THIS EMPLOYMENT AGREEMENT is made as of this 17th day of April, 2000, by and between MARK
GERCENSTEIN, (the "Employee"), and InterDigital Communications Corporation, a corporation organized and
existing under the laws of the Commonwealth of Pennsylvania (the "Company").
WHEREAS, the Company is engaged in the business of development and marketing digital wireless
telecommunications technologies and components technologies for advanced wireless applications, including
voice and high data rate applications, and the licensing of wireless digital telephone technology and patents, as
such business may be redefined from time to time and described as such in the Company's then current Annual
Report on Form 10-K (the "Business").
WHEREAS, the Company has offered Employee employment as the Chief Executive Officer of the Company
and an appointment to the Company's Board of Directors, and Employee is willing to accept such offer, as set
forth in this Agreement.
NOW, THEREFORE, in consideration of the mutual covenants and obligations contained herein, and intending
to be legally bound, the parties, subject to the terms and conditions set forth herein, agree as follows:
1. Employment and Term. The Company hereby employs Employee and Employee hereby accepts employment
with the Company, as Chief Executive Officer of the Company, (such position, Employee's "Position") for a
period commencing on April 17, 2000 and continuing until employment hereunder is terminated pursuant to the
provisions of Section 10 hereof (the "Term").
2. Duties. During the term of his employment, Employee shall serve the Company faithfully and to the best of his
ability and shall devote his full time, attention, skill and efforts to the performance of the duties required by or
appropriate for his Position. Employee agrees to assume such duties and responsibilities as may be customarily
incident to such position, and as may be reasonably assigned to Employee from time to time by the Board of
Directors of the