Court Opinion

ID: 3157874
Source: CourtListenerOpinion
Date Created: 2015-11-25 13:01:58.059576+00
Date Added: 2024-06-11T12:47:13.630845
License: Public Domain

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        Although In re Uusi is not precedential, the reasoning therein is persuasive and the court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.").

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        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

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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.

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          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.~

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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