Callaway had patented the use of multiple layers of different materials inside its golf balls.
Titleist said the design was an obvious approach to construction and maintained that its own design was developed independently. Callaway said it would appeal.
"We are extremely pleased with the court's decision, and we hope that this finally brings this long-standing dispute to a close," said Joe Nauman, an evp of Titleist parent Acushnet Co., a unit of Fortune Brands Inc.
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