Sixth Circuit rules knurling pattern on rifle scopes could be nonfunctional trade dress
The Sixth Circuit Court of Appeals recently held that a reasonable jury could find a design pattern on rifle scopes is “nonfunctional” and thus potentially amenable to trade dress protection. Since 2002, Leapers, Inc. has been selling adjustable rifle scopes with knurling on the surface. Knurling is a common manufacturing technique that allows users to grip and fine-tune products more easily.
Leapers asserted “that it uses a unique knurling pattern that is distinctly ‘ornamental’ and by which customers recognize [Leapers] as the source of the product.” Leapers had executed an exclusive manufacturing contract with a Chinese company, but chose to end that relationship in 2011. The manufacturer agreed to cease using all technical specifications and designs, but later a factory manager from the manufacturer formed his own company and began manufacturing scopes allegedly using Leapers’ knurling design.