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Goodwill and Other Identifiable Intangible Assets
3 Months Ended
Mar. 31, 2013
Goodwill and Other Identifiable Intangible Assets [Abstract]  
Goodwill and Other Identifiable Intangible Assets
GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS

Acacia’s only identifiable intangible assets at March 31, 2013 and December 31, 2012 are patents and patent rights.  Patent-related accumulated amortization totaled $81,580,000 and $69,850,000 as of March 31, 2013 and December 31, 2012, respectively.

Acacia’s patents and patent rights have remaining estimated economic useful lives ranging from one to nine years.  The weighted-average remaining estimated economic useful life of Acacia’s patents and patent rights is approximately seven years.  The following table presents the scheduled annual aggregate amortization expense as of March 31, 2013 (in thousands):
Remainder of 2013
$
34,424

2014
45,475

2015
44,359

2016
41,451

2017
40,111

Thereafter
99,989

Total
$
305,809



For the three months ended March 31, 2013 and 2012, Acacia paid patent and patent rights acquisition costs totaling $4,010,000 and $2,100,000 (excluding the acquisition of ADAPTIX), respectively.  The patents and patent rights acquired have estimated economic useful lives of approximately one to ten years.

Refer to Note 7 to these consolidated financial statements for additions to patents and goodwill in connection with Acacia’s acquisition of ADAPTIX and the related application of the acquisition method of accounting.

During the three months ended March 31, 2013 and 2012, certain operating subsidiaries recovered up-front patent portfolio acquisition costs from applicable net licensing proceeds prior to the scheduled amortization of such up-front patent portfolio acquisition costs, resulting in the acceleration of amortization expense for the applicable patent related assets. Accelerated amortization expense related to the recovery of up-front patent acquisition costs totaled $483,000 and $442,000, for the three months ended March 31, 2013 and 2012, respectively.