Tate Access Floors v. Interface Architectural Resources, Inc.

132 F. Supp. 2d 365, 2001 U.S. Dist. LEXIS 2482, 2001 WL 193687
CourtDistrict Court, D. Maryland
DecidedFebruary 23, 2001
DocketCiv JFM-00-2543
StatusPublished
Cited by2 cases

This text of 132 F. Supp. 2d 365 (Tate Access Floors v. Interface Architectural Resources, Inc.) is published on Counsel Stack Legal Research, covering District Court, D. Maryland primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Tate Access Floors v. Interface Architectural Resources, Inc., 132 F. Supp. 2d 365, 2001 U.S. Dist. LEXIS 2482, 2001 WL 193687 (D. Md. 2001).

Opinion

OPINION

MOTZ, District Judge.

Tate Access Floors, Inc., and Tate Access Floors Leasing, Inc. [collectively “Tate”], move for a preliminary injunction against Interface Architectural Resources, Inc. [“Interface”], for infringement of claims 1-4 and 8-10 of U.S.Patent No. 4,625,491, a patent on a design for an access floor panel. Tate has previously successfully asserted rights under the same patent against a different defendant before this Court and the Federal Circuit. Tate Access Floors, Inc. v. Maxcess Technologies, 222 F.3d 958 (Fed.Cir.2000) [Maxcess ]. I heard oral argument on the pending motion on January 10, 2001. A preliminary injunction will be granted.

I.

“Elevated floors, also known as ‘access floors,’ typically include an array of square floor panels that are supported at their corners by pedestals, thus providing a space underneath the floor through which wires and other equipment may be routed.” Maxcess, 222 F.3d at 961. Individual panels can be removed for access to equipment between the access floor panels and the sub-flooring. Access to wiring and other skeletal parts of a building tends to be easier and less expensive through access floor panels than through walls or ceilings. Access floor panels can be covered with carpet or any other type of flooring.

The top parts of access floor panels are mounted on steel frames, the construction and design of which are irrelevant to the patent at issue, except for the point that in the past some frames were made partly of wood, requiring fire-retardant treatment. The top parts of access floor panels are commonly made of high pressure laminate, or HPL [“laminate”]. Laminate is made of multiple layers of kraft paper, with a top decorative layer and a transparent layer over that, all forced together under high pressure with resin. See, e.g., Opp’n Ex. 1 at col. 3 ll. 18-44. Laminate is used in many applications other than access floor panels.

Frank Gibson applied for the patent Tate now holds on January 13, 1986. At that time (and as of Gibson’s invention date of December 21, 1983), the desirability of cutting the edges of laminate at an angle, to prevent splintering, chipping, and damage from sharp perpendicular edges, was taught in textbooks, without specific reference to access floor panels. Opp’n Exs. 25B, 26, 28, 30B at WPL-8, 30C at 117. In addition, as of 1981 the standards of the National Electrical Manufacturers Association [“NEMA”] instructed the worker to “[c]hamfer all exposed edges of decorative laminates by filing to prevent possible damage by chipping.” Opp’n Ex. 30E at 14.

The standard access floor panels that were sold at the time of filing, in a style that is still on the market, have different designs, but commonly have an attached trim around their edges. See, e.g., Opp’n Ex. 18 at IP0000183 (showing early floor panel with “edge trim”). The trim is a separate piece of material. It prevents chipping and unattractive marks at the edges of panels, but has several drawbacks. It raises the costs and time of *368 production and installation. Because the trim has to be a separate piece, there is a limit on how thin it can be, limiting the aesthetic potential for a thin border. When such panels are in place in a floor, the attached trim has grooves that tend to collect water and dirt, and the trim may-break or come loose, creating maintenance problems. Finally, the dimensions of the panel can be more accurate when a separate trim is omitted. Opp’n Ex. 1 at col. 2 11. 4-21, col. 2 1. 64 - col. 3 1.17.

Well before the dates of invention and filing, companies including both Tate and Westinghouse, a predecessor of Interface, sold panels with laminate tops. Opp’n Ex. 30 at ¶¶ 6, 11, 12. See also Opp’n Ex. 18 at IP0000179 (indicating square-edged laminate panels from another early manufacturer). Tate sold trimmed panels, Opp’n Ex. 18 at IP0000172, IP0000174, but also made them available without trim: “Vinyl trim edges are normally supplied, but can be eliminated at the architect’s or owner’s election.” Opp’n Ex. 18 at IP0000174. Nothing in the early Tate literature in the record indicates how the untrimmed panels were edged and whether or how the edge treatment revealed the inner parts of the laminate at the edge. Tate’s expert, Steven Cline, remembers seeing a few products on the market with untrimmed laminate tops, without a bevel at the edge. Opp’n Ex. 56 at 76-78.

Westinghouse plainly sold trimmed panels before Gibson filed his patent application, but the evidence as to whether it sold untrimmed panels is conflicting. Richard Talcott, who worked as materials manager and in other positions at Interface or its predecessors, including Westinghouse, describes hand-beveling of the edges of the laminate at an angle of about forty-five degrees. The beveling removed some of the top decorative layer of paper and revealed some kraft paper. Talcott also declares that “[a]n extruded plastic trim strip was typically, but not invariably, applied to the panel edge.” Opp’n Ex. 30 at ¶ 8. A former sales manager of Interface and its predecessors, Thomas D. Bougie, had responsibility for selling access floor panels for the companies from 1967 to 1999. Bougie said that the only untrimmed panels he sold were topped with carpet, not laminate. Bougie said that laminate panels sold by Westinghouse were beveled to be widest at the top, to create an air-tight seal to insulate the air conditioning in the computer rooms in which the panels are typically used. Reply Ex. 27 at ¶ 7.

The available written evidence does not show sales of an untrimmed laminate panel beveled like the accused panel. An “architectural catalogue file” describing certain Westinghouse access floor panels shows “vinyl edge trim” wherever it appears to be specific about the panels’ upper edges. Opp’n Ex. 18 at IP0000159. The brochure advertising the Westinghouse panels specifies that “[a]n extruded trim edge of fire retardant rigid vinyl flush with the surface of the floor covering shall completely encase the edge of the panel.” Opp’n Ex. 30Á at IP0000195. Although the fire-retardant covering might have been necessary because the bases of the panels were then made of wood, the description of the covering as “flush with the surface of the floor covering” is precise. The advertisement further emphasizes that the panels’ “[v]inyl edges butt together precisely to form an air-tight air conditioning plenum.” Opp’n Ex. 18 at IP0000193.

Tate’s patented panel, sold under the trade name Integral Trim, has recessed edges but no attached trim. The decorative top layer does not extend horizontally to the side of Tate’s panel. Instead the decorative layer is cut away, making both the edges of lower layers that partially constitute the laminate and a wider strip of one layer visible around the edges of the panel. This design overcomes the production and maintenance problems posed by attached trim, while generating a contrasting border. A floor made of such panels has a grid pattern made of the contrasting borders around rows of square panels. The diagram in Tate’s patent shows that at *369 the extreme edge of the laminate portion of the panel, there is a flat section of one of the lower layers that comprise the panel. An angled section revealing the edges of each layer slopes from the flat edge to the flat center of the panel, with the decorative layer.

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132 F. Supp. 2d 365, 2001 U.S. Dist. LEXIS 2482, 2001 WL 193687, Counsel Stack Legal Research, https://law.counselstack.com/opinion/tate-access-floors-v-interface-architectural-resources-inc-mdd-2001.