Hershey sues over baking pan

When is a rectangle a case of intellectual property?

The Hershey Co. says it's when the rectangle is divided into a dozen smaller rectangles — and mimics the design of its signature chocolate bar.

The Pennsylvania-based company is suing Williams-Sonoma Inc. over the shape of a brownie pan the chocolate maker says "embodies and mimics" its candy bar design.

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Hershey is seeking an injunction to block the upscale retailer from further sales of the baking pan.

Williams-Sonoma spokeswoman Leigh Oshirak says the company has no immediate comment on the dispute.

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Hershey's suit says its chocolate bar is more than a century old, and has enjoyed trademark protection since 1968.

The suit is filed in federal court in Harrisburg.