VirnetX Holding Corp. and Siemens Enterprise Communications GmbH & Co. KG, and Siemens Enterprise Communications Inc. announced they have signed a patent license agreement, which will allow the company to license certain of its patents to Siemens Enterprise Communications, for a one-time payment to VirnetX and an ongoing reasonable royalty for future sales.

The agreement will extend through the expiration of the licensed patents with respect to certain current and future IP-encrypted products.