premise: The obligations imposed by Section 2 hereof shall not apply, or shall cease to apply, to any Confidential Information if or when, but only to the extent that, such Confidential Information: a. was known to the Receiving Party prior to the receipt of the Confidential Information; or b. was, or becomes through no breach of the Receiving Party's obligations hereunder, known to the public; or c. becomes known to the Receiving Party from sources other than the Disclosing Party under circumstances not involving any breach of any confidentiality obligation; or d. is independently developed by the Receiving Party, as evidenced by the written records thereof.