Macy’s is suing Martha Stewart Living Omnimedia Inc, accusing the company of breach of contract for entering into an agreement to sell certain products at stores run by its rival J.C. Penney Co Inc according to Reuters.

Macy’s  claims Martha Stewart Living give its’ exclusive right to manufacture and sell certain products under a 2006 agreement, according to a New York state Supreme Court filing on Monday.

But in December, J.C. Penney grab up a large stake in Martha Stewart Living and announced plans to open shops within its stores, starting in 2013, that sell Martha Stewart-branded goods.

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