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The benefits of clear surface shading in a design patent were highlighted in a recent district circuit decision, which found that purported contour or tangent edge lines added to the drawings to illustrate a transition edge between rounded and flat surfaces were not proper lines to indicate surface contour, but instead claimed features.
IN DESIGN PATENT DRAWINGS, WHEN ARE LINES LINES, AND WHEN ARE
IN DESIGN PATENT DRAWINGS, WHEN ARE LINES LINES, AND WHEN ARE
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Rising Claim Counts
