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Acacia Research Corporation [ACTG: CBMX] Chairman to Ring The NASDAQ Stock Market Closing Bell

What:

Paul Ryan, CEO of Acacia Technologies Group will preside over the closing bell.

The Acacia Technologies Group is a leading technology licensing company. Acacia acquires and partners with inventors and companies looking to maximize the licensing value of their patented technology.

Acacia's has 33 technology patent portfolios including: digital streaming, Video-on-demand, Credit Card Fraud Protection, 2 Dimensional Bar Codes, Interactive TV, Ink Jet Printers, and Laptop Computer Connectivity.

Where:

NASDAQ MarketSite -- 4 Times Square -- 43rd & Broadway -- Broadcast Studio

When:

Wednesday, September 28th, 2005 at 4:00 p.m. EDT

Feed Information:

The closing bell is available from 3:50 p.m. to 4:05 p.m. on uplink IA-6 C-band/transponder 17. The downlink frequency is 4040 Vertical; Audio 6.2-6.8. The feed can also be found on Waterfront fiber 1623. If you have any questions, please contact Stephanie Lowenthal at (646) 441-5220.

Photos:

To obtain a hi-resolution photograph of the Market Close, please go to http://www.nasdaq.com/reference/marketsite_events.stm and click on the market close of your choice.

Distributed by Market Wire