Delaware
(State
or Other Jurisdiction
of
Incorporation)
|
000-26068
(Commission
File
Number)
|
95-4405754
(I.R.S.
Employer
Identification
No.)
|
ACACIA
RESEARCH CORPORATION
|
|
Date: April
23, 2009
|
By: /s/
Paul R. Ryan
|
Name: Paul
R. Ryan
|
|
Title:
Chairman and Chief Executive
Officer
|
Exhibit
Number
|
Description
|
99.1
|
Press
Release dated April 23, 2009, of the
Registrant.
|