Patent 10104052 was granted and assigned to PayPal on October, 2018 by the United States Patent and Trademark Office.
A system to present secure expandable advertisements using an API and cross-domain communication. A content publishing system that hosts a website can implement an expandable advertisement using IFRAMEs that are expanded upon receiving an API call from a third party rich media vendor that hosts the expandable advertisement when the content publishing system and the third party media vendor are of differing domains.