Where a firm’s engagement letter made an agreement between parties a written contract for purposes of the statute of limitations, even though the parties did not sign the engagement letter.The 7th U.S. Circuit Court of Appeals affirmed in part and reversed in part a decision by U.S. District Judge Sara L. Ellis.Blanchard & Associates, a law firm, was formerly based in Chicago. Its sole proprietor is a Tennessee resident. Lupin India is a pharmaceutical company incorporated under the laws of India. Its subsidiary, …