UPDATE 1-InterDigital Q3 results top Street

* Q3 EPS $0.69 vs est $0.58

* Q3 revenue $75.5 mln vs est $75.0 mln

* Shares up 7 percent

Oct 28 (Reuters) - Wireless technology firm InterDigital Inc's (IDCC.O) third-quarter profit more than tripled and blew past market estimates, driven by revenue from new patent license agreements and lower operating expenses.

InterDigital, which has been locked in patent battles with bigger rivals like Nokia Oyj (NOK1V.HE) and Samsung Electronics (005930.KS), signed a license agreement with Samsung in January after settling the dispute.

Earlier this month, the company said it might appeal the ruling by the U.S. International Trade Commission (ITC) that Nokia did not infringe on its patents.

InterDigital said that the recent ITC ruling does not alter its confidence about adding new licensees and that it is optimistic about the growth prospects for the 3G handset market.

Third-quarter net income was $30.6 million, or 69 cents a share, compared with $9.2 million, or 20 cents a share, last year.

Revenue rose 37 percent to $75.5 million, with patent licensing revenue increasing 38 percent to $73.0 million.

Analysts on average were expecting the company to earn 58 cents a share, on revenue of $75.0 million, according to Thomson Reuters I/B/E/S.

Operating expenses fell 31 percent to $28.9 million.

Shares of the King of Prussia, Pennsylvania-based company were up 7 percent at $19.88 in post-market trading. They closed at $18.57 Wednesday on Nasdaq.

For the alerts, double-click. [ID:nWNAB6115] (Reporting by Deepti Govind in Bangalore; Editing by Anne Pallivathuckal)