Exhibit 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Schedule 13G (including amendments thereto) with respect to the common shares of Spherix Incorporated and further agree that this Joint Filing Agreement be included as an exhibit to such joint filing.

		Rockstar Consortium US LP
Date: July 30, 2013	By:	Rockstar Consortium LLC, General Partner
	By:	/s/ John Veschi
		Name: John Veschi
		Title: Chief Executive Officer
		Rockstar Consortium LLC
Date: July 30, 2013	By:	/s/ John Veschi
		Name: John Veschi
		Title: Chief Executive Officer
Date: July 30, 2013		/s/ John Veschi
		John Veschi