The plaintiffs, Fieldturf USA and Tarkett Inc. (collectively, “Fieldturf”) filed a patent infringement action against Astroturf LLC (“Astroturf”). In defense, Astroturf intended to present expert testimony on anticipation showing that certain Fieldturf technical information predated the patent-in-suit.
Based on the technical information, Astroturf’s expert created replicas of the fields and he then used multiple techniques to measure the infill depth. Before trial, Fieldturf filed a motion in limine that sought to exclude the replicas, contending that Astroturf made most of the decisions regarding the replicas’ size and materials, and directly participated in the replicas’ creation. Fieldturf also argued that the replicas did not control for multiple factors — such as the weight and density of the carpet, whether the sand and rubber was laid in separate layers or as a mixture, the size of rubber particles, and humidity — that impact the infill depth.
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