Genlyte Thomas Group LLC v. Arch Lighting Group, Inc.

278 F. App'x 1004
CourtCourt of Appeals for the Federal Circuit
DecidedMay 14, 2008
DocketNos. 2007-1405, 2007-1406
StatusPublished

This text of 278 F. App'x 1004 (Genlyte Thomas Group LLC v. Arch Lighting Group, Inc.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Federal Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Genlyte Thomas Group LLC v. Arch Lighting Group, Inc., 278 F. App'x 1004 (Fed. Cir. 2008).

Opinion

BRYSON, Circuit Judge.

Genlyte Thomas Group owns U.S. Patent No. 5,038,254 (“the '254 patent”), which relates to lighting systems for use in hospital rooms. In 2005, Genlyte sued Arch Lighting Group, Inc., (“ALS”) for infringement of the '254 patent. Following a six-day trial, the jury returned a verdict that one of ALS’s products literally infringed claim 1 of the '254 patent and two other products infringed claims 1 and 3 of the patent under the doctrine of equivalents.

Claim 1 of the '254 patent reads as follows:

1. A medical lighting system comprising:
a body;
means for ceiling-mounting said body;
a first light fixture within said body oriented to direct light downwardly to a [1006]*1006selected reading area under said body; [and]
a second light fixture within said body oriented to direct light downwardly and outwardly to a vertical wall surface outwardly adjacent from said body whereby light is reflected back to a broad area under said body.

Claim 3 is the same as claim 1 except that it adds the following limitation: “a third light fixture within said body oriented to direct light downwardly under said body to a selected patient examination area.”

ALS has appealed from the district court’s denial of its motions for judgment as a matter of law (JMOL) and for a new trial. Genlyte has cross-appealed from the district court’s denial of its motion for relief from the judgment. We affirm.

I

A

ALS argues that JMOL should be granted because the jury verdict is not supported by substantial evidence. In particular, ALS contends that there is no evidence that its products contain structure for mounting the body of the lighting system to the ceiling that is the same as or equivalent to structure in the specification corresponding to the “means for ceiling-mounting” in claims 1 and 3.

ALS initially raised the issue of the proper construction of “means for ceiling-mounting” at the Markman hearing. During the hearing, ALS agreed with the court that resolution of that issue should be postponed until it filed its summary judgment motion. ALS, however, did not raise that issue in its summary judgment motion. In the Joint Pretrial Memorandum, ALS agreed that “the Court set forth the meaning of the claim terms in dispute during the June 20, 2005 Markman hearing,” even though the court did not at that time construe the means for ceiling-mounting limitation. At trial, Dr. Ian Lewin, ALS’s expert, conceded that the accused products satisfied the “means for ceiling-mounting” limitation. When asked whether his “opinion assumes and concedes the existence of all of the elements of claim 1 and 3, except the second light fixture,” Dr. Lewin responded, “Yes.” That statement acknowledged that the “means for ceiling-mounting” limitation was present in each of the accused products.

In addition to that evidence, Genlyte’s expert, Thomas Lemons, testified that ALS’s accused devices were all mounted to the ceiling by use of a lip or flange that rests on a T-bar ceiling grid like a conventional troffer. The patent described the invention as a “ceiling-mounted lighting system” in which the lighting fixtures are packaged in a two-foot by four-foot configuration so as to “replace a conventional troffer.” '254 patent, col. 1,11. 3-4; col. 3, 11. 12-14. Mr. Lemons testified that the reference to troffers would convey to a person of skill in the art the structure to be used to mount the light fixtures: “Every electrician would know, if you tell him you’re going to install troffers he instantly knows that it’s going to be a hung ceiling and you fit the fixture up into it and set it down on the T bar.” According to Mr. Lemons, the accused products all contained lips or flanges that enabled them to be installed on a grid ceiling. That evidence was sufficient to satisfy the “means for ceiling-mounting” limitation.

B

ALS also asserts that Genlyte did not prove that the accused products satisfied the first and second light fixture limitations. The essence of ALS’s argument is that the first and second light fixtures must be oriented to direct light in different [1007]*1007directions, with the first fixture aiming more light to a reading area and the second fixture aiming more light to a wall.

The trial court adopted the construction of the first and second fixture limitations set forth in ALS’s proposed jury insti’uctions. For the first light fixture, the trial court instructed the jury that the phrase “oriented to direct light downwardly to a selected reading area under said body” means “set or arranged to direct or aim more light in a downward direction than in an upward or outward direction to a reading area.” For the second light fixture, the court instructed the jury that the phrase “oriented to direct light downwardly and outwardly to a vertical wall surface outwardly adjacent from said body” means “set or arranged to direct or aim more light in a downward and outward direction than in an upward direction to a wall.” Without objection, the court did not require the jury to find that the first and second light fixtures had any specific orientation relative to one another. ALS did not press for a different construction of the first and second light fixture limitations before the district court. Before us, counsel for ALS specifically disclaimed any argument that the jury instructions with regard to those limitations were incorrect. We therefore have no occasion to reach the question whether those instructions embodied a correct claim construction.

Under the court’s claim construction, there is sufficient evidence that each of the accused devices satisfied the first and second light fixture limitations. As noted above, ALS’s expert conceded that only the second light fixture was in dispute. ALS also stipulated that the first fixture “has the same light distribution pattern in every ALS MulTmed product” and that the first fixture in the ALS products “directs] light downwardly to a selected reading area under the fixture.” Genlyte’s expert, Mr. Lemons, testified about experiments he performed using ALS products that showed that the reading light in the ALS products directed a substantial amount of light to the reading area of the bed. Thus, even without the concession of ALS’s expert, there is legally sufficient evidence from which the jury could find that the first light fixture was present in the accused devices.

ALS stipulated that each of the second light fixtures in its accused devices “has the same light distribution pattern in every ALS MulTmed product” and “does not produce any upwardly directed light.” Given the unchallenged construction of the second fixture limitation as “set or arranged to direct or aim more light in a downward and outward direction than in an upward direction to a wall,” the only question is whether the second light fixture in the accused devices directs light “in a downward and outward direction ... to a wall.” Mr. Lemons testified that the second light fixture in the ALS devices directs light downwardly and outwardly to a wall. That testimony provided a legally sufficient basis for the jury to find that the claimed second light fixture was present in each of the accused devices.

C

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278 F. App'x 1004, Counsel Stack Legal Research, https://law.counselstack.com/opinion/genlyte-thomas-group-llc-v-arch-lighting-group-inc-cafc-2008.