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The Court's Proper Role in Construing the Claim of a Design Patent: Should a Picture Be Worth a Thousand Words?

By Robert J. Walters and Charles J. Hawkins
May 01, 2004

The Federal Circuit has held that, as with utility patents, design patents must be construed by the court. See Elmer v. ICC Fabricating, Inc., 67 F.3d 1571, 1577 (Fed. Cir. 1995). This apparently simple mandate has proven difficult in practice. The single claim in a design patent typically consists only of a series of drawings depicting the patented design. The basic premise of Markman ' that a judge's experience with the interpretation of documents will likely allow him or her to produce a more accurate and consistent claim interpretation ' does not intuitively extend to design patents, nor is it apparent that a judge's interpretation of the drawings will be any more proper and uniform than a jury's interpretation.

Moreover, the design patent infringement tests performed by a jury ' the “ordinary observer” and “point of novelty” tests ' require the jury to compare the drawings of the patented design to the accused device and only find infringement where the accused design appropriates the novel features of the design patent. Neither of these tests requires the jury to have a description in words of the drawings for comparison with the accused design.

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