`Tel: 571-272-7822
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`Paper 10
`Entered: May 13, 2016
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`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`_______________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`_______________
`
`THE TORO COMPANY,
`Petitioner,
`
`v.
`
`MTD PRODUCTS INC.,
`Patent Owner.
`_______________
`
`Case IPR2016-00219
`Patent 8,136,613
`_______________
`
`
`
`Before WILLIAM V. SAINDON, RICHARD E. RICE, and
`TIMOTHY J. GOODSON, Administrative Patent Judges.
`
`
`
`SAINDON, Administrative Patent Judge.
`
`
`
`DECISION
`Institution of Inter Partes Review
`37 C.F.R. § 42.108
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`Case IPR2016-00219
`Patent 8,136,613
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`I. INTRODUCTION
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`Petitioner requests an inter partes review of claim 28 of U.S. Patent
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`No. 8,136,613 (Ex. 1001, “the ’613 patent”). Paper 1 (“Pet.”). Patent
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`Owner filed a Preliminary Response to the Petition. Paper 7 (“Prelim.
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`Resp.”).
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`We have jurisdiction under 35 U.S.C. § 314, which provides that
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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.” Upon consideration of the Petition and
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`Patent Owner’s Preliminary Response, we institute an inter partes review of
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`claim 28 of the ’613 patent.
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`Our factual findings and conclusions at this stage of the proceeding
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`are based on the evidentiary record developed thus far. This is not a final
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`decision as to the patentability of claims for which inter partes review is
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`instituted. Our final decision will be based on the record as fully developed
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`during trial.
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`A. Related Matters
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`The parties represent that the ’613 Patent is asserted in MTD Products
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`Inc. v. Toro Company et al., 1:15-cv-00766-PAG (N.D. Ohio). Pet. 1; Paper
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`6, 2. Petitioner also has filed a petition challenging Patent Owner’s U.S.
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`Patent No. 8,011,458 (IPR2016-00194). Patent Owner identifies U.S. Patent
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`No. 8,944,191 as a related patent and U.S. Patent App. No. 14/613,102 as a
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`related application. Paper 6, 2.
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`Patent 8,136,613
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`B. The ’613 Patent
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`
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`The ’613 patent is directed to a steering and driving system. Ex.
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`1001, Abstract. In particular, the patent is directed to the steering systems of
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`Zero Turn Radius (ZTR) lawn mowers. Id. at 1:6–14; 4:39–40. Figure 5 of
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`the ’613 patent, reproduced below with color added and extraneous labeling
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`removed by the Board, depicts this steering system:
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`Figure 5 of the ’613 patent shows speed control device 28 (in orange), left
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`and right speed input members 48 (in orange), left and right control
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`members 36 (item numbers not shown, colored in green), left and right
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`integration links 44 and control rods 104 (in blue), and left and right drive
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`units 29 (in yellow). Control rods 104 are connected to drive units 29 in a
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`manner such that the distance of the rod fore or aft of a neutral position
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`causes the output of the corresponding drive unit to spin the wheel forward
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`or backward with increasing speed. See Ex. 1001, 9:32–44; Fig. 14.
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`Integration links 44 serve to integrate both speed control as well as steering
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`control. See, e.g., id. at 9:57–10:21 (explaining how the linkages work as
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`Patent 8,136,613
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`the vehicle is operated from straight forward movement to left forward
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`movement). Although the vehicle may include steerable wheels, turning can
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`also be facilitated by spinning the outside wheel faster than the inside wheel
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`(relative to the radius of the turn). See, e.g., id. at 10:8–21. To do this,
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`integration links 44 are connected in a manner such as to respond to forward
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`and reverse speed inputs from speed input members 48 as well as steering
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`inputs from control members 36. See, e.g., id. at 10:22–35 (providing an
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`example of how the various components interact to make a full forward left
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`turn), Fig. 9 (cited in this example); see also Figs. 5–13 (showing how the
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`various components interact to make each forward/reverse/neutral and
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`left/right/straight permutation).
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`C. Challenged Claim
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`Petitioner challenges claim 28, which is reproduced below.
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`28. A vehicle control system comprising:
`a pair of integration links, each integration link having
`a slot that is straight over substantially all of the
`length of the slot, and each integration link being
`movable in response to a speed input and configured
`to:
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`lie in a plane parallel to any flat surface on which
`a vehicle that incorporates the steering control
`system is used; and
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`transmit a drive signal that is a product of any
`received steering input and any received speed
`input.
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`Patent 8,136,613
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`D. Prior Art and Asserted Grounds
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`Petitioner asserts that claim 28 of the ’613 patent is unpatentable as
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`anticipated by Seaberg1 or obvious in view of Engel.2 Pet. 2. Petitioner also
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`relies on the declaration of Fred P. Smith, a Professional Engineer with a
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`background in mechanical engineering. Ex. 1004 ¶ 4.
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`II. ANALYSIS
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`A. Claim Construction
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`We interpret the claims of an unexpired patent using the broadest
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`reasonable interpretation in light of the specification of the patent. 37 C.F.R.
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`§ 42.100(b). Petitioner proposes a construction of the term “moveable.”
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`Pet. 14–17. Patent Owner disputes this construction and offers an alternative
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`construction, focusing on the “configured to” language. Prelim. Resp. 10–
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`26. Although these constructions talk about different terms in the claim,
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`both involve a determination of which structures are included in the claimed
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`integration link.
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`Petitioner’s position is that, where the claim says, “each integration
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`link being movable in response to a speed input,” the claim does not
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`preclude any particular type of movement. Pet. 14–15. In particular,
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`Petitioner asserts that “moveable” includes movement parallel to the ground
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`(horizontal movement) as well as movement relative to the ground (vertical
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`movement). See Pet. 15–16. Petitioner points out that movement of the
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`integration link shown in Figure 14 of the ’613 patent includes some amount
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`1 U.S. Patent No. 4,100,738, issued July 18, 1978 (Ex. 1002).
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`2 U.S. Patent No. 3,927,527, issued Dec. 23, 1975 (Ex. 1003).
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`of vertical movement in addition to horizontal movement. Id. Petitioner
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`adds that the prosecution history does not clarify the type of movement of
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`which the integration link is capable. Id. at 14.
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`Patent Owner argues that the term “moveable” must be considered in
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`view of the “configured to” language, and must be considered limited to
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`horizontal movement. Prelim. Resp. 10–11; see also id. at 10–26 (setting
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`forth Patent Owner’s construction). On the record before us, we do not
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`consider Patent Owner’s arguments persuasive; we address those arguments
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`in turn.
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`1. The Claim Language Itself
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`Patent Owner first argues that both the “lie in a plane” and “transmit a
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`drive signal” elements of the “configured to” clause must happen both
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`“simultaneously” and “during use” according to the claim language itself.
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`Id. at 12–15. Patent Owner’s argument is not persuasive because we are
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`apprised of no such conditions in the claims. As to the “lie in a plane”
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`element, it requires the integration link to “lie in a plane parallel to any flat
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`surface on which a vehicle that incorporates the steering control system is
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`used.” This element does say, “is used,” but that phrase modifies “surface.”
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`Specifically, the surface is the one “on which a vehicle that incorporates the
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`steering control system is used.” Thus, the integration link must “lie in a
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`plane” that is defined essentially as parallel to the ground. On its face, for
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`something to “lie” in such a plane does not mean it must “move” in a plane
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`or always lie in the plane. As such, we are not persuaded this element
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`requires the integration link to move or always to stay in the claimed plane;
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`it simply must be configured to lie in the claimed plane. As to the “transmit
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`a drive signal” element, it specifies that the integration link integrate speed
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`and steering inputs. There is nothing in the element that ties it to a particular
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`orientation or timing. Accordingly, Patent Owner’s argument that the
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`“configured to” elements somehow require the integration link at all times to
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`“lie in a plane,” or more clearly stated, to move only in a plane, is
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`unpersuasive.
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`Patent Owner’s arguments that In re Giannelli, 739 F.3d 1375, 1379
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`(Fed. Cir. 2014), or In re Venezia, 530 F.2d 956, 959 (CCPA 1976), support
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`their interpretation are unpersuasive. See Prelim. Resp. 13–15. In Giannelli,
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`the Federal Circuit held that a prior art chest press device was not “adapted
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`to be moved . . . by a pulling force” because the chest press device was
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`specifically adapted to be pushed; that the chest press device could be
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`improperly used by pulling did not anticipate because it was not configured
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`in a manner conducive to exercising by pulling (rowing). See Giannelli, 739
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`F.3d at 1380. In other words, the Federal Circuit found that there was a
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`structural difference between the claimed device adapted to be pulled and
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`the prior art device adapted to be pushed. Patent Owner does not explain
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`sufficiently how it understands Giannelli to require the “configured to”
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`language of claim 28 to be met under unclaimed conditions. As we
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`mentioned above, the claims do not require the integration link to be adapted
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`to move in a certain plane.
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`As to Venezia, Patent Owner takes an isolated passage out of context.
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`In Venezia, the Court of Customs and Patent Appeals held that a claim
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`directed to a kit of parts (as opposed to an assembled device) did not violate
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`the definiteness requirement of 35 U.S.C. § 112, second paragraph, because
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`even though the kit of parts was not assembled, and was structurally defined
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`in terms of how the parts would fit together if assembled, it was clear from
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`the claim what the structure of those parts would be: one that, once
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`assembled, would result in the completed assembly. See Venezia, 530 F.2d,
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`959. Venezia stands for the premise that structure can be defined by how the
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`elements are to be connected together at a later time. It does not stand for
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`the premise that all elements are to be construed necessarily as
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`simultaneously being met throughout every use. Claims read on structures
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`even if those structures sometimes, but not always, meet the claim language.
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`Cross Medical Products, Inc. v. Medtronic Sofamor Danek, 424 F.3d 1293,
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`1311 (Fed. Cir. 2005) (“[T]his court held that the district court had erred by
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`overlooking the rule that ‘an accused product that sometimes, but not
`
`always, embodies a claimed method nonetheless infringes.’”) (quoting Bell
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`Com. Research Inc. v. Vitalink Com. Corp., 55 F.3d 615, 622–23 (Fed. Cir.
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`1995). On this record, Patent Owner’s arguments that the claim itself
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`requires the integration link to move in a certain plane throughout every use
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`are unpersuasive.
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`2. The Claim Language in View of the Specification
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` Patent Owner argues that “[e]very embodiment described in the ’613
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`specification and every figure shows the integration links lying in a plane
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`parallel to the flat surface . . . when transmitting a drive signal.” Prelim.
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`Resp. 16; id. at 16–19 (going through examples). It is well settled that broad
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`claims should not be limited to the exemplary embodiments shown in the
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`specification. Superguide Corp. v. DirecTV Enter., Inc., 358 F.3d 870, 875
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`(Fed. Cir. 2004) (a particular embodiment appearing in the written
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`description may not be read into a claim when the claim language is broader
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`than the embodiment). In addition, the ’613 patent makes very clear that
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`“the present systems and devices are not intended to be limited to the
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`particular forms disclosed.” Ex. 1001, 11:35–39.
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`Patent Owner points to no passages in the ’613 patent that disclaim
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`the broader scope or otherwise mandate a narrow reading of the claim, nor
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`do we find any. Indeed, as Petitioner points out, and Patent Owner does not
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`contest, the integration link shown in the specification moves vertically, at
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`least to some degree. Pet. 15–16 (citing Ex. 1001, Fig. 14, depicting
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`integration link 44 and drive rod 104 attached to control mechanism 106,
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`which in turn has an arcuate slot to accommodate the vertical motion).
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`Patent Owner identifies a passage that indicates that the horizontal
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`orientation of the links “can reduce the amount of space that the steering
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`assembly 20 and control system 40 occupy.” Prelim. Resp. 19. (citing Ex.
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`1001, 7:18–20). There is no requirement that patents may only claim that
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`which satisfies every purpose and benefit described in its specification.
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`Further, there is no evidence that establishes that this particular benefit is the
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`sine qua non of the invention or is otherwise so significant such as to effect a
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`disavowal of claim scope. Accordingly, Patent Owner’s arguments that the
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`specification requires the integration link to move in a certain plane
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`throughout every use are unpersuasive.
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`3. The Claim Language in View of the Prosecution History
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`Patent Owner argues that the prosecution history supports its position
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`that “each integration link must lie in a plane parallel to a flat surface during
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`operation while transmitting a drive signal.” Prelim. Resp. 20; see also id. at
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`19–22 (setting forth the entire argument). As evidence, Patent Owner points
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`out that the examiner cited Ishimori (Ex. 2006) to show that “each link lies
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`in a plane parallel to the ground.” Id. at 20 (citing Ex. 1023, 146). Ishimori
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`depicts integration links that allegedly only move in the horizontal plane.
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`Ex. 2006, Fig. 2. That the examiner found a reference that would satisfy
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`Patent Owner’s proposed construction does not mean the examiner would
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`have agreed with Patent Owner’s proposed construction. The prosecution
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`history does not tell us whether the examiner believed Ishimori represents
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`the maximum breadth of the claim, because examiners need only find prior
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`art reading on something that falls within the scope of the claim. At best, the
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`prosecution history establishes that Patent Owner’s proposed construction is
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`not unreasonable; it does nothing to establish that Petitioner’s proposed
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`construction is unreasonable.
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`4. Petitioner’s Construction Does Not Render Limitations Meaningless
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`Patent Owner argues that Petitioner’s construction renders the
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`“configured to” language meaningless. Prelim. Resp. 22–26. We disagree.
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`Petitioner’s construction gives weight to these limitations and demands that
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`the prior art have certain structures to meet them. The integration link must
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`be configured to lie in the claimed plane. Although it need not lie in that
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`plane at all times, it must lie in the plane in a manner that meets the claims.
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`This distinguishes over art such as Engel, which, as Patent Owner argues,
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`discloses vertically-oriented integration links that never lie in the claimed
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`plane. Prelim. Resp. 33; see also Ex. 1003, Fig. 7 (noting element 78′ is
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`disposed vertically). Further, the claims do not require the integration link
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`to lie in that plane while the vehicle is moving but rather when the vehicle is
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`in use. The vehicle can be in use when not moving, e.g., simply idling, or
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`operating a scoop or mower. As to the “transmit a drive signal” limitation, it
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`requires the link to integrate speed and steering controls. As Patent Owner
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`pointed out, this limitation defines over art such as Ishimori; it is not
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`superfluous. Accordingly, Petitioner’s construction of the claim does not
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`read out limitations. The claims do not say, “lie in a plane . . . while
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`transmitting a drive signal,” or some similar language, to limit the claims to
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`the particular structure Patent Owner contends.
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`On this record, we agree with Petitioner that “moveable” means
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`“moveable in any direction” and that an integration link “configured to lie in
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`a plane” simply must be configured to lie in that plane and need not be
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`wholly bound in that plane at all times.
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`B. Description of the Asserted Prior Art
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`Petitioner relies on Seaberg and Engel. We provide an overview of
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`each of these references before turning to the individual grounds.
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`1. Seaberg
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`Seaberg describes an apparatus for driving and steering crawler
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`tractors or skid steer tractors, or the like. Ex. 1002, Abstract. Figures 1 and
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`2 of Seaberg, reproduced below, with colors added by Mr. Smith, depicts the
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`steering and speed linkage assemblies:
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`Ex. 1004 ¶ 52. Figures 1 and 2 of Seaberg depict left and right steering
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`petals 60, 70 (in yellow), speed control lever 40 (in purple), and left and
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`right follower links 95, 96 (in blue). As shown in Figure 1, when in the
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`neutral speed position, left and right follower links 95, 96 are parallel to the
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`ground. Ex. 1002, 3:58–64 (describing links 94, 95 as “in a horizontal
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`position”). Application of forward speed control lowers the links down the
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`guide 68 and 78 of the steering petals, and pulls connector link 92 or 94 to
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`activate the appropriate output from pump 10. See id. at 3:58–4:18.
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`Pressing on the steering petals causes the linkage to pull connector link 92 or
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`94, but unlike with activation of speed control lever 40, steering petals 60,
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`70 only operate to speed up or slow down one side of the vehicle, effecting
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`steering. See id. at 3:4–57.
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`2. Engel
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`Engel describes an apparatus for driving and steering tracked vehicles
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`having a pair of hydrostatic drive pumps. Ex. 1003, Abstract. Figure 7 of
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`Engel, reproduced below with colors added by Mr. Smith, depicts the
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`steering and linkage assemblies:
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`Ex. 1004 ¶ 33. Figure 7 of Engel depicts driving direction control lever 110
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`(in purple), rotating control head 90′ (in purple), steering control 115 (in
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`yellow), first sliding block 50′ (in yellow), and sliding block 70′ (in blue).
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`Inputs from steering control 115 and directional control lever 110 are
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`combined by way of their connection at pin assembly 80′ to produce a
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`resulting output at sliding block 70′, which is connected to the drive pump
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`and slows, and then reverses, the drive output as it moves to the right. See
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`Ex. 1003, 3:23–32, 4:34–66.
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`C. Petitioner’s Asserted Grounds
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`1. Anticipation of Claim 28 by Seaberg
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`Petitioner’s ground addresses each limitation of claim 28. Pet. 17–28.
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`In particular, Petitioner reads the claimed integration links on follower links
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`95, 96 (shown in blue in Figure 1 above), which have slots 97, 98 that are
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`straight. Id. at 20–21. The follower links also move in response to speed
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`input from speed control lever 41 (shown in purple in Figure 1 above). Id. at
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`21–22. Petitioner points out that Seaberg expressly describes the follower
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`links to be in a horizontal position. Id. at 22–25 (citing Ex. 1002, 3:62–64;
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`Fig. 1. (“[certain structures] are in a horizontal position, as are follower links
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`(95) and (96)”)). Petitioner also asserts that the follower links in Seaberg
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`transmit both drive and steering signals, by way of their connections to
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`speed control lever 40 and pedals 60, 70. Id. at 25–28.
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`Patent Owner argues that Seaberg does not disclose linkages parallel
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`to the ground during operation or while transmitting a drive signal. Prelim.
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`Resp. 27–32. As we explained above, however, the claim does not state that
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`the linkages need to be parallel to the ground “while transmitting a drive
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`signal.” Likewise, Patent Owner’s arguments that Seaberg’s arms are only
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`parallel to the ground “when idle” are also not commensurate in scope with
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`the claims. Moreover, from a logical standpoint, vehicles can be “in
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`operation” or “in use” without movement relative to a point on the ground,
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`i.e., when idling or when operating a mower, articulating arms, scoops, or
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`other connected tools.
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`In view of the record before us, we are persuaded that Petitioner has
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`shown a reasonable likelihood that it will prevail in showing that claim 28 is
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`anticipated by Seaberg.
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`2. Obviousness of Claim 28 by Engel
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`Petitioner sets forth how it believes Engel addresses each limitation of
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`claim 28. Pet. 28–42. Petitioner asserts that the integration links are sliding
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`blocks 70, 70a (also shown as 70′ in blue in Figure 7 above). Pet. 31.
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`According to Petitioner, “Engel itself is silent on the particular orientation of
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`the multiplier, which includes sliding blocks (70, 70a).” Id. at 34. Petitioner
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`adds that “[a] person of ordinary skill in the art reviewing Engel would
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`understand that the orientation of the integration links . . . is a design
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`choice.” Id. Petitioner provides evidence that vertically-oriented links were
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`known, as evidenced by Case. Id. at 35–36 (citing Ex. 1019). Petitioner
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`provides evidence that horizontally-oriented links were known, as also
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`evidenced by Case. Id. at 36. Thus, according to Petitioner, “[t]he prior art
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`reflects that a person of ordinary skill in the art may readily design a vehicle
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`using integration linkages so that the linkages are oriented parallel or
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`perpendicular to the surface on which the vehicle may operate.” Id. at 37.
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`(citing Ex. 1004 ¶¶ 34–37, 83–89). The proposed modification is to rotate
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`the assembly of items 50′, 70′, 80′, and 90′, shown in Figure 7 of Engel, so
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`that they are parallel to the ground, and, as a matter of “simple substitution,”
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`modify the linkages from steering input 115 and directional input 110
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`accordingly. Id. at 37–39.
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`Although it is clear that from Petitioner’s evidence that linkages were
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`known to be oriented vertically or horizontally, what is missing here is
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`reasoned explanation of why it would have been obvious to a person of
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`ordinary skill in the art to modify Engel’s linkage in the manner proposed.
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`In particular, the orientation of items 50′, 70′, 80′, and 90′ in Engel are
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`vertical, which is a configuration that connects them in a straightforward
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`manner to steering input 115 and directional input 110. Rotating items 50′,
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`70′, 80′, and 90′ to the horizontal plane would require different linkages, as
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`Petitioner acknowledges. Pet. 37–38 (“a person of ordinary skill in the art
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`would recognize that a simple substitution of mechanical linkages may be
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`performed to orient the mechanical control mechanism”). Petitioner offers
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`reasons why the modification to Engel is possible, but no reason for
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`considering such a modification in the first place. Without such reasoning
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`and with only the evidence and arguments before us, the only reason we can
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`discern to rotate those components of Engel, and to come up with different
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`linkages so that it works in that orientation, is so that the components are
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`horizontal, i.e., solely to meet the claim limitations. Such is the classic
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`indicator of impermissible hindsight.
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`On this record, we are not persuaded Petitioner has shown a
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`reasonable likelihood that it would prevail in showing the subject matter of
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`claim 28 would have been obvious in view of Engel.
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`In view of the foregoing, it is hereby:
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`III. ORDER
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`ORDERED that inter partes review of the ’613 patent is instituted on
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`the ground of whether claim 28 is anticipated by Seaberg;
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`FURTHER ORDERED that, pursuant to 35 U.S.C. § 314(c) and 37
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`C.F.R. § 42.4, inter partes review of the ʼ613 patent shall commence on the
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`entry date of this Order, and notice is hereby given of the institution of a
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`trial; and
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`FURTHER ORDERED that no ground other than that specifically
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`provided above is authorized.
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`PETITIONER:
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`Cyrus Morton
`camorton@rkmc.com
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`PATENT OWNER:
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`John Cipolla
`jcipolla@calfee.com
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`Mark McDougall
`mmcdougall@calfee.com
`
`Tracy Johnson
`tjohnson@calfee.com
`
`
`
`
`17