Advanced Aerospace Technologies, Inc. v. United States ( 2015 )


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  •      Jfn tbe mntteb          ~tates         Inc.,
    122 Fed. Cl. at 453
    .
    On October 16, 2015, AATI, however, filed an Opposition To A Ruling On Challenges To
    Indefiniteness Made Solely Ry Boeing ("Pl. Jur. Indef."), asserting that the c-0urt did not have
    j urisdi ction to adjudicate the eight claim terms that Boeing, alone, argues are indefinite. Pl. Jur.
    Indef. at 1- 2. AATI 's October 16, 2015 filing contends that, as an RCFC 24 intervenor, Boeing
    "cannot independently assert defenses or counterclaims" and any ruling has no binding effect since
    Boeing will have the opportunity to re-litigate the indefiniteness of those terms in United States
    District Court. In short, where Boeing attacks indefiniteness without the Government, it "is a
    dispute between private parties that is outside the Court's jurisdiction." Pl. Jur. Indef. at 1-2.
    ATTl relies on Penda Corp. v. United States, 
    44 F.3d 967
    , 970 (Fed. Cir. 1994), where the
    United States Court of Appeals for the f edcral Circuit held that"[al third-party defendant noticed
    under [RCFC] 14(a)(1) may assist the [Government] in the defense of the case, or it may offer
    additional evidence on its own behalf and advance such legal contentions as it deems appropriate
    in the protection of its interest." (internal quotations omitted). According to AATI, since Boeing
    is an intervenor under RCFC 24, the court may adjudicate indefiniteness challenges only if they
    are made by both the Government and Boeing. Boeing and the Government respond that,
    regardless of whether parties are third-party defendants under RCFC 14, or third-party intervenors
    under RCFC 24, both rules allow third parties to "offer additional evidence on [their] own behalf
    and advance such legal contentions as [they deem] appropriate in the protection of [theirl interest."
    In re Uusi, LLC, 549 Fed. Appx. 964, 967 (2013) (alteration in original) (quoting Penda, 44 f.Jd
    at 970). for this reason, the Uusi Court saw no reason to deny "the right to participate in [a] case
    merely because [a party was] brought in under Rule 14," as opposed to Rule 24. 
    Id. In other
    words, the Government and Boeing arc asserting indefiniteness as "parallel affirmative defenses,"
    that do not exceed the court's jurisdiction. Docing Resp. lndcf. at 7.
    Although In re Uusi is not precedential, the reasoning therein is persuasive and the court
    has determined that it has jurisdiction to adjudicate certain claim terms or phrases challenged by
    Boeing, but not joined by the Government. Accordingly, Boeing properly may "offer additional
    evidence on [its] own behalf and advance such legal contentions as [it deems] appropriate in the
    protection of [its] interest." Jn re Uusi, LLC, 549 Fed. Appx. at 967 (alteration in original) (quoting
    Penda, 44 F.Jd at 970); see also Commil USA, LLC v. Cisco Sys., Inc., 
    135 S. Ct. 1920
    , 1929
    (2015) ("any accused infringer who believes the patent in suit is invalid may raise the affirmative
    defense of invalidity.").
    6
    B.     Controlling Precedent Regarding Claim Indefiniteness.
    Section l l 2(b) of the Patent Act requires that the patentee "particularly point[] out and
    distinctly claim[] the subject matter which the inventor or a joint inventor regards as the invention."
    35 U.S.C. § l 12(b). Failure to do so, renders the patent vulnerable to an indefiniteness challenge.
    See 35 U.S.C. § 282 (b)(J)(A) (stating that a "failure to comply with any requirement of section
    112, except ... the failure to disclose the best mode" renders the patent invalid.).
    In Nautilus, Inc. v. Biosig Instruments, Inc., 
    134 S. Ct. 2120
    (2014), the United States
    Supreme Court held that the standard for indefiniteness under 35 U.S.C. § l 12(b), is no longer
    whether the claim language is "insolubly ambiguous" or "not amenable to construction." 
    Id. at 2130
    ("We agree ... that such terminology can leave courts and the patent bar at sea without a
    reliable compass."). Therein, the United States Court of Appeals for the Federal Circuit's prior
    indefiniteness standard was rejected as too lenient, requiring instead an elevated degree of
    specificity beyond simply a court's ability to "ascribe some meaning to a patent's claims." 
    Id. Instead, Nautilus
    requires that, "a patent is invalid for indefiniteness if its claims, read in light of
    the specification delineating the patent, and the prosecution history, fail to inform, with reasonable
    certainty, those skilled in the art about the scope of the invention." 
    Id. at 2124
    (emphasis added).
    Although, the "reasonable certainty" standard "mandates clarity," it also " recogniz[es] that
    absolute precision is unattainable" and that "some modicum of uncertainty ... is the 'price of
    ensuring appropriate incentives for innovation." Id at 2128-29 (quoting Festo Corp. v. Shoketsu
    Kinzoku Kogyo Kabushiki Co., 
    535 U.S. 722
    , 732 (2002)).
    IV.    THE CLAIMS CHALLENGED FOR INDEFINITENESS AND THE COURT'S
    RULINGS.
    A.          United States Patent No. 6,874,729
    1.        Claim S: "Sensor"
    Claim Language: "a sensor being attached to said recovery system"
    The Party Asserting Indefiniteness: Government
    The Court's Ruling: Not Indefinite
    a.     The Parties' Arguments
    The Goverrunent argues that, if"'sensor' docs not invoke [35 U.S.C.] § 112[(1)], then claim
    5 is indefinite under § 112[(b)], because it recites functional limitations, without adhering to the
    limits set out in § 112[(1)]." Gov't PHMB at 23-24. The term "sensor" is a functional claim
    limitation, because AA Tl' s construction ("a device that responds to a stimulus ... and transmits
    a resulting impulse") is "purely functional." Gov'l PHMB at 24. functional limitations, however,
    create "a generic and unbounded claim scope" that is indefinite under the Nautilus "reasonable
    certainty" test. Gov't PHMB at 24.
    AATl counters that the Government's argument is circular, because the court's Markman
    Order mooted "the allegation by the Government and Boeing that the term 'sensor' is indefinite."
    AATI 8/3 1/ 15 Notice at 3. The court rejected the argument that a skilled artisan "would understand
    7
    'sensor' to mean 'a device that responds to a stimulus ... and transmits a resulting impulse.'"
    AATI Resp. at 22. Therefore, "[t]here is nothing left [for the court] to adjudicate." AATI Resp.
    at 22.
    b.     The Court's Ruling
    The Government's argument that the court's construction of the term "sensor" establishes
    functional limitations that result in "a generic and unbounded claim scope" is without merit. Gov't
    PHMB at 24. 'rbe court construed "sensor" to mean "a device that responds to a stimulus (such as
    heat, light, sound, pressure, signals, magnetism, or a particular motion) and transmits a resulting
    impulse." See Advanced Aerospace Technologies, 
    Inc., 122 Fed. Cl. at 480
    . Therefore, a skilled
    artisan would know, with reasonable certainty, "which sensors arc appropriate for the claim." 
    Id. (ruling that
    the required sensors are those used "for guidance in maneuvering said aircraft into
    engagement with said recovery system" claim limitation). The Government failed to introduce
    any evidence to the contrary.
    For these reasons, the court has detcnnined that the term "sensor" is not indefinite.
    2.      Claim 5: "Near the Point of Engagement"
    Claim Language: "a sensor being attached to said recovery system near the point ofengagement
    of said aircraft to said recovery system"
    The Parties Asserting Indefiniteness: Government & Boeing
    The Court's Ruling: Indefinite
    a.      The Parties' Arguments
    The Government argues that the phrase "near the point of engagement" is indefinite,
    because the surrounding claim language adds ambiguity to what "near" means "by generically
    referencing 'a point of engagement[.]' " Gov't PHMI3 at 27. In addition, the specification does
    not define one exact "point of engagement." Gov't PHMB at 27. Instead, as seen in Figure 21,
    the "point of engagement" can be "any location along the vertically oriented aiTcstment line."
    Gov't PHMB at 27. As such, a "sensor" cannot be "near" all points of engagement, because that
    would "render the 'near the point of engagement' limitation superfluous." Gov't PHMB at 27.
    The specification's explanation of placing the "sensor" at the "correct height" docs "nothing to
    resolve the ambiguity in the phrase 'near the point of engagement,'" because no detail is provided
    as to what the "correct height" is. Gov't PHMI3 at 28; see also '729 patent, col. 8:4-5. The
    Government adds that AATl's interpretation of the "sensor" placement in Figme 27 (i.e., any
    placement of the "sensor" on the :'boom" is "near the point of engagement," citing JBR at 72) is
    impermissible, because nothing in Figure 27 nor the intrinsic evidence suggests that a "person of
    ordinary skill in the art would be reasonably certain of how near a sensor would have to be to the
    point of engagement to fa ll within the scope of the claim." Gov't PHMB at 28.
    Boeing adds that, "there is no art-recognized definition for the term 'near"' and AATl's
    "proffered dictionary definition" of "near," i.e., "close to someone or something in distance," does
    not clarify the scope of the claim. Boeing PlIMB at 23. Moreover, the case that AATI relies on
    in the Joint Claim Construction Submission, Power-One, Inc. v. Arte.'{}'Yl Techs., Inc., 
    599 F.3d 8
    1343, 1348 (Fed. Cir. 201 0), "undermines [their] own argument." Boeing PHMB at 24 (explaining
    that the patent at issue in Power-One "provided specific guidance on what 'near' meant, unlike in
    the present case[.]").
    AATI responds that Figures 6, 27, and 28, although not drawn to scale, provide specific
    guidance about the sensor's placement. AATI Resp. at 25. This is so, because the sensor's
    placement in Figures 6, 27, and 28 " depend on the ability to perform the intended task-i.e.,
    guidance in maneuvering said aircraft into engagement with said recovery system." AATI Resp.
    at 25. Therefore, the sensor must be positioned "close enough to the an-cstment line" to perform
    this task. AATI Resp. at 25. AATI adds that claim 5 also is not indefinite, because "absolute or
    mathematical precision is not required." AATI Resp. at 27 (citing interval Licensing LLC v. AOL,
    Inc., 
    766 F.3d 1364
    , 1370 (Fed. Cir. 2014) cert. denied, 
    136 S. Ct. 59
    (2015)). AATI also cites
    several other cases where "'near' has been construed per its plain and ordinary meaning, as not
    being indefinite." AATI Resp. at 27-28. In response to the Government's argument that "point
    of engagement" is too vague, as it is "not a single defined location," AATI responds that the
    specification and figures provide sufficient guidance fo r a skilled artisan to understand the possible
    locations of an engagement point. AATI Resp. at 25, 28. For example, Figure 5 of the '72 9 patent
    points to several locations on the "tow line" where a pilot can "intersect" with an aircraft, while
    using the "forward looking camera" to assist in maneuvering. AATI Resp. at 28-29 (citing '729
    patent, col. 11:3 7-45). AATI also explains that having multiple points of potential engagement
    does not render claim 5 indefinite, because " a skilled artisan would appreciate the impracticability
    .. . of striking the arrestment line at the exact same point every time." AATI Resp. at 29.
    Therefore, the phrase "near the point of engagement" "avoidrs] confusion," by informing a ski llcd
    artisan where to place a "sensor," for the purpose of "maneuvering said aircraft into engagement
    with said recovery system." AATI Resp. at 29. Without this directive, "a skilled artisan could
    place the sensor anywhere on the recovery system." AATI Resp. at 29.
    AATI adds that failin g to provide a definition of the term "near" in the intrinsic evidence
    "docs not support indefiniteness," because "[t)he plain meaning of claim language ordinarily
    contro ls W1less the patentee acts as his own lexicographer." AATl Resp. at 3 0 (citing Inter Digital
    Commc 'ns, LLC v. Int 'l Trade Comm 'n, 
    690 F.3d 1318
    , 1324 (Fed. Cir. 2012) ("The plain meaning
    of claim language ordinarily controls unless the patentee acts as his own lexicographer and
    provides a special definition for a particular claim term or the patentee disavows the ordinary scope
    of a claim term either in the specification or during prosecution.")). Therefore, it does not matter
    if the specification lacks an explanation of what "is near and what is not near," because the context
    of the claim language "narrows the allowable sensor placements" and requires that the sensor "be
    positioned close enough to the point of engagement" to be useful "for guidance in maneuvering
    said aircraft into engagement with said recovery system." AATI Resp. at 30.
    b.      The Court's Ruling
    As a matter of law, "(c]laim language employing terms of degree has long been found
    definite where it provided enough certainty to one of skill in the art when read in the context of
    the invention." Interval Licensing, 766 f.3d at 1370. But, when a word of degree is used, the
    claim language must provide "some standard for measuring that degree. Biosig Instruments,
    Inc. v. Nautilus, Inc., 
    783 F.3d 1374
    , 1378 (Fed. Cir. 2015) (decision on remand from United States
    Supreme Court) ("remand"). Specific and unequivocal examples may be sufficient to provide a
    9
    skilled artisan with clear notice of what is claimed. See DDR Holdings, LLC v. Hotels.com, L.P.,
    773 I7.3d 1245, 1260 (Fed. Cir. 2014) (citing Enzo Biochem, Inc. v. Applera Corp., 
    599 F.3d 1325
    ,
    1334-35 (Fed. Cir. 20 I 0) (determining that the phrase "not interfering substantially" was definite,
    as a matter of Jaw, where intrinsic evidence provided multiple examples that would allow a skilled
    artisan to determine whether a particular chemical bond linkage group would "interfer[ e]
    substantially" with hybridization)).
    AATI cites tlu·ee cases in support of the proposition that "near" has been held to be definite
    post-Nautilus: Innovative Display Techs. LLC v. Hyundai Motor Co., No. 2:14-CV-201-JRG, 
    2015 WL 2090651
    (E.D. Tex. May 4, 2015), Largan Precision Co. v. Genius Elec. Optical Co., No.
    13-CV-02502-JD, 
    2014 WL 5358426
    (N.D. Cal. Oct. 20, 2014), and Exergen Corp. v. Brooklands,
    Inc., No. 12-12243-DPW, 
    2014 WL 4049879
    (D. Mass. Aug. 15, 2014).
    In Innovative Display Techs., the district court relied on the specification in determining
    that the term "near" was definite. See 
    2015 WL 2090651
    , at * 17 (ruling that the claim term
    "positioned near the light emitting surface" was definite). In that case, the term "near" described
    the distance between two panels that were adhered together. See U.S. Patent No. 7,300,194, col.
    6. Therein, the patentee used the term "near" to account for the fact that there would be an air gap
    between the two surfaces when adhesive was applied along the edges of the panels. See 
    id. But, the
    use of "near" to describe the distance between the panels was found definite, because it was
    limited by the thickness of the adhesive applied between the panels. 
    Id. at *
    17. In this case,
    however, the only context provided in the '729 patent specification for sensor placement is a
    sentence that states: "if the onboard camera fai ls, gets fowled by oil or water or whatever a camera
    201 and/or 205 can be placed on the two line or recovery lines above and to the side of the intended
    arrestment point as shown in fig. 6 and looking in the direction of the oncoming aircraft: with field
    of views 203 and 207 to help the pilot steer the aircraft in." '729 patent, col. 7:45-51. This context
    docs not compare with the specificity provided in Innovative Display Techs.
    In Largan Precision Co., the court was able to rely on "an industry convention" to establish
    "strong evidence that the specification and claims apprise a person of ordinary ski ll in the art with
    reasonable certainty" of the scope of the term. See 
    2014 WL 5358426
    , at *8. Jn this case, however,
    no evidence has been proffered about an industry convention that defines what "near" would mean
    to a person skilled in the art in attempting to direct the placement of sensors on the support structure
    of an urunarmcd aerial vehicle ("UA V") recovery device. The Largan Court's construction of
    "near," to mean "as close as ... possible," was limited to the closest functioning position. In this
    case, however, AATl asks for a construction that includes the entire functioning range of the sensor
    heing employed. That would, however, read the limitation out of the claim and allow for the sensor
    to be placed anywhere on the support structure, if the distance is within the functioning range of
    the employed sensor. !n addition, such a construction conflicts with the plain and ordinary
    meaning of the term "near."
    In Exergen, the trial court construed the term "in the vicinity of," not "near." Exergen,
    
    2014 WL 2090651
    , at * 17. Therefore, AATI' s reliance on this case seems misplaced.
    In this case, the specification of the '729 patent docs not use this term, so there is no
    reasonably certain standard for measuring when the sensors are "near" the point of engagement
    nor examples of when the sensors would not be considered " near." 10/29/ 15 TR 19: 17- 19
    10
    (Government Counsel: "There are multiple possible definitions of "near," and there is no way to
    pick one standard.''). As such, there was no context for a person of ordinary skill in the art to
    understand the scope of the disputed term with "reasonable certainty." 
    Nautilus, 134 S. Ct. at 2124
    .
    And, as the Largan court observed, "just because a certain claim term is definite in the context of
    a different patent does not necessarily mean that it is here." largan, 
    2014 WL 5358426
    , at *8.
    For these reasons, the court has determined that the term "near the point of engagement"
    is indefinite.
    3.      Claim 44: "Outboard Portion"
    Claim Language:
    • "and a capture device mounted on an outboard portion of the at least one wing"
    • "a hook attached to an outboard portion of a wing of said aircraft"
    The Parties Asserting Indefiniteness: Government & Boeing
    The Court's Ruling: Indefinite
    a.      The Parties' Arguments
    The Government argues that AATI' s construction of "outboard," i. e., "away from the
    vessel's centerline or the airplane's centerline," is not sufficient to determine the scope of the term
    "outboard portion." Gov't PHMB at 15. "Outboard" is a term describing "relative position with
    respect to the centerline of the aircraft and some other reference point on the airplane. " Gov't
    PHMB at 15. Because the agreed construction does not include "an additional reference point,"
    all points along the aircraft's wing could be "outboard" of the aircraft's centerline. Gov't PHMB
    at 15. For example, "outboard portion" could mean "a position farther away from the centerline
    of an airplane than some other reference point," although both the '729 and '306 patents do not
    provide a point of reference, "each fails to describe the scope of the patentee's invention." Gov't
    PHMB at 15-16. And , there is "no significant difference" between the original construction
    proposed by i\.ATI, i.e., "in a position closer or closest to either of the wingtips of an aircraft," and
    the one to which the parties agreed. Gov' t PHMB at 20; see also JBR at 61. Moreover, AATl's
    construction of "outboard" does not address the indefiniteness aspect of the term "outboard
    portion." Gov't PHMI3 at 21.
    Much like the Government, Boeing asserts that the terms "inboard" and "outboard" is a
    directional reference that could include "the outer quarter of the wing, the outer third of the wing,
    or the outer half of the wing.'' Boeing PHMB at 20. Boeing faults AATI for failing to include
    demarcating measurements, suggesting this failure was an affirmative choice "not to be clear and
    concise." Boeing PHMB at 20 ("the inventors certainly could have, for example, specified a
    dependent claim that the outboard portion is hook [sic] was inboard by x meters or by x percentage
    of the wingspan."). Then, Boeing takes issue with the fact that neither AATl's proposed
    construction-"in a position closer or closest to either of the wingtips of an aircraft"-nor the
    specification, claims, or prosecution history include an explicit reference to a center line. Boeing
    PHMB at 21. In Boeing's view, any reference to the aircraft's center line is "an attempt to remedy
    the ambiguity" and "appears to have been concocted as part of this litigation." Boeing PHMB at
    11
    21. T herefore, Boeing concludes that these shortcomings make claims 1 and 21, and any cl aims
    that depend thereon, indefinite. Boeing PHMI3 at 21.
    AATI cow1tcrs that the parties' agreed construction of "outboard portion" is not indefinite,
    because there is sufficient support in the claim language, specification, and prosecution history to
    ascertain the placement of the hooks. AATI Resp. at 18-19. The intrinsic evidence supports the
    propos ition that "•outboard portion' would be understood as ' closer or closest to either o f the
    wingtips of an aircraft."' AATI Resp. at 18- 19. AATI also responds that the Government' s and
    Boeing's arguments about the distinction between an "inboard" and "outboard" portion is
    irrelevant, because a "skilled artisan would understand that a hook placed on an 'outboard portion'
    of the wing is not limited to a single location." AATf Resp. at 20 (stating that Nautilus "reject[s]
    the Government 's and Boeing's demands for pinpoint accuracy," because "absolute precis ion is
    unattainable"). AA TI concludes that there was "no disagreement between the Government and
    [AATIJ as to what the ['outboard portion') term means," and an "agreed meaning" is "strong
    evidence of definiteness." AATI Resp. at 21 (citing Procter & Gamble Co. v. Team Technologies,
    Inc., 
    46 F. Supp. 3d 764
    , 769 (S.D. Ohio 2014) ("[Expcrt]'s agreement with the Court's
    construction is strong evidence that the unnoticeable limitation is not indefinite. ").
    b.      The Court's Ruling
    AA Tl's reliance on the p lain meaning of the term "outboard portion" to satisfy the
    "reasonable certainty" requirement under Nautilus is insufficient. Even if AA TI is correct th at a
    ski ll ed artisan would understand that the " ideal" hook placement on the "outboard portion" of an
    aircran wing is " as close to the wi ngtip as possibl e," the intrinsic evidence contains no guidance
    that would inform a skilled artisan, with reasonable certainty, as to where the "outboard portion"
    begins and ends. AATT Resp. at 21. Specifically, any point on an aircraft's wing could be
    considered as part of the "outboard portion," since each point would be "away from the vessel's
    centerline or t he airplane's centerline." AATI Resp. at 18. If, in fact, AATI intended to claim the
    entire wing as a location for the hook placement, then the letm "outboard portion" would not be
    necessary. But, the term "outboard portion" suggests that AA TI intended to specify a particular
    segment of the wing in the claim, but fail ed to do so. Without more direction, reference to the
    "outboard portion" of the wing would not inform a skilled artisan with reasonable certainty as to
    the scope of the inve ntion.
    For these reasons, the court has determined that the term "outboard portion" is indefinite.
    12
    B.        United States Patent No. 7,097,137
    1.        Claims 1, 20: "Releasably Secure"
    Claim Language:
    • "said hook being adapted to releasably secure said line to said aircraft"
    • "the capture device comprising a hook adapted to releasably secure the flying object to
    the aooaratus."
    The Party Asserting Indefiniteness: Boeing
    The Court's Ruling: Not Indefinite
    a.     The Parties' Arguments
    Boeing posits two arguments as to why the term "releasably secure" is indefinite. First,
    there is no art-recognized definition of "releasably secure." Boeing PHMB at 25. Second, the
    asserted patents do not provide any objective means for one of skill in the art reasonably to
    ascertain when a particular aircraft is "relcasably secure" versus "non-releasably secure." Boeing
    PHMB at 25.
    AATT counters that "releasably secure" is a "simple term with a readily apprehended
    meaning," i.e., an aircraft that can first be secured, then released, if desired. AATI Resp. at 43. In
    support, AA TI argues that, "rcleasably" is "simply the adverbial form of ' releasable' i.e., capable
    of being released." AATl Resp. at 43. Moreover, the disputed tenn would be clear to a skilled
    artisan in light of the purpose of the '137 patent. AAl'l Resp. at 43. Finally, AATI cites to a case
    wherein "releasably secure" was construed as "something that is bound, fastened, or held back,
    but is configured such that it can be freed from being bound, fastened or held back." AATf Resp.
    at 43 (citing Muzzy Prods .. Corp. v. Sullivan Indus., Inc., 
    194 F. Supp. 2
    d 1360, 1372 (N.D. Ga
    2002)).
    b.     The Court 's Ruling
    A patent claim is definite, where a claim term has an objective meaning in the art and the
    patent uses the term consistently with that meaning. See DDR 
    Holdings, 773 F.3d at 1260
    ("Here,
    though NLG attempts to characterize "look and feel" as purely subjective, the evidence
    demonstrates that "look and feel" had an established, sufficiently objective meaning in the art, and
    that the '399 patent used the te1m consistent with that meaning."). "Releasably secure" is a term
    that would be reasonably clear to a person of skill in the art, because it refers to the purpose of
    these patents-to launch and recover unmanned aerial vehicles. '137 patent, col. 3: 1-4 ("It is an
    object of the invention to provide a simple, compact, inexpensive, Iightweight, and safer method
    oflaunching and retrieving conventional fixed wing aircraft from a point location.").
    For these reasons, the court has determined that the tenn ''releasably secure" is not
    indefinite.
    13
    2.      Claims 9, 19: "Smooth Continuation"
    Claim Language:
    •   "said hooking having an open entrance forming a smooth continuatio11 of a leading edge
    of said wing."
    •   "the open entrance forming a smooth continuation of the leading edge.''
    The Pa rty Asserting Indefiniteness: Boeing
    The Court's Ruling: Nol Indefinite
    a.      The Parties' Arguments
    The Government and AATI assign different meanings to the phrase "smooth continuation.''
    In the Government's view, a "smooth continuation" is one where "the open entrance of the hook
    and the leading edge of said wing form a flat, even and continuous surface without any bumps,
    ridges, or gaps." JBR at 96. The Government asserts that the term "smooth continuation" is
    restricted to a structural limitation and that AATI's alleged attempt at defining "smooth," to
    exclude only obstructions that deflect the arrestment line, is not supported by either the intrinsic
    or extrinsic evidence. JBR at 97. But, AATI's construction includes unsupported "functional
    limitations," more specifically, an exclusion of "only bumps, gaps or ridges ' that would deflect
    the line."' JI3R at 97.
    Boeing advances five arguments to show that "smooth continuation" is indefinite. First,
    "smooth continuation" is "a completely subjective term without any art-recognized meaning."
    Boeing PHMI3 at 26. Second, the patent fails to offer "any written description support" for what
    a "smooth continuation" is. Boeing PHMB at 28. Third, AATI's construction is "inherently
    inconsistent," because the initial dictionary definition AATT offered for "smooth''-"not having
    any bumps, ridges, or uneven parts"-is substantially different from AATI's subsequent position
    that "smooth" means "as free of bumps and ridges as possible," or, as Boeing suggests, allowing
    "for some bumps, ridges, or uneven parts." Boeing PHMB at 27 (citing JBR at 92) (emphasis
    added). Fourth, AATf could have provided greater clarity by "specif[ying] a minimtun angle
    between the wing surface and the hook surface" or by using a "specific measurement, such as
    surface rouglmess," that Boeing suggests is a "well-known parameter in engineering." Boeing
    PHMB at 27. Herc, AA'fl failed to provide an "objective means" to determine whether a particular
    configuration falls within the scope of the term, i.e., whether an arrangement is "smooth" or "non-
    smooth." I3oeing PI IMB at 27; see also .IBR at 93. finally, Boeing joins in the Government's
    view that AATI's construction adds an unsupported claim limitation. Boeing PHMB at 29. In
    sum, since the meaning of "smooth continuation" is subjective, lacks written description support,
    and seeks to import an unsupported function al limitation, it is indefinite. Boeing PHMB at 29.
    AATI counters that "smooth" is derived from the Joint Claim Construction, where the
    parties agree that this term is defined as "sufficiently free of bumps and ridges that it causes no
    resistance to sliding ... [i]n other words, the continuation should be as smooth as possible, that is,
    as free of bumps and ridges as possible." JBR at 92. Therefore, in the context of the invention,
    an arrangement is sufficiently "smooth," ifthe "line is not deflected from entering the hook." JBR
    at 92. /\A Tl adds that thi s construction is also consistent with the plain-meaning of "smooth," as
    understood by a person of ordinary skill in the art. AATI Resp. at 44; see also Cumming Deel.~
    14
    67 ("fl]he fu nction of the hook is to engage with the arrestmcnt line" and that "it is important for
    the rope to be able to slide smoothly into the hook."). Thus, "[a]n artisan .. . would have joined
    the wing and hook with adequate smoothness for this purpose." AATI Resp. at 44 (internal
    punctuation omitted).
    AA TI defines "continuation" to mean a "transition from one structure (the wing) to a
    second structure (the hook)" and states that " there may be a break in the surface due to the
    transition." JBR at 92. In AATf'.s view, "th[e] transition is smooth ... if the line can pass freely
    over it." AATI Resp. at 45 (citing Cumming Deel. at ~ 69). AATI disagrees with the
    Government's construction of "smooth continuation," as "a flat, even and continuous surface
    without any bumps, ridges, or gaps," because the Government erroneously considers
    "continuation" and "continuous" as interchangeable. JBR at 96 (emphasis added). Instead, AATI
    points out that a "continuation" is a "transition" and necessari ly requires "some kind of break in
    the smface." AATI PHMB at 44. Therefore, adopting the Government's "continuous"
    construction would "add a new limitation" that would "exclud[e] transitions between the wing and
    the hook," and require the wing and hook to be "molded from the same piece of metal." AA TI
    PHMB at 45. The Government's reliance on Figure 3 of the '729 patent also is misplaced, because
    it shows a "non-continuous transition between the wing and hook ("26")[, l represented by the tape
    ("270"), which must be made of a different material from the wing and hook." AATI PHMB at
    44--45 (referencing '729 patent, Fig. 3). Therefore, as used in the relevant claims, "smooth" and
    "continuation" are not indefinite.
    b.      The Court's Ruling
    The United States Court of Appeals for the Federal Circuit has observed that, a patent claim
    may be definite, even where a limitation has no explicit upper bound other than what is practically
    required. See HalliburtonEnergy Serv., Inc. v. M-I LLC, 
    514 F.3d 1244
    , 1253 n. 5 (Fed. Cir. 2008)
    ("Of course, a claim may contain a Umitation that includes no explicit upper bound at all (e.g., a
    claim limitation that requires 'at least 5%' of an element). Where a limitation does not contemplate
    an upper bound beyond what is practically required (e.g., the total percentage must be less than
    100%), the limitation may not present definiteness concerns."). Here, it would be reasonably clear
    to a skilled artisan to "join[] the wing and the hook with adequate smoothness" so that the line
    would not "snag" or be deflected as it transitioned from sliding along the wing to sliding into the
    hook. To detennine whether the continuation is sufficiently "smooth," likely would require a
    person of ordinary skill in the art to test the arrestment line, i.e., slide it along the wing from leading
    edge into the hook to verify that the line did not snag while traveling fro m the wing edge into the
    hook. This exercise would provide even a person of modest mechanical experience with
    "reasonable certainty" about why such an arrangement is necessary.
    With respect to the term "continuation," Figure 3 of the ' 13 7 patent shows that the wing
    and hook arc two .separate items, adjoined to form a "transition" over which the arrestment line
    must cross in the course of arrcstment and recapture of an aircraft. The non-continuous, but
    adjoined nature of the wi ng, 26 (hook), and the 270 (tape) clements shown in Figure 3 of the '137
    patent render the Government's construction, i.e., "without any bumps, ridges, or gaps," a
    conceptual impossibility. Therefore, the intrinsic evidence, particularly Figure 3 of the '137
    patent, is sufficient to provide a skilled artisan with "reasonable certainty" as to what is meant by
    a "smooth continuation."
    15
    For these reasons, the court has detennined that, as used in the '729 patent, the term
    "smooth continuation" is not indefinite.
    3.      Claim 30: "Substa ntially Arrested"
    Claim Language: "sliding of the line through the hook is s11bsta11tially arrested."
    The Parties Asserting Indefiniteness: Government & Boeina
    The Court's Ruling: Not Indefinite
    a.      The Parties' Arguments
    The Government argues that claim 30 is indefinite, because "substantially" is a subjective
    term of degree that could have multiple reasonable interpretations to a person of skill in the art.
    Gov't PHMB at 33. And, there is no evidence to support a finding that the term "substantially
    arrested" is definite. Gov't PI !MB at 34. Specifically, "substantially arrested," as used in the
    specification, could require either sufficient braking force to "stop the aircraft at or very near the
    point where the hook intercepts the arrestment line" or keep the aircraft from "slid[ing) all the way
    off the arrcstment line." Gov't PHMB at 33. Therefore, the term "substantially arrested"
    inherently is ambiguous. Gov't PHMB at 33.
    Boeing notes that "substantially arrested" was added years after the original patent
    application was fi led in 2000 and is "precisely the gamesmanship that the Supreme Court has
    endeavored to eliminate with Nautilus." Boeing PI-IMB at 37-38 (citing 7/27/1 5 TR 389: 16-19).
    AATI counters that the term "substantially" is permitted in patent claims. AATI Resp. at
    37 (citing Deering Precision Instruments, L.L. C. v. Vector Distribution Sys., Inc., 
    347 F.3d 1314
    ,
    1322-23 (Fed. Cir. 2003) (recognizing that "substantially" has been held to be a tenn of
    approximation or a tenn of magnitude, depending on context). Therefore, a skilled artisan would
    know that "substantially" is a term of approximation, "encompassing circumstances when the
    motion of the aircraft is completely arrested," as well as those "when it has been arrested enough
    so that the aircraft can be considered retrieved - that is, essentially arrested." AA.TI Resp. at 38
    (citing Cumming Deel.~ 91).
    b.      The Court's Ruling
    In determining whether a term is definite, the court must consider clarity, but also
    recognize that absolute precision is unattainable. See 
    Nautilus, 134 S. Ct. at 2129
    ("The
    definiteness requirement . . . mandates clarity, while recognizing that absolute precision is
    unattainable."). The quantum of clarity and precision necessary depends on how a person of skill
    in the art would understand the scope of the invention, in light of the term's use in the context of
    the specification. See 
    Nautilus, 783 F.3d at 1377
    (remand) ("Claim language employing terms of
    degree has long been found definite where it provided enough certainty to one of skill in the art
    when read in the context of the invention.").
    The term "substantially" is one of approximation. See Apple Inc. v. Samsung Elecs. Co.,
    Ltd., 
    786 F.3d 983
    , 1003 (Fed. Cir. 2015). In Apple, our appellate court held that the term
    "substantially centered" was definite, where evidence was presented to show that a skilled artisan
    L6
    would interpret "substantially centered" as "essentially centered except for a marginal spacing to
    accommodate ancillary graphical user interface elements." 
    Id. (emphasis added).
    In light of the purpose of the invention, as described in the specification, i.e. , to capture an
    unmanned aircraft, a person of skill in the art would be reasonably certain about the meaning of
    "substantially arrested." Cumming Deel. ~J 91.
    For these reasons, the court has determined that " substantially arrested" is not indefinite.
    4.      Claim 30: ''Sufficient Amount"
    Claim Language: "an inner throat smaller than the diameter of the line so as to generate a
    sufficient amount of braking force"
    The Par ties Asserting Indefiniteness: Government & Boeing
    The Court's Ruling: Not Indefinite
    a.      The Parties' Arguments
    The Govenunent argues that "sufficient amount" is dependent on the meaning of another
    ambiguous term - ''substantially arrested" - and is indefinite. Gov't PHMB at 33 . The dictionary
    definition of "sufficient" is "enough to meet the needs of a situation or a proposed end." Gov't
    PHMB at 33 (citing Sufficient Definition, Merriam-Webster Online Dictionary, www.merriam-
    wcbster.com/dictionary/sufficient (last visited Mar. 25, 2014). Because "substantially arrested" is
    ambiguous, a person of skill in the art would not understand the meaning of "sufficient amount,"
    as used in claim 30 of the '137 patent. Gov't PHMB at 33.
    Boeing posits three additional arguments that "sufficient amount" is indefinite. First, there
    is no accepted definition of the term "sufficient amount" in the relevant art, nor did AATI suggest
    otherwise. Boeing PHMB at 40. Second, the term "sufficient amount" is only used once in the
    specification of the contested patents, but provides no further guidance. Boeing PHMB at 40.
    Third, "sufficient amount" is dependent on the meaning of "substantially arrested," which adds to
    the ambiguity of "sufficient amount," creating "an ambiguity upon a separate ambiguity." Boeing
    PHMB at 41.
    AATI counters that no construction is needed for the term "sufficient amount," because a
    skilled artisan would understand that the plain and ordinary meaning means " enough braking force
    to prevent slidjng of the line though the hook." AATI Resp. at 37 (citing Cumming Deel.~ 90 and
    Merriam-Webster at A 7-7 (defining "sufficient" as "enough to meet the needs of a situation or a
    proposed end.")).
    b.      The Court's Ruling
    When a " word of degree" is used, the trial court must determine whether the patent provides
    "some standard for measuring that degree." 
    Nautilus, 783 F.3d at 1378
    (remand); see also Interval
    Ucensing, 766 f .3d at 1370 ("Claim language employing terms of degree has Jong been found
    definite where it provided enough certainty to one of skill in the art when read in the context of
    the invention."). The court, however, should not impose a level of precision that exceeds the
    definiteness required of valid patents. See 
    Apple, 786 F.3d at 1002
    ("Samsung's complaint about
    17
    a lack of an "objective standard [of] measure" is seeking a level of precision that exceeds the
    definiteness required of valid patents."). Again, as the United States Supreme Court held, "[t]he
    definiteness requirement . . . mandates clarity, while recognizing that absolute precision is
    unattainable." 
    Nautilus, 134 S. Ct. at 2129
    .
    "Substantially arrested" and "sunicient amount" are interrelated terms. Claim 30 of the
    '137 patent provides a "standard for measuring" the term "sufficient amotUlt" with reasonable
    certainty, as it describes the amount of braking force necessary to effectuate the "substantial"
    arrestment" of a line in the hook of a flying object. '137 patent, claim 30. In light of the purpose
    of the invention, as described in the specification, i.e., to capture an unmanned aircraft, a person
    of skill in the art would be reasonably certain of the meaning of "sufficient amount."
    For these reasons, the court has determined that "sufficient amount," is not indefinite.
    C.        United States Patent No. 8,167,242
    1.        Claim 1: "The Flexible Support Structure Being Constructed"
    Claim Language: ''the flexible support structure being co11structed8 to absorb energy by
    bending without breaking.''
    The Party Asserting Indefiniteness: Boeing
    The Court's Ruling: Not Indefinite
    a.    The Parties' Arguments
    AATI and the Government accept the court's construction of"flexiblc'' to mean "the ability
    to be repeated! y bent and still maintain its original shape afterward." 4/8/14 TR 3 81 :6-13. Boeing,
    however, argues the term "flexible" and phrase "flexible support structure being constructed to
    absorb energy by bending without breaking," is ambiguous and indefinite, because they are
    subj ecti vc and undefined. 13 oeing PHMB at 41-4 3. Boeing faults AATI for failin g to provide
    specific examples of materials that AATI regards as appropriately "flexible" to construct the
    support structme. Boeing PHMB at 42. Boeing also contends that it is "unclear" how "bending
    without breaking" differs from "flexible" and "adds additional ambiguity to the claim language."
    Boeing PHMB at 43. As to the phrase, "bending without breaking," Boeing argues that "breaking"
    is amenable to several interpretations, e.g., " bend so much that it may stop functioning yet still is
    not broken," or " not ftUlctioning any longer," or "bending but not to the point of breaking into
    pieces.'' Boeing PHMB at 43. Therefore, AATl's use of this ambiguous phrase, " flexible support
    being constructed to absorb energy by bending without breaking," renders the claim indefinite.
    Boeing PIIMB at 43.
    AATI responds by citing to two poles munbered "78" in Figure 21 of the '306 patent, which
    the specification describes as "flexible supporting posts" that can "bend without breaking." '306
    patent, col. 17:37-39. The nature of these "flexible supporting posts" is further clarified by the
    8 /\ATl agrees with the Government that "designed or intended" are synonyms for
    "constructed." JBR at 131.
    18
    '306 patent's prosecution history, citing the specific example of "large plastic PVC pipes that
    flexed dramatically during arrestments, providing a large amount of shock absorption and energy
    absorbing capability." AATf Resp. at A3-25. AATI also relies on "this Circuit's technical
    dictionary," which defines "flexible" as, «having the property to be able to be repeatedly bent and
    still maintain [its] original shape afterwards." AATI Resp . at 52 (citing D ICTIONARY OF S CIENCE
    & TECHNOLOGY 846 (1992)). Therefore, AATI contends that the combination of intrinsic and
    extrinsic evidence allows the skilled artisan to "readily widcrstand that the disputed term has its
    plain and ordinary meaning," since "the support structure can undergo a certain amount of elastic
    deformation (given the anticipated load during use) and return lo its original shape." AATI Resp.
    at 52.
    b.      The Court's Ruling
    The United States Comt of Appeals for the Federal Circuit has held that claim language
    that uses a word of degree is definite, if the term "provide[s] enough certainty to one of skill in the
    art when read in the context of the invention." Interval 
    Licensing, 766 P.3d at 13
    70. For terms of
    degree, "specific and unequivocal examples may be sufficient to provide a skilled artisan with
    clear notice of what is claimed." DDR 
    Holdings, 773 F.3d at 1260
    .
    With respect to "flexible support structure," the example that AATl offers is the "inventor's
    test rig" employing "vertical poles" that were "large plastic PVC pipes that flexed dramatically
    during arrestments, providing a large amount of shock and energy absorbing capability." AATI
    Resp. at A3-25 ('306 patent prosecution history). If the claimed invention is to "absorb energy by
    bending without breaking," the court is satisfied that disclosure of PVC, i.e., the specific material
    used in the working prototype of the device, offers "reasonable certainty" as to the scope of the
    claim to one skilled in the art.
    For these reasons, the court has determined that the term "flexible support structure" is not
    indefinite.
    2.       Claim 12:      "Inboard Point"
    Claim Language: "said leading edge of said wing is swept at least fifteen degrees at an inboard
    point on said wing."
    The Parties Asserting Indefiniteness: Government & Boeing
    The Court's Ruling: Indefinite
    a.      The Parties' Arguments
    The Government argues that the term "inboard point,, is indefinite, because this term is not
    defined in the specification or claims, nor has a general-purpose dictionary meaning. Gov't PHMB
    at 17. For example, the term "inboard point" could refer to any point on the wing, because
    "inboard" is a term that indicates a relative position with respect to the centerline of the aircraft
    and some other reference point on the airplane. Gov't PHMB at 17. The Government does not
    assert that every claim, including the phrase "inboard," is indefinite, only those where the inboard
    limitation lacks an explicit description of included points. Gov't PHMB at 18. For example,
    claims 32 and 33 of the '729 patent describe an aircraft with a capturing device, " located inboard
    19
    of the aircraft's wingtip[,)" and an aircraft with a capturing device "located inboard more than 5%
    of the wing semi-span[,)" respectively. '729 patent, col. 24:25- 26.
    Similarly Boeing argues that the term "inboard point" is unclear, because it Jacks a
    necessary point of reference and the specification docs not provide any guidance. Boeing PHMB
    at 20. Without such guidance, "every portion of, or point on, an aircraft's wing could possibly be
    an 'inboard portion' because 'inboard' only has a meaning in relation to some other fixed reference
    point." Boeing PHMB at 17. l'or example, if the outer edge of the wing tip is set as the reference
    point, then "essentially every location on the wing is closer to the centerline" and represents an
    "inboard point." Boeing PHMB at 17. lfthe court accepts AATl's proposed construction, setting
    the centerline of the wing as its reference point, half the wing would be "inboard." Boeing PH MB
    at 17.
    AATI counters that the term "inboard point" does not require a reference point, because a
    person of skill in the art would understand claim 12 of the '242 patent to require the aircraft to
    have a forward-swept or backward-swept wing with an angle of 15 degrees. AATI Resp. at 11 -
    12. This is so, because the specification explains that the purpose of the swept wings is to "more
    reliably deflect the arresting cable to the hook independent of normal aircraft yaw angles." AATI
    Resp. at 13 (citing '729 patent, col. 10:5- 6). In addition, AATf cites statements used to
    successfully traverse a rejection during prosecution that discloses "a leading edge of said lateral
    deflecting structure [that] is swept at least fifleen degrees at an inboard point on the wing (see fig
    1, shows a sweep angle of at least 15 degrees)." AATI Resp. at A3-5 (citing prosecution history
    of the '242 patent). And, Dr. Cumming testified that "[a] skilled artisan would understand that the
    swept wings recited in claim 12 of the '242 patent do not require identification of an imaginary
    point, because all points along the leading edge form the same sweep angle." Cumming Deel. if
    39.
    AATI adds that neither the Government nor Boeing has offered evidence that claim 12 of
    the '242 patent is indefinite. AATI Resp. at 14. Instead, the Government and Boeing engaged in
    "litigation-driven confusi on" and "attorney argument" to "fabricate an appearance of confusion
    about the meaning of the disputed term." AATI Resp. at 14. Moreover, the existence of "so-
    ealled" reference points in other patent's claims, provide no basis for concluding that the
    differences between the '729 patent and '242 patent "had the effect of broadening the scope of (the
    '242 patents] claims." AATI Resp. at 15.
    b.      The Court's Ruling
    As a general rule, "a patent is invalid for indefiniteness if the claims, read in light of the
    specification and the prosecution history, fai l to inform, with reasonable certainty, one skilled in
    the art about the scope of the invention." See 
    Nauliius, 134 S. Ct. at 2124
    . "(A] claim is indefinite
    if its language 'm ight mean several different things and no informed and confident choice is
    available among the contending definitions. "' Media Rights Techs., Inc. v. Capital One Fin. 
    Corp., 800 F.3d at 1366
    , 1373 (Fed. Cir. 2015) (quoting 
    Nautilus, 134 S. Ct. at 2130
    , n.8); see also
    Interval 
    licensing, 766 F.3d at 1373
    (holding that a patentee's attempt to use one of two
    embodiments that unclearly define the term '" unobtrusive manner' . . . does not provide a
    reasonably clear and exclusive definition" and "leav[es] the facially subjective claim language
    without an objective boundary" and therefore, indefinite).
    20
    As an initial matter, the parties agree that the term "inboard" means "closer or closest to
    the longitudinal axis of a ship or aircraft." JBR at 57-58. Therefore, the issue is whether claim
    12 of the '242 patent informs one skilled in the art, with "reasonable certainty," where on the wing
    the "inboard" portion is located. The specification, however, provides no reference point is for
    distinguishing an "inboard" portion from an "outboard" portion of the wing. Without a reference
    point, no informed or confident choice of location can be made. For example, if the reference
    point is the outer edge of the wing tip, every point on the wing could be an "inboard point." If the
    reference point is the lateral centerline of the wing, as AATI argues, then fully half of the wing is
    the "inboard portion." Ilecausc the specification fails to provide an informed or confident choice
    as to where the "inboard" portion of the wing is located, in relation to any number of reference
    points, such as the wingtip, the lateral centerline of the wing, or any other potential reference point,
    claim 12 fails to inform one of skill in the art, with "reasonable certainty," about the scope of the
    invention.
    For these reasons, the court has determined that the term "inboard point" is indefinite.
    D.         United States Patent No. 8,517 ,306
    1.       Claim 1: Elastic Deformation •.. Absorbs Most Of Energy
    C la im Language: ''the capturing apparatus being so constructed and prop01tioned that elastic
    deformation of components of the capturing apparatus absorbs most of tlte energy during
    aiTestment of the forward vetoci ty of the aircraft"
    The Pa r ty Asserting Indefiniteness: Boeing
    The Court's Ruling: Not Indefinite
    a.     The Parties' Arguments
    Boeing argues that "the AATI patents do not provide any definition of what is meant by
    'elastic deformation,"' because «[t]he term 'elastic deformation' is unclear as used in claim l of
    the '306 patent ... [and] can have any number of meanings with respect to the degree of elasticity
    involved." Boeing PHMB at 44. Boeing adds that "elastic defom1ation" could refer to the
    elasticity of the arrestment lines, meaning "that the energy is absorbed by ... the arrestment lines,
    rather than purported 'flexible supporting posts."' Boeing PHMB at44; but see 10/29/15 TR 8: 12-
    13 (Iloeing defining "elastic deformation" to mean "capable ofregaining its prcstressed state.").
    Boeing also faults AATI for failing to "provide any insight into which materials can be
    used as the components to satisfy the 'elastic deformation' limitation." Boeing PHMB at 44.
    Boeing emphasizes that "[a] wide range of materials may be considered 'elastic,"' arguing that
    "the AATI patents could have provided some guidance as to what is meant by 'elastic' by
    employing HOOKE'S LA w, a well-known formu la that governs elastic deformation ... [and] set
    forth the range of acceptable values of YoUNG's MODULUS of their invention .... They did not."
    Boeing PHMB at 44-45 .
    And, "it is unclear what is meant by 'absorbs most of the energy during arrestment,"'
    because AA TI failed to explain ( l) whether the energy is absorbed permanently or temporarily
    during arrestment, and (2) how to measure whether a particular device has in fact "absorb[ed] most
    21
    of the energy during arrcstment." Boeing PH.MB at 45 ("Depending on how one were to measure
    the absorption of energy, one could obtain differing results, which would not enable a person of
    ordinary skill in the art to reasonably know the scope of the claims.'') (citations omitted).
    AATI counters that "the intrinsic and extrinsic evidence shows that the plain and ordinary
    meaning controls." AATI Resp. at 55, 57. A skilled artisan would not be confused, because
    "'elastic deformation' has a well·understood meaning similar to flexible, i.e., "a temporary
    deformation in a solid material that has been subjected to a load, wherein the material returns to
    its original shape after the load is removed." AATI Resp. at 55 (citing the definition of "flexible"
    in D ICTIONARY or ScJ. & TBCH. 718 ( 1992)). In addition, as a matter of common sense, the phrase
    "absorbs most of the energy" means "more than halI'' or "a majority," so that a skilled artisan
    would understand that the "capturing apparatus can absorb most the aircraft's kinetic energy from
    its motion during arrestmcnt via elastic deformation." AATl Resp. at 56.
    AATI also argues that "[t]he intrinsic evidence supports a plain reading of the disputed
    term." AATI Resp. at 56. Specifically, the different embodiments disclosed in the specification
    utilize the elastic characteristics of the lines and the flexible support structure. AATI Resp. at 56.
    Moreover, " the Examiner had no problems understanding the term during prosecution. " AATI
    Resp. at 56 (referencing AATI Resp. at A3-9 1).
    Jn response to Boeing's argument that "elastic deformation" is unclear, with respect to the
    degree of elasticity involved, AATI argues that .. ft] here is no clear and convincing evidence that a
    skilled artisan would be confused" and Boeing is wrong in "demanding mathematical accuracy
    even though the relevant case law has made it abundantly clear that such precision is not required."
    AATI Resp. at 57. Patent applicants have no duty to provide explicit definitions of all claim
    terminology and "filn the absence of definitions, the plain and ordinary meaning controls." AATI
    Resp. at 57.
    As to Boeing's criticism that the patent fails to specify the materials used to satisfy the
    "elastic deformation" limitation, AATf responds that a skilled artisan would know the materials
    used in typical aviation applications and " the inventors did disclose an example of what materials
    satisfy the disputed limitation." AATl Resp. at 58 (referencing AATI Resp. at A3-25) ("On the
    inventor's test rig, the vertical poles were large plastic PVC pipes that flexed dramatically during
    arrestments, providing a large amount of shock and energy absorbing capability."). In other words,
    Roeing is "confusLing l claim clarity with claim breadth" by "rattling off a list of possible
    alternative recitations," such as employing HOOKE'S LA w to define "elastic deformation." AATf
    Resp. at 58. In fact, the inventors stated that "their invention was not necessarily limited by
    structures that follow IIOOKE's LAW." AATI Resp. at 58 (referencing '306 patent prosecution
    history at AATI Resp. at A3-85). Therefore, a "skilled artisan [would] understand what is meant
    by elastic deformation without having it explained in tenns of YOUNG'S MODULUS," particularly
    when "the intrinsic evidence discloses examples of suitable materials." AATI Resp. at 59.
    Last, in response to Boeing's argument about the phrase "most of the energy," AATI states
    that a skilled artisan would not be concerned with whether the energy is absorbed permanently or
    temporarily or how to measure the energy. AATl Resp. at 59. The "risk of ' differing results'
    would not be a concern, because the claim term docs not require a specific measurement within a
    narrow range-just confirmation of 'a majority of the energy' was absorbed." AATI Resp. at 59.
    22
    b.      The Court's Ruling
    The claim language, the specification, and prosecution history support a plain and ordinary
    meaning of the term "elastic deformation," referring both to the arrestment line and the fl exible
    support structure. '306 patent, claim l(c) and l(d); see also '306 patent, col. 7:31-32. The
    different embod iments disclosed in the specification suggest that the ordinary meaning of "elastic
    deformation" describe the elastic characteristics both of the line and the support structure. '306
    patent, col. 17:37-40 ("The energy absorbing mechanisms for this deck mounted system are
    flexible supporting posts 78 which can bend without breaking and the elasticity inherent in the
    lines 74, 76."); see also '306 patent, col. 7:31- 32 ("[T)he arrcstment energy is absorbed primarily
    by deflecting the tow line to the side."); see also '306 patent, col. 13:23- 25 ("[A] sliding
    attachment which is designed to ... absorb any kinetic energy parallel to the direction of travel of
    the tow line 4."). Moreover, during prosecution, the Examiner understood that "elastic
    deformation" refors to both the arrestment line and the flexible support structure. AATI Resp. at
    A3-9 l ("[EJlastic deformation of components ... appears broad enough to encompass material
    characteristics of the lines and support structure that arc considered to be elastic to some degree
    and wi ll deform to some degree."). Although the claim fails to specify that elastic defonnation of
    "all" components of the capturing apparatus absorbs most of the energy, the claim teaches that the
    capturing apparatus includes both an arrestment line and a flexible support structure. '306 patent,
    claim l(c) and l(d).
    Boeing incorrectly suggests that AATr must define "elastic deformation," based on
    ifOOKE's LAW, and provide a range of acceptable YOUNG' S MODULUS values. Boeing PHMB at
    44. It is well established that a patentee "need not define his invention with mathematical precision
    in order to comply with the definiteness requirement." Oakley, Inc. v. Sunglass Hut Int'!, 
    316 F.3d 1331
    , 1341 (Fed. Cir. 2003); see also In re Packard, 
    751 F.3d 1307
    , 1313 (Fed. Cir. 2014) cert.
    denied sub nom. Packard v. Lee, 
    135 S. Ct. 2310
    , 191 L. Ed. 2d 978(2015) ("The [indefiniteness]
    requirement is not a demand for unreasonable precision. The requirement, applied to the real world
    of modern technology, does not contemplate in every case a verbal precision of the kind found in
    mathematics."). In any event, in this case, the degree of elasticity and different phases of elastic
    deformation are not of concern. All that matters is the ability of the flexible support structure to
    maintain an elastic deformation i.e., bending without breaking and returning to the original shape
    after stress is removed. Unlike other terms that require measurement, there is an "elastic limit" to
    the "elastic deformation" of a material, beyond which "permanent defonnation will occur."
    COLLINS ENGLISH D ICTIONARY; see also TH.t:: AMERICAN HERITAGE SCIENCE DICTIONARY ("The
    stress point at which a material, if subjected to higher stress, will no longer return to its original
    shape.). Therefore, it would be reasonably clear to one skilled in the art that a flexible support
    structure should be made of materials that can maintain the elastic deformation during the
    capturing process to absorb most of the kinetic energy from the aircraft being captured. 10/29/15
    TR 12:9-12.
    Boeing also incotTcctly contends that AATI's failure to specify the type of suitable
    materials renders the term indefinite, because a wide range of materials may be considered elastic.
    Boeing PHMB at 44. During prosecution, AATI disclosed an example of suitable material that
    would allow "elastic defonnation to absorb most of the energy." AATI Resp. at A3-25 (citing
    '306 patent prosecution history that " [oJn t he inventor' s test rig, the vertical poles were large
    plastic PVC pipes that flexed dramatically dw-ing an-cstments, providing a large amount of shock
    23
    and energy absorbing capability."). The reference to " large plastic PVC pipes that flex
    dramatically," provides "a large amolll1t of shock and energy absorbing capability" and would
    inform a skilled artisan with reasonable certainty about potential suitable materials and afford the
    public with notice about the scope of the claimed invention.
    Moreover, the phrase "most of energy" is one of degree that does not require mathematical
    precision. See 
    Oakley, 316 F.3d at 134
    l ("[A] patentee need not define his invention with
    mathematical precision in order to comply with the definiteness requirement."). When a "word of
    degree" is used, the court must determine whether the patent provides "some standard for
    measuring that degree." 
    Nautilus, 783 F.3d at 1378
    (remand). That standard is the purpose of the
    invention-to capture a UA V. Moreover, this is not a case that requires the inventors to identify
    a specific method of measurement. See Dow Chem. Co. v. Nova Chemicals Corp. (Canada) , 
    803 F.3d 620
    , 634 (fed. Cir. 2015) ("Because the methods do not always produce the same results, the
    method chosen for calculating the slope of strain hardening could affect whether or not a given
    product infringes the claims."). J.nstead, here, the degree of elasticity is not relevant.
    With respect to the extrinsic evidence, AATI cites a dictionary definition for "elastic
    deformation" as "a temporary deformation in a solid material that has been subjected to a load,
    wherein the material returns to its original shape after the load is removed." AATI Resp. at 55
    (citing DICTIONARY OF SCI. &TECH. 718 (1992)).
    Finally, Boeing's expert, Dr. R. John Hansman, opines that the term "elastic" is unclear:
    "[dl epending on one's definition of 'elastic,' one of ordinary skill in the art would consider a
    variety of materials, some of which may or may not be 'elastic' as used in the patent. For instance,
    materials such as concrete, rubber, steel, and iron can all be considered to have some elastic
    properties to some degree or another." Hansman Deel.~ 121. Dr. llansman's focus, however,
    was on the abstract meaning of the word "elastic," rather than on the meaning of "elastic
    deformation" and "most of the energy" in the context of the patent. In the light of the claim
    language, the specification, the prosecution history, and the plain and ordinary meanings of"elastic
    deformation" and "most of the energy," these terms would provide one ski lled in the art with
    "reasonable certainty" about the scope of the invention.
    For these reasons, the court has determined that the term "elastic deformation" and
    "absorbs most of the energy" are not indefinite.
    2.      Claim 21: "Being Designed To Deflect"
    Claim Language: "the a:tTestment line being designed to deflect when contacted by said
    aircraft"
    The Party Asser ting Indefiniteness: Boeing
    The Court' s Ruling: Indefinite
    a.     The Parties' Arguments
    Boeing argues that the phrase "being designed to deflect" is vague and indefinite, because
    it describes a particular type of structure based on an intended purpose, but the patent docs not
    explain how one skilled in the art can achieve the intended purpose. Boeing PHMB at 31. If,
    "bei ng designed to deflect" simply means "designed to change direction"-as the Government and
    24
    AATI contend-then the limitation is meaningless, because as a matter of physics, every structure
    that hits an arrestment line necessarily will change its direction. Boeing PHMB at 31-32. And,
    there is no art-recognized definition of "being designed to deflect.', Boeing PHMB at 32.
    AATI agrees with the Govenunent that the proper construction of "deflect" is its dictionary
    definition, i.e., "to cause (something that is moving) to change direction." AATI Resp. at 45-46.
    Moreover, this term is not an expression of an intended purpose, as Boeing contends, but is instead
    permissible functional language. AATI Resp. at 46. AATI adds that a skilled artisan would
    understand the plain and ordinary meaning of "being designed to deflect" and that a specific "art
    recognized definition" is not required. AATI Resp. at 46.
    b.     The Court's Ruling
    Indefiniteness concerns whether functional language in a claim provides ''a clear-cut
    indication of the scope of the subject matter embraced by the claim." In re Swinehart, 
    439 F.2d 2
    10, 2 13 (C.C.P .A. 1971 ). "A patent applicant is free to recite features of an apparatus either
    structurally or functionally." In re Schreiber, 
    128 F.3d 1473
    , 1478 (Fed. Cir. 1997). But when
    claims recite a description of a problem to be solved or a function or result to be achieved by the
    invention, the boundaries of the claim scope must be clear. See 
    Halliburton, 514 F.3d at 1255
    - 56
    (holding that "fragile gels" was indefinite, because the term was functional and was ambiguous as
    to the requisite degree of the fragileness of the gel); but see Application ofBarr, 
    444 F.2d 588
    , 595
    (C.C.P.A. 1971) (holding that "incapable of forming a dye with said oxidizing development
    agent," although functional, was acceptable, because it set definite boundaries on the patent
    protecti on sought); see also Application of Venezia, 
    530 F.2d 956
    , 957 (C.C.P.A. 1976) (holding
    that limitations such as "members adapted to be positioned" and "portions ... being resiliently
    dilatablc whereby said housing may be slidably positioned" serve to precisely define present
    structural attributes of interrelated component parts of the claimed assembly).
    AATI argues that "[a] skilled artisan would have recognized that, within the scope of this
    invention, the line must deflect suilieiently to capture the aircraft ... [so] he would select
    parameters such as length, tension, and diameter of the line suitable for the purpose of the
    invention- capturing a UA V." AATI Resp. at 46. The specification, however, does not provide
    any guidance of acceptable ranges to establish parameters, nor teach how such ranges could be
    determined. AATf provided no expert testimony nor other evidence to show how a person skilled
    in the art would be reasonably certain of acceptable ranges. Similar to Hallibruton, where the U.S.
    Court of Appeals for the Federal Circuit held "fragile gels" to be indefinite, because the requisite
    degree of fragilcncss was ambiguous, in claim 21 the requisite degree of acceptable deflection is
    unknown.
    For these reasons, the court has determined that the term "being designed to deflect" is
    indefinite.
    25
    3.      Claims 1/21: "Generally Vertical" I "Generally Perpendicular"
    Claim Language:
    •   "supporting the anestment line across a flight path of the aircraft in a generally vertical
    orientation"
    •   "the arrestment line being suspended at its upper end by said support structure across a
    flight path of the aircraft in an orientation which is ge11erally perpendicular to said
    leading edge of said wing at an intended point of interception of said aircraft"
    The Party Asserting Indefiniteness: Boeing
    The Court's Ruling: Not Indefinite
    a.     The Parties' Arguments
    Boeingarguestbat"[t]heterm 'generally' renders (tenns 'generallyvertical' and 'generally
    perpcndicular' l vague and indefinite." Boeing PHMB at 33. Neither AATI' s proposed
    construction that "generally vertical means vertical or close to vertical" nor the agreed construction
    between AATI and the Government "adds [any] further certainty to the claim scope." Boeing
    PHMB at 34. Specifically>Boeing asserts that "generally vertical" and "generally perpendicular"
    do not have any art-recognized meanings nor do the AATI patents define or use these terms in the
    specification. JBR at 109, 112. Therefore, these terms are "completely subjective ... with no
    meaning that would permit a party to determine whether one falls within or outside the scope of
    the claim." JBR at l 09. It is irrelevant that the word "generally" is used in claim drafting. Boeing
    PIIMB at 33. The fact is, AATI intentiona lly "injectled] ambiguity into [the] claims" and "opted
    to create an impermissible 'zone of uncertainty.,,, Boeing PHMB at 33, 34 (quoting 
    Nautilus, 134 S. Ct. at 2
    129). AATI "could have provided the necessary notice to the public" by "speciflying]
    a particular range within which purported invention worked ... [or] giv[ing] examples of variations
    which fell within or outside of the scope of 'generally vertical' or 'generally perpendicular."'
    Boeing PHMB at 34.
    AATI responds that "there is ample support in the intrinsic evidence for a skilled artisan to
    understand the term 'generally."' AATI Resp. at 47, 49. "[T]he plain and ordinary meaning to a
    person of ordinary skill in the art must control," because "[t)he applicant did not act as his own
    lexicographer with respect to [the tenns]." AATI PHMB at 47, 48. Moreover, the specification
    supports a plain and ordinary meaning of "generally." AATI Resp. at 48 (referencing the non-
    perfectly vertical and horizontal lines in Figures 5 and 21 of the patent). In addition, "[t]he
    prosecution history of the '306 patent provides further support [that] ... (t]he Examiner had no
    confusion- he knew what 'generally' meant and used it himself.» AATI Resp. at 48 (referencing
    AATI Resp. at A3 -107 (citing the Examiner' s notes that the U.S. Patent No. 2,552,115 reference,
    "discloses at least one 'generally' verticall y down slanted line (fig 1) ... 'generally' perpendicular
    to said leading edge at an intended point of interception")).
    Finally, AATT faults Boeing for "attempt[ing] to impose unrealistically rigid standards [by
    requiring absolute mathematical precision]" and opposes Boeing's suggestion that "terms of
    degree (li ke 'generally') arc inherently indefinite without precise numerical boundaries," arguing
    26
    that " Boeing's arguments run afoul of controlling precedent." AATI Resp. at 49, 50 (citations
    omitted). It is well known, "' [g]enerally' is a term used in claiming to avoid mathematical
    exactness," JBR at 108, 11 l, and "a skilled artisan would understand 'generally' as a term of
    approximation [that simply means 'close to' ]." AATI Resp. at 48, 49 (citing Cumming Deel.~
    80). Therefore, "[a]fter reviewing the intrinsic evidence, a skilled artisan would understand that
    the claims recite the objective of having the wing perpendicular to a vertical arrestment line ....
    He would also understand, however, that achieving a perfect 90-degree angle between the line and
    wing would not be feasible." AAT1 Resp. at 48, 49 (citing Cumming Deel. ii 80).
    b.     The Court's Ruling
    AATI and Boeing appear to agree that AATf 's patents do not define nor give any special
    meaning to the terms "generally vertical" and "generally perpendicular. " AATI PHMB at 47, 48
    (AATI stating that "l tjhc applicant did not act as his own lexicographer."); see also Boeing PHMB
    at 35 (Boeing arguing that "absent any guidance or explanation . .. the terms ' generally vertical'
    and 'generally perpendicular' are vague and ambiguous"). Therefore, the plain and ordinary
    meaning to a person of skill in the art controls. See 
    InterDigital, 690 P.3d at 1324
    ("The plain
    meaning of claim language ordinarily controls unless the patentee acts as his own lexicographer
    and provides a special definition for a particular claim term or the patentee disavows the ordinary
    scope of a claim term either in the specifi cation or during prosecution.").
    The United States Court of Appeals for the Federal Circuit has held that the term
    ''substantially centered" was definite in the light of an example disclosed in the specification
    illustrating the meaning and usage of "substantially." See 
    Apple, 786 F.3d at 1003
    . Similarly, in
    this case, the non-perfectly vertical and horizontal lines in Figures 5 and 21 of the '306 patent
    reasonably illustrate the meaning and usage of "generally vertical" and "generally perpendicular."
    Therefore, a skilled artisan would not be confused about the scope of the claim. See interval
    
    Licensing, 766 F.3d at 1370
    ("Claim language employing terms of degree has long been found
    defi nite where it provided enough certainty to one of skill in the art when read in the context of
    the invention."); see also Georgia-Pac. Corp. v. U.S. Plywood Corp., 
    258 F.2d 124
    , 136 (2d Cir.
    1958) ("If the claims, read in the light of the specifications, reasonably apprise those skilled in the
    art both of the utilization and scope of the invention, and if the language is as precise as the subject
    matter permits, the courts can demand no more.").
    In addition, the terms "generally vertical" and "generally perpendicular" are as precise as
    the subject matter requires. For example, the specifi cation discloses the objective of having the
    wing perpendicular to a vertical arrestmcnt line. '306 patent, col. 9:44-46 ("the wings at a
    favo rable more perpendicular angle to the tow line 4 fo r the largest capture envelope"); see also
    ' 306 patent, col. 11:14- 18 ("Arrestments can be made with the vehicle intersecting the tow line 4
    or secondary arrestment lines 20, 21 approximately perpendicular (which is the preferred
    approach) or approximately parallel or somewhere in between."). The phrases "approximately
    perpendicular," "favorable more perpendicular," and "generally perpendicular," are used
    interchangeably to inform a skilled artisan that achieving a perfect 90-degrcc angle between the
    line and the wing is not intended.
    Moreover, Boeing offered no evidence that a skilled ru1isan would find these terms lacking
    reasonable certainty. The Examiner was not confused and used the terms during prosecution.
    27
    AATl Resp. at A3-l 07 (the Examiner arguing that the U.S. Patent No. 2,552, 115 reference,
    "discloses at least one 'generally' vertically down slanted line (fig 1) ... 'generally' perpendicular
    to said leading edge at an intended point of interception. Moreover, "words of approximation,
    such as "generally" and "substantially," arc descriptive terms commonly used in patent claims to
    avoid a strict nwnerical boundary to the specified parameter." See Anchor Wall Sys., Inc. v.
    Rockwood Retaining Walls, Inc., 340 f.3d 1298, 1310-11 (Fed. Cir. 2003) (internal citation and
    quotation marks omitted). Moreover, the law does not require "absolute precision," or a particular
    range in place of a word of close proximity such as ''generally." See Rosemount, Inc. v. Beckman
    Instruments, Inc., 
    727 F.2d 1540
    , 1546-47 (Fed. Cir. 1984) ("Beckman attacks the claims as
    indefinite, primarily because "close proximity" is not specifically or precisely defined. . . . [T]o
    accept Beck.man's contention would turn the construction of a patent into a mere semantic quibble
    that serves no useful purpose.") (internal citation and quotation marks omitted).
    Nevertheless, assuming, argu,endo, the claim could have been written with greater
    precision, by specifying a particular range within which the invention worked, that does not affect
    the determination of definiteness, because the test is whether these terms would inform a skilled
    artisan with reasonable certainty about the scope of the invention. Moreover, whether a 50-degree
    or 60-degree angle falls outside of the scope of "generally vertical" or "generally perpendicular,"
    is an issue of infringement, not claim indefini teness. See WL. Gore & Associates, Inc. v. Garlock,
    Inc., 
    842 F.2d 1275
    , (Fed. Cir. 1988) (holding that an "imprecise claim limitation, such as the
    phrase 'about 100% per second' does not impart invalidity to the claims, but is to be considered in
    determination of infringement).
    Finally, Boeing's expert opined that, "the term 'generally' is susceptible to multiple
    reasonable interpretations, and thus without further guidance, one of ordinary skill in the art would
    not be reasonably certain as to the meaning of' generally vertical' and 'generally perpendicular."'
    Hansman Deel.~ 79. But, Or. Hansman focused his inquiry on the abstract meaning of the word
    "generally," rather than on the meaning of claim terms within the context of the patent.
    For these reasons, the court has determined that the terms "generally vertical" and
    "gcnera!Jy perpendicular," are not indefinite.
    4.      Claims 1, 21: "Outboard Portion"
    The term "outboard portion" is discussed earlier herein.          '729, Claim 44 "Outboard
    Portion" 
    Analysis, supra
    at (IV)(A)(3).
    28
    5.      Claims 1, 21: " Reliably ... Attach/Deflect"
    Claim Language:
    • "said hook being constructed and proportioned to intercept an arrestment line and
    reliably and releasahly attach said aircraft to said arrestment line"
    • "lateral defecting structure constructed and arranged to reliably deflect the arrestment
    line''
    The Parties Asscrtine Jndefiniteness: Government & Boeing
    The Court's R ulin g: Indefinite
    a.      The Parties' Arguments
    The Government argues that "reliably" is a subjective term, amenable to multiple
    interpretations, and inherently ambiguous, because there is no intrinsic evidence that provides
    clarifying gui dance about an acceptable range of "reliability." Gov't PHM B at 29. The
    Government adds tha.t the dictionary definition that AATI proffers, i.e. , "able to be trusted to do
    or provide what is needed: able to be relied on," is equally subjective. Gov't PHMB at 30. What
    J\A TI is seeking is a construction that w ill allow it to reach devices that may not perform their
    intended function every time. Gov' t PHMB at 30.
    Boeing agrees with the Government that the term "reliably" is vague, the dictionary
    definition does nothing to resolve the ambiguity, and there is no intrinsic evidence that defines the
    term. Boeing PHMB at 30.
    AATI counters that a skilled artisan would readily appreciate that the term "reliably" allows
    for the possibility that attachment or deflection may not occur every time, but instead with
    sufficient frequency, to be expected fro m a successful retrieval system. AATI Resp. at 32-33.
    The term " reliably" appears in over four million patents and published applications and at least
    one prior com1 has been able to construe the term without confusion, even though the term had not
    previously appeared in the specification. A i\TI Resp. at 33. «Reliably" simply means that in the
    claimed system, the UA V would not bounce off the arrestmcnt line or drop off the arrestmcnt
    system. AATI Resp. at 34.
    h.      The Court's Ruling
    Claim language employing terms of degree arc definite, if the claim provides reasonable
    certainty to one of skill in the aii, when read in the context of the invention. See Interval 
    Licensing, 766 F.3d at 1370
    . When a word of degree is used, the court must determine whether the patent
    provides "some standard for measuring that degree." 
    Nautilus, 783 F.3d at 1378
    (remand).
    Specific and unequivocal examples may be sufficie nt to provide a skilled artisan with clear notice
    of what is claimed. See DDR 
    Holdings, 773 F.3d at 1260
    (citing Enzo Biochem, Inc. v. Applera
    Corp., 
    599 F.3d 1325
    , 1334-35 (Fed. Cir. 2010) (holding that the phrase "not interfering
    substantially" was definite, where the intrinsic evidence provided multiple examples that would
    allow a skilled artisan to determine whether a particular chemical bond linkage group would
    "interfer[e J substantially" with hybridization)).
    29
    The '306 patent, however, provides no guidance for ascertaining when the system performs
    "reliably" nor examples of the system preforming "reliably," as opposed to unreliably. As Boeing
    points out, the dictionary definition that AA TT provides is circular and does little to address
    ambiguity. Boeing PHMB at 30. Although AATI points to Nuance Commc 'ns inc. v. Tellme
    Networks Inc., 
    707 F. Supp. 2d
    . 472, 489 (D. Del. 2010), where a trial court construed the word
    "reliably," in that case, the defendant never challenged the term "reliable" as indefinite. More
    recently, in Bayer Intellectual Prop. GmbH v. Warner Chilcott Co., LLC, No. 12-1032-GMS, 
    2015 WL 1849015
    , at* 1- *4 (D. Del. April 2 1, 2015), the same trial court held a claim indefinite, where
    it contained words of degree such as- "high," "low," " satisfactory," and " reliable"-without more
    specificity in the intrinsic record. That is the same prob lem in this case, because the intrinsic
    record of the '306 patent provides no standards by which one skilled in the art can ascertain the
    scope of the claims with reasonable certainty.
    For these reasons, the court has dete1mined that "reliably attach" and "reliably deflect" are
    indefinite.
    6.      Claims 1, 21: " Kept Clear Of The Intended Flight Path"
    Claim Language: "said support for said anestment line being kept clear of the intended flight
    path of the aircraft"
    The Parties Asscrtine Indefiniteness: Government & Boeing
    The Court's R uling: Indefinite
    a.      The Parties' Arguments
    The Government argues that "kept clear" is a term of degree, subject to multiple reasonable
    interpretations, and is not clear as to how much separation must be present between the supporting
    structure and the " intended flight path" to meet the limitation. Gov't PHMB at 30. Tn addition,
    the claim uses a variable reference point, i.e., ''intended flight path." Gov' t PllMB at 31. Because
    there could be multiple "intended flight paths," defining the structure by reference to "intended
    flight paths" provides no meaningful guidance. Gov' t PHMB at 30- 31. A single supp01t structure
    and arrestment line configuration either could be infringing or not, based on the "intended flight
    path" and whether the arrestment line is "kept clear" of the support structure when the aircraft
    approaches from that path. Gov't PHMB at 31. The Government also points out that in a prior
    version of the '729 patent, claim 26 was more specific as it stated "suspension of the fixture is kept
    clear of said flight path by a distance greater than the height or width of said flying object." Gov't
    PHMB at 31.
    Here, however, the specification neither defines "kept clear" nor provides examples to
    show a configuration that is "kept clear" and one that is not "kept clear." Boeing adds that it is
    unaware of any art-recognized definition of "kept clear." Boeing PHMB at 35.
    AATl counters that no construction is needed for the phrase "kept clear" of the "intended
    fli ght path," because both terms have a plain and ordinary meaning. AATI Resp. at 36. Based on
    the dictionary definition of "clear"- " free from entanglement or contact"- in the context of the
    invention, "kept clear" simply means that the support for the arrestment line is maintained ("kept")
    free from contact ("clear") with the aircraft. AATI Resp. at 3 6. AATl also argues that 'Ilalliburton, 514 F.3d at 1255
    . In this case, because the
    structure depends on an unknown "intended flight path" elected by the pilot, the patent fails to
    inform the scope of the invention. In addition, the '306 patent does not provide a "standard for
    measuring [the] degree" of clearance required. See 
    Nautilus, 783 F.3d at 1378
    (remand).
    Por these reasons, the court has determined that the term "kept clear" is indefinite.
    V.     CONCLUSION
    For the reasons discussed herein, the court has made the following rulings about the
    indefini teness of certain disputed claim terms of U.S. Patent No. 6,874,729, U.S. Patent No.
    7,097,137, U.S. Patent No. 8,167,242, and U.S. Patent No. 8,517,306.
    31
    Patent        Claim              Claim Term             Indefiniteness
    Number       Number(s)                                   Determination
    6,874,729         s                 "Sensor"              Not Indefinite
    5            "Near The Point Of          Indefinite
    Engagement"
    44            "Outboard Portion"          Indefinite
    7,09,7,137      1, 20         "Relcasably Secure"         Not Indefinite
    9, 19       "Smooth Continuation"         Not Indefinite
    30         "Substantially Arrested"      Not Indefinite
    30           "Sufficient Amount"         Not Indefinite
    8,167,242          l         "The Flexible Support        Not Indefinite
    Structure Being Constructed"
    12        "An Inboard Point on Said        Indefinite
    Wing"
    8,517,306         1         "Elastic Deformation Of       Not Indefinite
    Components ... Absorbs Most
    Of The Energy During
    Arrcstment"
    21      "Being Designed To Deflect"       Indefinite
    1/2 1         "Generally Vertical"/       Not Indefinite
    "Generally Perpendicular"
    1, 21     "Outboard Portion" (refer to      Indefinite
    '729, Claim 44 analysis)
    1, 21      "Reliably And Releasably         Indefinite
    Attach"
    1, 21        "Said Support For Said         Indefinite
    Arrestmcnt Line Being Kept
    Clear"
    IT JS SO ORDERED.
    s/Susan G. Braden
    SUSAN G. BRADEN
    Judge
    32