Trials@uspto.gov
`571-272-7822
`
`Paper 12
`Date: March 13, 2023
`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`META PLATFORMS, INC.,
`Petitioner,
`v.
`THALES VISIONIX, INC.,
`Patent Owner.
`
`IPR2022-01305
`Patent 6,922,632 B2
`
`
`
`
`
`
`
`
`
`Before WILLIAM V. SAINDON, HYUN J. JUNG, and
`JASON W. MELVIN, Administrative Patent Judges.
`JUNG, Administrative Patent Judge.
`
`DECISION
`Granting Institution of Inter Partes Review
`35 U.S.C. § 314
`
`
`
`
`
`
`
`
`571-272-7822
`
`Paper 12
`Date: March 13, 2023
`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`META PLATFORMS, INC.,
`Petitioner,
`v.
`THALES VISIONIX, INC.,
`Patent Owner.
`
`IPR2022-01305
`Patent 6,922,632 B2
`
`
`
`
`
`
`
`
`
`Before WILLIAM V. SAINDON, HYUN J. JUNG, and
`JASON W. MELVIN, Administrative Patent Judges.
`JUNG, Administrative Patent Judge.
`
`DECISION
`Granting Institution of Inter Partes Review
`35 U.S.C. § 314
`
`
`
`
`
`
`
`
`
`IPR2022-01305
`Patent 6,922,632 B2
`
`INTRODUCTION
`I.
`A. Background and Summary
`Meta Platforms, Inc. (“Petitioner”) filed a Petition (Paper 2, “Pet.”)
`requesting institution of an inter partes review of claims 30–36, 44, 45, 47–
`55, and 57–61 of U.S. Patent No. 6,922,632 B2 (Ex. 1001, “the ’632
`patent”). Thales Visionix, Inc. (“Patent Owner”) filed a Preliminary
`Response. Paper 9 (“Prelim. Resp.”). With our authorization, the parties
`filed additional briefs directed solely to the issue of our discretion under 35
`U.S.C. § 314(a). Papers 10, 11.
`Under 35 U.S.C. § 314, an inter partes review may not be instituted
`“unless . . . there is a reasonable likelihood that the petitioner would prevail
`with respect to at least 1 of the claims challenged in the petition.” Upon
`consideration of the Petition and for the reasons explained below, we
`determine that Petitioner has shown a reasonable likelihood of prevailing
`with respect to at least one of the challenged claims.
`Thus, we institute an inter partes review of claims 30–36, 44, 45, 47–
`55, and 57–61 of the ’632 patent on all presented challenges. SAS Inst. Inc.
`v. Iancu, 138 S. Ct. 1348, 1359–60 (2018).
`B. Real Parties in Interest
`Petitioner identifies Meta Platforms, Inc. and Meta Platforms
`Technologies, LLC as real parties in interest. Pet. 1. Patent Owner
`identifies Thales Visionix, Inc. and Gentex Corporation as real parties in
`interest. Paper 4, 1.
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`2
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`Patent 6,922,632 B2
`C. Related Matters
`The parties identify Gentex Corp. v. Meta Platforms, Inc., 4:22-cv-
`03892 (N.D. Cal.) as a related matter. 1 Pet. 1–2; Paper 4, 1. Petitioner notes
`that the related litigation was transferred from the Western District of Texas.
`Pet. 1–2. Patent Owner additionally identifies as related matters IPR2022-
`01304 that also challenges the ’632 patent and IPR2022-01308. Paper 4, 1–
`2.
`
`D. The ’632 Patent (Ex. 1001)
`The ’632 patent issued on July 26, 2005 from an application filed on
`August 11, 2003 and claims priority to a provisional application filed on
`August 9, 2002. Ex. 1001, codes (22), (45), (60). The ’632 patent “relates
`to tracking, navigation, pose estimation, localization, auto-calibration, scene
`modeling, structure-from-motion and/or map-building based on sensor
`inputs.” Id. at 1:12–15. Reproduced below is Figure 1 of the ’632 patent.
`
`
`1 The case was originally filed in the U.S. District Court for the Western
`District of Texas (No. 6:21-cv-00755-ADA) and was subsequently
`transferred to the U.S. District Court for the Northern District of California.
`Pet. 2. The parties incorrectly identify the case number in the Northern
`District of California as “5:22-cv-03892.” Compare Pet. 2; Paper 4 (Patent
`Owner’s Mandatory Notices), 1, with Ex. 2002 (Joint Order Regarding
`Claim Construction and Discovery).
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`Figure 1 “shows a vehicle navigating an environment.” Ex. 1001,
`11:48. Navigation system 90 (shown in Figure 2 reproduced below) tracks
`vehicle 100 in environment 106, in particular “the position and the
`orientation (together referred to as the 6-dimensional ‘pose’) of vehicle 100
`based on both inertial measurements as well as sensor measurements
`between sensing devices or targets in the vehicle 100 and sensing devices or
`targets that are fixed in the environment 106.” Id. at 12:3–4, 12:11–16.
`Sensors and targets fixed to vehicle 100 or environment 106 are
`collectively referred to as pose sensing elements (“PSE”). Ex. 1001, 13:6–8.
`The ’632 patent states that “[f]or an ‘inside-out’ measurement, the sensor is
`attached to the vehicle and the target is fixed in the environment,” and “[f]or
`an ‘outside-in’ measurement, a sensor fixed in the environment observes a
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`target fixed to the moving vehicle.” Id. at 14:47–51. Reproduced below is
`Figure 2 of the ’632 patent.
`
`
`
`Figure 2 is a block diagram of a navigation system. Ex. 1001, 11:49.
`Navigation system 90 includes sensors 103 and data processing unit 190. Id.
`at 12:5–7. Sensors 103 include PSE devices 105 and inertial measurement
`unit (“IMU”) 104. Id. at 12:45–48.
`According to the ’632 patent, “a wide variety of sensors and targets
`may be used” because “[n]avigation system 90 is modularized and
`configurable such that different sensors and targets can be selected for a
`particular vehicle without necessarily having to re-implement and re-test the
`implementation of the navigation system.” Ex. 1001, 13:32–37. The ’632
`patent “provides a ‘plug and track’ capability in which sensors and targets
`and their associated software drivers can be ‘plugged’ into the navigation
`system 90.” Id. at 13:37–40.
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`Patent 6,922,632 B2
`“[S]ensor specific computations are isolated in PSE drivers 120” that
`“are software modules,” and “meta-driver 122 provides an interface between
`the PSE drivers 120 and a sensor fusion core 200, which does not need to
`include sensor-specific aspects.” Ex. 1001, 16:40–44, 16:46. “By dividing
`data processing unit 190 into portions specific to PSE devices 105 and a
`portion specific to updating the states of the navigation system 90, the
`navigation system can be easily reconfigured.” Id. at 17:29–32. Sensor
`fusion core 200 “processes information from sensors 103” that updates
`estimates of vehicle location and orientation. Id. at 16:57–58. Sensor fusion
`core 200 includes state update module 214 that has measurement
`management unit (“MMU”) 304. Id. at 16:59, 17:40–44, 18:24–25, Figs. 2,
`3.
`
`“When system 90 powers up, it starts in initialization mode, which
`includes the enumeration and self-configuration procedures.” Ex. 1001,
`22:54–56. MMU 304 requests meta driver 122 to “enumerate the sensing
`hardware,” and meta driver 122 then loads available PSE drivers and
`requests each PSE driver 120 enumerate PSE devices 105 available to
`navigation system 90. Id. at 18:39–43, 18:48–49; see also id. at 22:15–36
`(describing the enumeration process). Meta driver 122 also “receives the
`configuration information from PSE drivers 120.” Id. at 18:59–60. “By
`using meta-driver 122 to enumerate the PSEs available upon power-up of
`navigation system 90, the navigation system is able to automatically
`reconfigure itself.” Id. at 19:1–3.
`“Once a valid system configuration has been achieved and stored in
`the requisite configuration files,” “the system moves into acquisition mode
`. . . to find out the approximate location or pose of the vehicle.” Ex. 1001,
`22:57–61. “This initial pose estimate allows the system 90 to enter the
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`tracking update loop, which involves a recursive estimation filter that uses
`an approximate initial guess of states.” Id. at 22:62–64. A “difference
`between expected measurement based on the estimated pose . . . and the
`actual sensor measurement . . . is referred to as the ‘innovation’ in the
`measurement.” Id. at 15:48–51.
`“In tracking mode, MMU 304 communicates with meta-driver 12[2]
`to determine which PSE pairs (including target and sensor) are available to
`make measurements during the next measurement cycle,” and “selects a pair
`of PSEs from among the pairs of PSEs that are available to make
`measurements.” Ex. 1001, 19:29–34. The selection is “based on an
`‘information gain’ that represents the utility (or usefulness) of a
`measurement by the pair of PSEs to navigation system 90.” Id. at 19:34–37.
`E. Illustrative Claim
`The ’632 patent includes 69 claims, of which Petitioner challenges
`claims 30–36, 44, 45, 47–55, and 57–61. Of the challenged claims,
`claims 30, 33, 44, and 47 are independent, and reproduced below is
`claim 30.
`
`30. A sensor module comprising:
`a sensor interface for communicating with a measurement
`sensor;
`a communication interface for communication with an
`estimation system;
`wherein the sensor module is configured to
`receive information related to an expected sensor
`measurement over the communication interface,
`receive a measurement signal over the sensor interface,
`provide measurement
`information based on
`the
`measurement signal over the communication interface.
`Ex. 1001, 48:7–17.
`
`7
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`Patent 6,922,632 B2
`F. Asserted Prior Art and Proffered Testimonial Evidence
`Petitioner identifies the following references as prior art in the
`asserted grounds of unpatentability:
`Name
`Reference
`Harris
`US 5,307,289, issued Apr. 26, 1994
`Horton
`US 5,615,132, issued Mar. 25, 1997
`Welch
`Gregory F. Welch, SCAAT: Incremental Tracking
`Thesis
`with Incomplete Information (Oct. 1996).
`Welch
`Greg Welch & Gary Bishop, SCAAT: Incremental
`1997
`Tracking with Incomplete Information (1997).
`Welch
`Greg Welch et al., High-Performance Wide-Area
`2001
`Optical Tracking, PRESENCE TELEOPERATORS AND
`VIRTUAL ENVIRONMENTS, Feb. 2001 at 1.
`Petitioner contends that the above-listed references are prior art under
`§§ 102(a) and (b). 2 Pet. 4–5. Petitioner also provides a Declaration of Dr.
`Ulrich Neumann. Ex. 1005. 3
`
`Exhibit
`1011
`1010
`1009
`
`1008
`
`1007
`
`
`2 The relevant sections of the Leahy-Smith America Invents Act (“AIA”),
`Pub. L. No. 112–29, 125 Stat. 284 (Sept. 16, 2011), took effect on March 16,
`2013. Because the ’632 patent issued from an application filed before that
`date, our citations to 35 U.S.C. §§ 102 and 103 in this Decision are to their
`pre-AIA versions. See also Pet. 4 n.1 (“Based on the claimed priority date
`of the ’632 Patent, Pre-AIA versions of § 102(a) and § 103 apply.”).
`3 Petitioner also includes several declarations directed toward the public
`availability of several references. See, e.g., Exs. 1018–1021, 1027–1029.
`
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`G. Asserted Grounds
`Petitioner asserts that claims 30–36, 44, 45, 47–55, and 57–61 are
`unpatentable on the following grounds:
`35
`U.S.C.
`§
`103(a) Welch 2001, Welch 1997
`103(a) Welch 2001, Welch 1997, Welch Thesis
`103(a) Welch 2001, Harris
`103(a) Horton
`103(a) Horton, Welch 1997
`103(a) Horton, Harris
`
`Reference(s)/Basis
`
`Claim(s) Challenged
`
`30–36, 44, 45, 47–49,
`51–53, 59–61
`50
`54, 55, 57, 58
`30–33, 47, 50–53,
`59–61
`34-36
`54, 55, 57, 58
`Pet. 5.
`
`
`II. 35 U.S.C. § 314(a)
`As noted above in Section I.C., the parties identify a related matter in
`the U.S. district court for the District of Northern California. Pet. 1–2;
`Paper 4, 1.
`Petitioner argues that most of the factors of Apple Inc. v. Fintiv, Inc.,
`IPR2020-00019, Paper 11 (PTAB Mar. 20, 2020) (precedential) (“Fintiv”)
`weigh against exercising our discretion under § 314(a) to deny the Petition.
`Pet. 7–9. According to Petitioner, only factors 1 and 4 are neutral. Id. at 8,
`9. Patent Owner responds that trial in the related litigation will take place in
`late January 2024 before a Final Written Decision is expected in this
`proceeding. Prelim. Resp. 63–64. Patent Owner also argues that factors 4–6
`weigh in favor of discretionary denial. Id. at 64–65. With our authorization,
`the parties filed reply arguments that elaborate on the arguments
`summarized above. Papers 10, 11.
`
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`Fintiv instructs us to consider whether to deny institution in certain
`circumstances when there is parallel district court litigation, upon
`consideration of six factors:
`1. whether the court granted a stay or evidence exists that
`one may be granted if a proceeding is instituted;
`2. proximity of the court’s trial date to the Board’s
`projected statutory deadline for a final written decision;
`3. investment in the parallel proceeding by the court and
`the parties;
`4. overlap between issues raised in the petition and in the
`parallel proceeding;
`5. whether the petitioner and the defendant in the parallel
`proceeding are the same party; and
`6. other circumstances that impact the Board’s exercise of
`discretion, including the merits.
`Fintiv, Paper 11 at 6.
`Our analysis of Fintiv is guided by the USPTO Director’s
`Memorandum issued on June 21, 2022, titled “Interim Procedure for
`Discretionary Denials in AIA Post Grant Proceedings with Parallel District
`Court Litigation” (“Director’s Memo”). We turn to the Fintiv factors.
`1. Factor 1: Stay
`Neither party has moved for a stay of the district court
`proceeding. Pet. 8; Paper 9, 2; Paper 10, 5. This factor is, thus, neutral.
`2. Factor 2: Proximity to Trial Date
`The parallel litigation began in the U.S. District Court for the Western
`District of Texas, but was transferred to the U.S. District Court for the
`Northern District of California. Pet. 8; Prelim. Resp. 63. No trial date has
`been set. Pet. 8. Patent Owner argues that we should deny institution based
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`on the expected trial date using the median time to trial from when the case
`was filed in the Western District of Texas. See, e.g., Prelim. Resp. 64;
`Paper 11, 2.
`Fintiv factor 2 discusses consideration of a trial date. The Director’s
`Memo states that it may be useful to compare a trial date with evidence of a
`median time to trial. Director’s Memo 8. The purpose of doing so is in
`order to ascertain the likelihood of the scheduled trial date actually occurring
`on or around that date. Id. at 8 (“Stakeholders correctly noted that scheduled
`trial dates are unreliable and often change[,]” and a “scheduled trial date . . .
`is not by itself a good indicator of [when] the district court trial will
`occur.”). The Director’s Memo does not state that median time-to-trial
`statistics are themselves a trial date, or otherwise replace consideration of a
`trial date under Fintiv factor 2. And, in the circumstances here, where the
`case was transferred from the Western District of Texas, the usefulness of
`the median time to trial statistics is less clear. Ultimately, though, we will
`not speculate on when a trial may be scheduled. Accordingly, factor 2
`favors not exercising our discretion to deny institution.
`3. Factor 3: Investment in Parallel Proceeding
`Patent Owner argues that “[t]he parties have fully briefed claim
`construction and exchanged infringement and invalidity contentions, and are
`almost eight months into general fact discovery.” Prelim. Resp. 64.
`Petitioner argues that “the most burdensome parts of the case still remain,”
`for example fact discovery does not close for several months, and expert
`discovery has yet to begin. Paper 10, 3. Petitioner also notes that there have
`not been any claim construction rulings. Id. Patent Owner responds that
`“Petitioner has proposed that all document production be substantially
`complete by March 16, 2023.” Paper 11, 4 (citing Ex. 2003, 1).
`
`11
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`We determine that factor 3 does not favor discretionary
`denial. Although there has been work completed, as Petitioner points out,
`“the most burdensome parts of the case still remain.” Paper 10, 3; see also
`Ex. 1031 (Case Management and Pretrial Order).
`4. Factor 4: Overlap with Parallel Proceeding
`Petitioner offers to file a Sand Revolution type of stipulation,
`indicating that it will not pursue the grounds raised in this proceeding in the
`parallel litigation if we institute trial. Paper 10, 3–4; Sand Revolution II,
`LLC v. Cont’l Intermodal Grp. Trucking LLC, No. IPR2019-01393,
`Paper 24 at 11–12 (PTAB June 16, 2020) (informative) (finding that a
`stipulation not to pursue the same grounds in the parallel litigation
`“mitigates to some degree the concerns of duplicative efforts”). Patent
`Owner argues that such a narrow stipulation does not mitigate the concerns
`of overlap. Paper 11, 4–5.
`We are not aware of any precedent that Sand Revolution type
`stipulations are no longer valid or not entitled to weight in the Fintiv
`analysis. We recognize that Sand Revolution stipulations are narrower in
`scope than Sotera type stipulations, and perhaps may require a different
`result in a case with different facts. See Sotera Wireless, Inc. v. Masimo
`Corp., IPR2020-01019, Paper 12 at 18–19 (PTAB Dec. 1, 2020)
`(precedential as to § II.A) (finding that a broad stipulation not to pursue any
`ground raised or that could have been reasonably raised in the parallel
`litigation weighs strongly toward institution). Here, Petitioner’s stipulation
`still eliminates specific overlap with the parallel proceeding. As in Sand
`Revolution, we weigh this factor as marginally favoring not exercising our
`discretion to deny institution. Sand Revolution, Paper 24 at 12.
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`5. Factor 5: Whether Petitioner and Defendant are the Same Party
`“If a petitioner is unrelated to a defendant in an earlier court
`proceeding, the Board has weighed this fact against exercising discretion to
`deny institution . . . .” Fintiv, Paper 11 at 13. Petitioner is also a defendant
`in the related district court litigation. See Pet. 2; Prelim. Resp. 64. Thus,
`this factor weighs marginally in favor of exercising our discretion to deny
`institution. Sotera, Paper 12 at 19.
`6. Factor 6: Merits and Other Considerations
`Patent Owner argues that Petitioner does not make out a compelling
`case on the merits. Prelim. Resp. 49. As specified in the Director’s Memo,
`“compelling, meritorious challenges will be allowed to proceed at the PTAB
`even where district court litigation is proceeding in parallel.” Director’s
`Memo 4. Accordingly, the Director’s Memo states that the Fintiv analysis
`will not lead to discretionary denial if it can be established that a case
`presents compelling merits. Id. at 4–5. But, the Director’s Memo does not
`require a Petitioner to establish compelling merits to avoid discretionary
`denial.
`Additionally, the Director recently clarified the Interim Procedure,
`stating that “[t]he Board should first assess Fintiv factors 1–5; if that
`analysis supports discretionary denial, the Board should engage the
`compelling merits question.” CommScope Techs. LLC v. Dali Wireless,
`Inc., IPR2022-01242, Paper 23 at 6 (PTAB Feb. 27, 2023) (precedential).
`Here, we determine that, on balance, Fintiv factors 1–5 do not favor
`exercising our discretion to deny institution and, therefore, there is no need
`to determine whether the Petition establishes compelling merits.
`
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`7. Conclusion on Fintiv Factors
`Based on a holistic analysis of the Fintiv factors taking into
`consideration “whether efficiency and integrity of the system are best served
`by denying or instituting review” (Fintiv, Paper 11 at 6), we decline to
`exercise our discretion under 35 U.S.C. § 314(a) to deny institution of inter
`partes review.
`
`
`III. ANALYSIS
`
`A. Legal Standards
`“In an [inter partes review], the petitioner has the burden from the
`onset to show with particularity why the patent [claim] it challenges is
`unpatentable.” Harmonic Inc. v. Avid Tech., Inc., 815 F.3d 1356, 1363 (Fed.
`Cir. 2016). This burden of persuasion never shifts to Patent Owner.
`Dynamic Drinkware, LLC v. Nat’l Graphics, Inc., 800 F.3d 1375, 1378
`(Fed. Cir. 2015). The Board may authorize an inter partes review if we
`determine that the information presented in the Petition shows that there is a
`reasonable likelihood that Petitioner will prevail with respect to at least one
`of the claims challenged in the petition. 35 U.S.C. § 314(a).
`Petitioner contends that the challenged claims of the ’632 patent are
`unpatentable under § 103. Pet. 3. A claim is unpatentable under § 103 if the
`differences between the claimed subject matter 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). The question of obviousness is resolved on the basis of underlying
`factual determinations, including: (1) the scope and content of the prior art;
`(2) any differences between the claimed subject matter and the prior art;
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`(3) the level of skill in the art; and (4) where in evidence, so-called
`secondary considerations. Graham v. John Deere Co., 383 U.S. 1, 17–18
`(1966). When evaluating a combination of teachings, we must also
`“determine whether there was an apparent reason to combine the known
`elements in the fashion claimed by the patent at issue.” KSR, 550 U.S. at
`418 (citing In re Kahn, 441 F.3d 977, 988 (Fed. Cir. 2006)). Whether a
`combination of elements produces a predictable result weighs in the ultimate
`determination of obviousness. Id. at 416–417.
`B. Level of Ordinary Skill in the Art
`Petitioner argues that one of ordinary skill in the art “would have had
`a Bachelor’s degree in Computer Science, or an equivalent field, and three to
`five years of experience working with computer implemented tracking
`systems.” Pet. 13 (citing Ex. 1005 ¶ 37). Petitioner also argues that
`“[a]dditional education might compensate for less experience, and vice-
`versa.” Id. (citing Ex. 1005 ¶ 37).
`“For purposes of this preliminary response only, Patent Owner accepts
`the Petition’s proposed definition of a person of ordinary skill in the art.”
`Prelim. Resp. 10 (citing Pet. 13). “However, for any other purpose, Patent
`Owner disagrees with Petitioner that such [a person of ordinary skill in the
`art] should be limited to a maximum of five years’ experience and reserves
`the right to offer an alternative definition based on expert evidence.” Id. at
`10–11.
`Based on the preliminary record, we adopt Petitioner’s asserted level
`of ordinary skill only to determine whether there is a reasonable likelihood
`that Petitioner would prevail with respect to at least one of the claims
`challenged in the Petition.
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`C. Claim Construction
`In an inter partes review, the claims are construed
`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); see Phillips v. AWH Corp., 415 F.3d 1303,
`1312–13 (Fed. Cir. 2005) (en banc).
`Petitioner argues that “no terms need construction because the claims
`read on the prior art under any construction consistent with Phillips.”
`Pet. 13–14. Patent Owner does not propose expressly any interpretation for
`any claim term. See generally Prelim. Resp.
`At this preliminary stage, because determining whether Petitioner
`shows a reasonable likelihood of prevailing does not depend on a particular
`interpretation for any claim term, we determine that no claim term requires
`express interpretation. Realtime Data, LLC 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. Asserted Obviousness Based on Welch 2001 and Welch 1997
`1. Welch 2001 (Ex. 1007)
`Welch 2001 is an article titled “High-Performance Wide-Area Optical
`Tracking” and presents “a complete description of our most recent electro-
`
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`optical system, the HiBall Tracking System.” Ex. 1007, 1. Reproduced
`below is Figure 6 of Welch 2001.
`
`
`
`Figure 6 shows that the “HiBall Tracking System consists of three
`main components.” Ex. 1007, 5. “An outward-looking sensing unit” called
`the HiBall “is fixed to each user to be tracked” and “observes a subsystem of
`fixed-location infrared LEDs” called the Ceiling. Id.; see also id. at 4
`(explaining that the system uses “an inside-looking-out configuration, in
`which the optical sensors are on the (moving) user and the landmarks (for
`instance, the LEDs) are fixed in the laboratory,” and a “corresponding
`outside-looking-in alternative would be to place the landmarks on the user
`and to fix the optical sensors in the laboratory”), Fig. 4 (showing the HiBall
`unit and the unit on a person), Fig. 5 (depicting the outside-looking-in and
`inside-looking-out configurations).
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`“Communication and synchronization between the host computer and
`these subsystems is coordinated by the Ceiling-HiBall Interface Board
`(CIB).” Ex. 1007, 5–6. “Each HiBall observes LEDs through multiple
`sensor-lens views that are distributed over a large solid angle.” Id. at 6.
`“LEDs are sequentially flashed (one at a time) such that they are seen via a
`diverse set of views for each HiBall,” and “[i]nitial acquisition is performed
`using a brute-force search through LED space, but, once initial lock is made,
`the selection of LEDs to flash is tailored to the views of the active HiBall
`units.” Id. “Pose estimates are maintained using a Kalman-filter-based
`prediction-correction approach known as single-constraint-at-a-time
`(SCAAT) tracking” that “has been extended to provide self-calibration of the
`ceiling, concurrent with HiBall tracking.” Id.
`2. Welch 1997 (Ex. 1008)
`Welch 1997 is a paper titled “SCAAT: Incremental Tracking with
`Incomplete Information.” Ex. 1008, 1. It “present[s] a promising new
`mathematical method for tracking a user's pose (position and orientation)”
`that is referred to as “single-constraint-at-a-time or SCAAT tracking.” Id. at
`Abstr.
`3. Independent Claim 30
`Petitioner argues that Welch 2001 teaches “[a] sensor module”
`because it describes the CIB paired with HiBall sensors. Pet. 17–18 (citing
`Ex. 1005 ¶¶ 232–233; Ex. 1007, 9, Fig. 6). Petitioner also argues that Welch
`2001 teaches “a sensor interface for communicating with a measurement
`sensor” because the CIB “has two tether interfaces that can communicate
`with up to four daisy-chained HiBall units” and the “HiBall units are
`measurement sensors.” Id. at 18 (citing Ex. 1005 ¶¶ 234–235; Ex. 1007, 9,
`10).
`
`18
`
`
`
`IPR2022-01305
`Patent 6,922,632 B2
`For “a communication interface for communication with an estimation
`system,” Petitioner argues that Welch 2001 teaches that the CIB has an
`“IEEE1284C extended parallel port” for communicating with a PC, the
`asserted estimation system. Pet. 19 (citing Ex. 1005 ¶¶ 239–237; Ex. 1007,
`9). Petitioner also argues that the ’632 patent’s description of an estimation
`subsystem supports its position. Id. (citing Ex. 1001, 2:35–46, 4:11–20;
`Ex. 1007, 6; Ex. 1008 § 3.1.2).
`Regarding “wherein the sensor module is configured to receive
`information related to an expected sensor measurement over the
`communication interface,” Petitioner contends that Welch 2001 teaches that
`at each estimation cycle, a particular sensor and LED are selected, and the
`CIB causes the selected LED to flash to make a single measurement. Pet. 19
`(citing Ex. 1005 ¶¶ 238–239; Ex. 1007, 9, 10, 13). Petitioner also contends
`that the measurement is compared to a predicted measurement, and that one
`of ordinary skill in the art would have understood that the predicted
`measurement would be the recited “expected sensor measurement.” Id. at
`19–20 (citing Ex. 1005 ¶ 238; Ex. 1007, 12–13). According to Petitioner,
`the calculation for the “expected sensor measurement” “is performed by the
`computer within the system, and then is provided to the sensor subsystem
`when it is compared against the actual measurement from the LED and
`HiBall sensor.” Id. at 20 (citing Ex. 1005 ¶ 238).
`For the sensor module being configured to “receive a measurement
`signal over the sensor interface,” Petitioner contends that Welch 2001
`teaches that a HiBall sensor takes a measurement when a selected LED
`flashes, and that one of ordinary skill in the art “would have understood that
`the CIB would necessarily have to receive the measurement signal from the
`HiBall.” Pet. 20 (citing Ex. 1005 ¶¶ 240–241; Ex. 1007, 10, 12–13). For the
`
`19
`
`
`
`IPR2022-01305
`Patent 6,922,632 B2
`sensor module being configured to “provide measurement information based
`on the measurement signal over the communication interface,” Petitioner
`contends that one of ordinary skill in the art “would have understood that the
`CIB would necessarily have to provide measurement information based on
`the measurement signal from the HiBall to the PC over the communication
`interface.” Pet. 20–21 (citing Ex. 1005 ¶¶ 242–243; Ex. 1007, 10, 12–13).
`On the present record, it is not clear how Welch 2001 teaches that the
`asserted sensor module (the CIB paired with HiBall sensors) is configured to
`receive information related to the asserted expected sensor measurement (the
`predicted measurement), as required by the wherein clause of claim 30.
`Pet. 19–20 (citing Ex. 1005 ¶¶ 238–239; Ex. 1007, 9, 10, 12–13). The cited
`portions of Welch 2001 describe how a measurement is taken and how the
`measurement “is used to update the filter state and covariance matrices using
`the Kalman gain matrix.” Ex. 1007, 9, 10, 12–13. The cited portions also
`state that “[t]he Ceiling-HiBall Interface Board (CIB) (figure 11) provides
`communication and synchronization between a host personal computer, the
`HiBall (section 4.1), and the ceiling (section 4.2)” and that “[o]nce a
`particular view and LED have been chosen in this fashion, the CIB (section
`4.3) is instructed to flash the LED and take a measurement as described in
`section 5.2.” Id. at 9, 13.
`None of the cited portions appear to expressly teach that the CIB and
`HiBalls receive information related to the predicted measurement. See
`Ex. 1007, 9, 10, 12–13. Also, Petitioner’s arguments substantially repeat the
`cited testimonial evidence. Compare Pet. 19–20, with Ex. 1005 ¶¶ 238–239.
`Furthermore, Petitioner’s asserted motivation to combine argues that
`one of ordinary skill in the art “would have understood that the SCAAT
`calculations performed by the PC use the online configuration measurements
`
`20
`
`
`
`IPR2022-01305
`Patent 6,922,632 B2
`as inputs to estimate the HiBall’s pose, and that using these measurements as
`inputs constitutes ‘configuring the estimate system,’” and that “the SCAAT
`tracking approach described in Welch 2001 and Welch 1997 updates the
`sensor state estimate according to the accepted measurement and
`configuration data from the sensor subsystem.” Pet. 16–17 (citing Ex. 1005
`¶¶ 56, 57). These asserted understandings for the motivation to combine do
`not seem to relate to the wherein clause of independent claim 30. See id.
`Turning to the other asserted reference, Petitioner cites § 3.1.2 of
`Welch 1997 for the recited “communication interface.” Pet. 19. The cited
`section of Welch 1997 describes that, when a measurement becomes
`available, the SCAAT algorithm cycles through steps that include predicting
`the measurement and computing the residual between the actual and
`predicted measurements. Ex. 1008 § 3.1.2. The section concludes with a
`statement in parenthetical that the “SCAAT filter computations” were
`executed “on a 200 MHz PC-compatible computer.” Id.; see also id. at § 4.4
`(stating that the “SCAAT algorithm [was demonstrated] with the HiBall
`tracker, a head-mounted display, and a real application” and that “[t]he
`SCAAT code runs on a 200 MHz PC-compatible computer with a custom
`interface board”). Welch 1997 indicates that information related to the
`predicted measurement is not provided to the asserted sensor module, the
`CIB paired with HiBall sensors.
`To the extent that Petitioner is arguing that there is a connection
`between the predicted measurement and the instruction sent from the PC to
`the CIB to flash a particular LED, the relied-upon portion of Welch 2001
`does not appear to support such an argument. Petitioner cites to a portion of
`Wel
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