1.2”), 19 (same)), we note that we read the Petition
`as a whole, recognizing context provided in Petitioner’s overall discussion of
`the prior art and claim limitations.
`Patent Owner also argues the Petition merely explains how “m”
`values are calculated and that it was merely theoretically possible to
`configure a BS to allocate specific parameters to arrive at the same “m”
`values and thus use the same PRBs. Prelim. Resp. 21–23. Further, Patent
`Owner argues that any UE could calculate any possible “m” value and that
`there is no reason why a single-carrier UE would not share the same uplink
`radio resources as a multi-carrier UE. Prelim. Resp. 22.
`We note those arguments currently amount to unsupported attorney
`argument and do not rebut effectively Petitioner’s showing on this record.
`See In re Pearson, 494 F.2d 1399, 1405 (CCPA 1974) (“Attorney’s
`argument in a brief cannot take the place of evidence.”). At this stage, we
`determine Petitioner has made a sufficient showing for this limitation for the
`purposes of institution.
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`[1.3] receiving, on a second set of radio resources, control
`information associated with the downlink transmissions to the
`second user terminal, wherein the second set of radio resources
`is reserved for a user terminal scheduled to receive downlink
`transmissions on multiple downlink component carriers or on a
`downlink component carrier associated with a non-primary
`cell, the first and second sets of radio resources being on a
`same uplink component carrier associated with the primary
`cell.
`Petitioner argues the combined teachings of the proffered references
`renders this limitation obvious. Petitioner states that a person of ordinary
`skill “would have understood that a BS would reserve a second set of radio
`resources for either a single or multiple LTE-A UEs.” Pet. 39 (citing
`Ex. 1003 ¶¶ 131–134, 139). According to Petitioner, “[a] BS would reserve
`the second set of radio resources by sending the UEs parameters that would
`result in the UEs arriving at the same ‘m’ values when compared to using an
`appropriate LTE-Advanced PUCCH format.” Pet. 39 (citing Ex. 1003
`¶¶ 131–134, 139). Further, Petitioner states that “[t]he BS has full control of
`those format parameters (regardless of formats, such as PUCCH Format 1
`and Format 2 specified in TS36.211, or other newly defined Formats) and
`thus ensures that only certain LTE-Advanced UEs share the same PRBs by
`sending only to those UEs parameters that result in the same ‘m.’” Pet. 39
`(citing Ex. 1003 ¶¶ 139–140).
`Patent Owner first argues Motorola does not show or explain any
`uplink radio resources reserved specifically for UEs operating in carrier
`aggregation mode as opposed to those operating in single carrier mode.
`Prelim. Resp. 23–24. Further, Patent Owner argues there is no reason that a
`single-carrier UE would not share the same uplink resources shown in
`Motorola’s Figure 4 with multiple UEs and Motorola’s Figure 4 does not
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`show or state that different sets of radio resources are reserved for multi-
`carrier and single-carrier user terminals. Prelim. Resp. 24 (citing Ex. 1005,
`131).
`On this record, Patent Owner’s argument that there is no reason
`single-carrier UEs would not share the same uplink resources with multi-
`carrier UEs amounts to attorney argument. Contrary to Patent Owner’s
`argument, citing Dr. Kakaes’s Declaration, Petitioner argues a person of
`ordinary skill “would have understood that a BS would reserve a second set
`of radio resources for either a single or multiple LTE-A UEs.” Pet. 39
`(citing Ex. 1003 ¶¶ 131–134, 139). And as discussed further below,
`Petitioner and Dr. Kakaes advance reasons that a person of ordinary skill
`would have reserved separate pools of “m” values and corresponding PRBs
`for single-carrier UEs and multi-carrier UEs. See Pet. 41–44.
`Patent Owner also argues Petitioner fails to show any motivation for a
`person of ordinary skill to configure a BS such that user equipment arrives at
`the same “m” values reserved for LTE-A UEs. Prelim. Resp. 23–25.
`Further, Patent Owner contends Petitioner’s stated reasons for combining the
`references are generic and merely state what a person of ordinary skill could
`have done, not what a person of ordinary skill would have been motivated to
`do. Prelim. Resp. 26–28. Patent Owner contends Petitioner’s arguments
`relating to new PUCCH formats that do not exist but purportedly would
`have been created by a person of ordinary skill lack adequate motivation for
`such a “highly complex and contorted obviousness modification.” Prelim.
`Resp. 29–35.
`At this stage, we determine Petitioner’s contentions and reasons for
`modifying the references’ combined teachings are adequately supported for
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`the purposes of institution. Among other things, Petitioner contends the
`PUCCH structure of LTE Rel-8 is “flexible and extensible” and that
`“PUCCH Format 1 and Format 2 are completely component carrier-
`agnostic” such that “LTE Rel-8 UEs use PUCCH Format 1 or Format 2 to
`determine the PUCCH ‘m’ value when operating in any LTE Rel-8
`compatible component carrier.” Pet. 19. With supporting testimony from
`Dr. Kakaes, Petitioner contends a person of ordinary skill “would have
`understood that a BS would reserve a second set of radio resources for either
`a single or multiple LTE-A UEs” and that a base station has full control of
`the format parameters UEs use to arrive at “m” values. Pet. 39 (citing
`Ex. 1003 ¶¶ 139–140). Similarly, Petitioner argues “to facilitate network
`management, a BS would want to reserve a pool of ‘m’ values (and thus
`corresponding PRBs) for use by UEs operating in non-carrier aggregation
`mode (single DL carrier) and reserve another pool of ‘m’ values for use by
`UEs operating in LTE-Advanced carrier-aggregation mode (multiple DL
`component carriers).” Pet. 41 (citing Ex. 1003 ¶¶ 141–146). Petitioner also
`contends that reserving pools of “m” values would avoid “disruption risks
`using existing tools and techniques” and “facilitates the introduction of new
`tools and techniques into the network to better service more advance UEs
`that operate in the new LTE-Advanced carrier aggregation mode.” Pet. 41–
`42. Petitioner also presents argument and textbook evidence of what
`Petitioner contends are similar configurations to the parameters for
`calculating “m” in PUCCH Format 1 and Format 2. Pet. 42–44 (citing
`Ex. 1003 ¶¶ 89–95, 109–111, 146; Ex. 1015,6 97–98, Fig. 5.19).
`
`
`6 Harri Holma et al., LTE for UMTS – OFDMA and SC-FDMA Based Radio
`Access, John Wiley & Sons (2009).
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`At this stage, we determine Petitioner has made a sufficient showing
`for this limitation for the purposes of institution.
`
`Conclusion
`2.
`For the reasons explained above, we determine Petitioner has shown a
`reasonable likelihood that it would prevail in its challenge to the
`patentability of claim 1. The Petition also includes a clam-by-claim,
`limitation-by-limitation comparison of claims 2–11, 15–27, and 33–41 to the
`combined teachings of Motorola, TS36.211, and TS36.213, and in the
`alternative, to the combined teachings of Motorola, TS36.211, TS36.213,
`and TR36.912. Pet. 44–80. Patent Owner does not address Petitioner’s
`showings of those claims beyond the arguments advanced for claim 1,
`addressed above.
`E. Conclusion
`On the current record, we determine Petitioner has shown a
`reasonable likelihood that it will prevail in its challenge to at least one claim
`of the ’044 patent. Accordingly, we institute an inter partes review of
`the ’044 patent.
`
`ORDER
`
`In consideration of the foregoing, it is hereby:
`
`ORDERED that pursuant to 35 U.S.C. § 314(a), an inter partes
`
`review is instituted as to claims 1–11, 15–27, and 33–41 of the ’044 patent
`on all grounds asserted in the Petition; and
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`FURTHER ORDERED that, pursuant to 35 U.S.C. § 314(c) and
`37 C.F.R. § 42.4, notice is given of the institution of a trial, which
`commences on the entry date of this Decision.
`
`
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`For PETITIONER:
`Adam Seitz
`Paul Hart
`Jennifer Bailey
`ERISE IP, P.A.
`Adam.Seitz@eriseip.com
`Paul.Hart@eriseip.com
`Jennifer.Bailey@eriseip.com
`
`For PATENT OWNER:
`Peter Knops
`Jason Wejnert
`NOROOZI PC
`peter@noroozipc.com
`jason@noroozipc.com
`
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