premise: Information shall be deemed not to be confidential if such information is or becomes publicly known through no wrongful act of the receiving party, or is already known by the receiving party as evidenced by competent proof thereof, or is approved for release by the prior written approval of the disclosing party, or is rightfully received by the receiving party from a third party without restriction and without breach of this agreement, or is disclosed by the disclosing party to a third party without a similar restriction on the rights of such third party, or is independently developed by the receiving party without the use of the Confidential Information.