Lyon v. Boeing Co.

438 F. Supp. 345, 193 U.S.P.Q. (BNA) 310, 1975 U.S. Dist. LEXIS 15004
CourtDistrict Court, W.D. Washington
DecidedDecember 4, 1975
DocketCiv. A. No. 119-73C2
StatusPublished
Cited by2 cases

This text of 438 F. Supp. 345 (Lyon v. Boeing Co.) is published on Counsel Stack Legal Research, covering District Court, W.D. Washington primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Lyon v. Boeing Co., 438 F. Supp. 345, 193 U.S.P.Q. (BNA) 310, 1975 U.S. Dist. LEXIS 15004 (W.D. Wash. 1975).

Opinion

ORDER GRANTING DEFENDANT’S MOTION FOR SUMMARY JUDGMENT

MORELL E. SHARP, District Judge.

This is a patent infringement action alleging that defendant is infringing certain claims of plaintiff’s patents 3,127,130 and 3,076,623, hereinafter ’130 and ’623. In 1963 and 1964, plaintiff was issued patents for inventions of a variable shaped airfoil, patent ’623, and a wing and flap system, patent ’130 (see exhibits G and F, respectively). Plaintiff alleges that defendant’s leading edge flap on the Boeing 747 (see [346]*346exhibit E) infringes plaintiffs claims 1, 2, 3 and 6 of patent ’623, and that defendant’s wing and flap system on the Boeing 747 (see exhibit E) infringes plaintiff’s claim 10 of patent ’130. Defendant now moves for summary judgment, claiming noninfringement and invalidity of plaintiff’s patent claims.

Infringement of Patents ’ISO and ’623 Claims

“Noninfringement as a matter of law may be decided upon a motion for summary judgment when there is no genuine issue of material fact, and when it is possible to understand without extrinsic expert evidence the nature of the patented invention, and to determine that the alleged infringing device does not contain all the elements set forth in the patent claim . . . .” Graphicana Corp. v. Baia Corp., 472 F.2d 1202 (6th Cir. 1973); Engelhard Industries Inc. v. Research Instrumental Corp., 324 F.2d 347 (9th Cir. 1963). In order to constitute infringement, there must exist a substantial identity of means, function and result. Pursche v. Atlas Scraper and Engineering Co., 300 F.2d 467 (9th Cir. 1962). In the instant case, there is no substantial identity of means, function or result between either the Boeing wing and flap system and plaintiff’s claim 10 of patent ’130, or the Boeing leading edge flap and plaintiff’s claims 1, 2, 3 and 6 of patent ’623.

Patent '130

By mere observation it is obvious that the means employed by Boeing is not equivalent to that used by plaintiff in the ’130 patent claim. In ’130, the two flaps are stowed in and deployed from intermediate positions along the bottom of the wing (see exhibit F). The flaps of the Boeing system, however, are stored much differently, i. e. the front flap is stored in the front of the wing and the rear flap is actually the trailing edge of the wing, which is merely dropped rearward when deployed (see exhibit E).

Second, it is clear that the two systems have different functions. The function of the ’130 flaps when deployed is to direct air along the underside of the wing and against the rear flap in a more efficient manner (see exhibit F). The Boeing system, however, functions to divide the airstream at the leading edge flap, directing one flow over the wing’s upper surface, and the other along the lower surface of the leading edge flap in such a way that a portion of the latter airstream passes through a gap between the leading edge flap and the main wing and then over the top of the wing, while the remaining air which was directed under the leading edge flap continues along the underside of the main wing (see figure 12 at page 31 of defendant’s noninfringement brief).

Finally, the results achieved by the Boeing system are not equivalent to those of plaintiff’s ’130 system. In the ’130 claim, plaintiff stated that conventional flapped wings had “the inherent quality of increasing the moment of pitch of the wing. In other words, it tends to cause the nose of the aircraft to pitch downwardly and this is ordinarily overcome by elevator controls.” (see exhibit B, patent ’130, column 1, lines 25-29.) The main object of plaintiff’s invention was “to provide a new type of flap which will not change the pitching characteristics or moment of pitch of an aircraft when in operation.” (see exhibit B, patent ’130, column 1, lines 29-32.) Defendant argues, however, that the Boeing flap system has little effect on the moment of pitch caused by deployment of the trailing edge flap (see Dorn affidavit at page 5). Instead, the Boeing system is intended to increase the area of the wing by 28%, to direct an airstream over the upper surface of the wing near its leading edge to prevent stall during low speed flight at a high angle of attack and generally to increase the lift of the wing by 90% (see Dorn affidavit at page 8).

Other than flatly stating that the means, function and result of the two systems are equivalent and that a genuine issue of material fact exists as to the similarity of the two systems, plaintiff does not attempt to dispute the differences which defendant [347]*347points out by affidavit and exhibits. A mere statement that an “issue exists” does not prevent the granting of summary judgment. Henderson v. A. C. Spark Plug Division of GMC, 366 F.2d 389 (9th Cir. 1966). Based on observation and study, the Court finds that the Boeing flap and wing system does not infringe upon claim 10 of plaintiff’s patent ’130.

Patent ’623

As with patent ’130, it is possible with ’623 to determine by observation if Boeing’s leading edge flap is substantially equivalent to plaintiff’s device (the variable shaped airfoil, exhibit G). First, the means employed in Boeing’s leading edge flap is not equivalent to that employed in plaintiff’s patent ’623. A comparison of the devices confirms that position. The Boeing leading edge flap is concavely open on the lower side, has no rib structure extending around the interior perimeter of the flexible flap, is stored compactly when not deployed, has different connecting means, and has a non-resilient nosepiece as part of its surface. Plaintiff’s patent ’623, on the other hand, is a fully enclosed airfoil, is never stored away in any position, has a pin and slot connecting mechanism rather than a series of hinged links and arms, has an interior rib structure as part of its flexible quality, and has no non-resilient members on any part of its surface.

Second, it is apparent that the function of the two devices is also different. The Boeing leading edge flap is not used during cruise, but is only deployed during take-off and landing as a member of the flap system. While deployed it has only one operating position. The flexibility feature is employed only as a means of storing the flap when not in use. Patent ’623, however, was designed and intended to be used as an aircraft wing, possessing the attribute of flexibility so as to allow the wing to assume a variety of shapes to compensate for various flight conditions.

Finally, the results of the two devices are dissimilar. The result of ’623 is to change the shape of an aircraft wing while in flight and thereby provide improved maneuverability and flying characteristics (see exhibit C, patent ’623, column 1, lines 38-42), i. e. compensate for flight loads by altering shape of wing, shake off ice or snow by flexing wings, prevent stalling on turns by varying the shape of one wing to compensate for the reduced speed of the other. The Boeing flexible leading edge flap, however, is used only on take-off and landing as a means to increase lift and prevent stall at low speeds.

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Related

Polk County v. Dodson
454 U.S. 312 (Supreme Court, 1981)
Donald G. Lyon v. The Boeing Company
566 F.2d 676 (Ninth Circuit, 1977)

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Bluebook (online)
438 F. Supp. 345, 193 U.S.P.Q. (BNA) 310, 1975 U.S. Dist. LEXIS 15004, Counsel Stack Legal Research, https://law.counselstack.com/opinion/lyon-v-boeing-co-wawd-1975.