POWER OF ATTORNEY
For Executing Forms 3, 4 and 5
of the
United States Securities and Exchange Commission

KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and appoints
each of Jannie K. Lau, Amy A. Miraglia, Claire H. Hanna and Matthew S. Shaw
signing singly as my true and lawful attorney-in-fact to:

(1) execute and file for and on behalf of the undersigned, in the undersigned's
capacity as a director of InterDigital, Inc. (the "company") Forms 3, 4 and 5 in
accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules thereunder;

(2) do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 3, 4 or 5
and timely file such form with the United States Securities and Exchange
Commission and any
stock exchange or similar authority; and

(3) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the interest of, or legally required by, the undersigned, it being understood
that the documents executed
by such attorney-in-fact on behalf of the undersigned pursuant to this power of
attorney shall be in such form and shall contain such terms and conditions as
such attorney-in-fact may approve in his or her discretion.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform each and every act and thing whatsoever requisite,
necessary or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all
intents and purposes as the undersigned might or could do if personally present,
with full power of substitution or revocation, hereby ratifying and confirming
all that such attorney-in-fact, or his or her substitute or substitutes, shall
lawfully do or cause to be done
by virtue of this power of attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in
such capacity at the request of the undersigned, are not assuming, nor is the
company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934 nor shall they be liable or accountable in any respect for
any act or omission undertaken in good faith and not in reckless disregard of
the obligations assumed hereunder.

This power of attorney shall become effective immediately, and shall remain in
full force and effect until the undersigned is no longer required to file Forms
3, 4 and 5, with respect to the undersigned's holdings of and transactions in
securities issued by the company, unless
earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

EXECUTED this 21st day of March, 2017.

/s/ Joan Gillman
Joan H. Gillman



ACKNOWLEDGEMENT



State of Connecticut			:
				:	SS: Westport
County of Fairfield		:


ON THIS, the 21st day of March 2017, before me, a notary public, the
undersigned, personally appeared Joan H. Gillman, known to me (or satisfactorily
proven) to be the person whose name is subscribed to the within power of
attorney, and acknowledged that he/she executed
the same for the purposes therein contained, and desired that it be recorded as
such.

IN WITNESS WHEREOF, I hereunto set my hand and official seal.



/s/ Kelley A. Mulhall
Notary Public

My commission expires: July 31, 2019