Court approval of a valid contract shall serve to bind the minor as if the minor executed the contract personally as an adult; and the minor shall be bound to all provisions including the permanent sale of intellectual property rights; provided, however, that the revocation of approval of the contract by the court shall not include the transfer back to the minor of intellectual property rights unless there has been a showing of fraud or misrepresentation by the employer; and, further, that the court approving the contract shall retain the authority to revoke approval of the contract, or modify its terms if assented to by both parties, if the court finds that the well being of the minor requires the disapproval.