Attached files
| file | filename |
|---|---|
| 10-K - ACACIA RESEARCH CORPORATION - ACACIA RESEARCH CORP | acacia_10k-123109.htm |
| EX-18.1 - PREFERABILITY LETTER - ACACIA RESEARCH CORP | acacia_10k-ex1801.htm |
| EX-31.1 - CERTIFICATION - ACACIA RESEARCH CORP | acacia_10k-ex3101.htm |
| EX-21.1 - SUBSIDIARIES - ACACIA RESEARCH CORP | acacia_10k-ex2101.htm |
| EX-31.2 - CERTIFICATION - ACACIA RESEARCH CORP | acacia_10k-ex3102.htm |
CONSENT OF INDEPENDENT
REGISTERED PUBLIC ACCOUNTING FIRM
We have
issued our reports dated February 25, 2010, with respect to the consolidated
financial statements and internal control over financial reporting included in
the Annual Report of Acacia Research Corporation on Form 10-K for the year ended
December 31, 2009. We hereby consent to the incorporation by reference of said
reports in the Registration Statements of Acacia Research Corporation on Forms
S-3 (Nos. 333-122452, 333-133529, 333-157623) and on Forms S-8 (Nos.
333-102181, 333-109352, 333-119811, 333-127583, 333-131463,
333-140280, 333-144754, 333-149849, 333-157626).
/s/ GRANT
THORNTON LLP
Irvine,
California
February
25, 2010