Calvin Klein Accused of Infringing Design Patents for Yoga Pants

Yesterday, Lululemon Athletica Canada filed suit against Calvin Klein, accusing the clothing icon of infringing three design patents for yoga pants. The patents include U.S. Patent Nos. D645,644, D661,872, and D662,281. Lululemon sells products in the United States that embody the patents-in-suit, including under the brand Astro Pant.

According to the complaint:

Certain Calvin Klein bottoms marketed under the "Performance" brand infringe the '644 Patent, the '872 Patent, and the '281 Patent .... These bottoms include, but are not limited to, Style No. 11516241, "performance knee length running tights," and Style No. 11516196, "performance compression overlapping waistband pants" ....

Lululemon points to the following Calvin Klein website as an example of the infringing product: http://www.calvinklein.com/product/index.jsp?productId=12582241

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