2008

Authentidate Holding Corp. Announces Fiscal 2008 Third Quarter Results
BERKELEY HEIGHTS, N.J., May 8, 2008 - Authentidate Holding Corp. (NASDAQ: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced financial results for the fiscal 2008 third quarter ended March 31, 2008.

Authentidate Holding Corp. Announces Results From Annual Meeting of Stockholders
BERKELEY HEIGHTS, NJ, May 2, 2008 - Authentidate Holding Corp. (Nasdaq: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced the results from the Company's Annual Meeting of Stockholders held on Friday, May 2, 2008, at the Grand Hyatt located in New York.

Authentidate Holding Corp. to Report Third Quarter 2008 Results on Thursday, May 8, 2008
BERKELEY HEIGHTS, N.J., April 28, 2008 - Authentidate Holding Corp. (Nasdaq: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced that it plans to report financial results for the third quarter ended March 31, 2008 on Thursday, May 8, 2008 after the close of market trading.

Leading Provider United Seating & Mobility Implements Authentidate's Inscrybe Healthcare Platform to Standardize and Streamline Administrative Processes
BERKELEY HEIGHTS, N.J., April 28, 2008 - Authentidate Holding Corp. (Nasdaq: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced that United Seating & Mobility, one of the nation's leading providers of comprehensive seating and mobility solutions for people with disabilities, will utilize the Inscrybe^TM Healthcare platform from Authentidate® to facilitate its mobility provisioning process.

Authentidate Holding Corp. To Webcast Annual Meeting of Stockholders on May 2, 2008
BERKELEY HEIGHTS, N.J., April 25, 2008 - Authentidate Holding Corp. (Nasdaq: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced that it will webcast the Company's Annual Meeting of Stockholders scheduled for Friday, May 2, 2008 at 10:00 a.m. ET. This year's annual meeting will be held at the Grand Hyatt located in Midtown Manhattan.

Wheelchair Professionals Selects Authentidate's Inscrybe Healthcare Platform to Streamline Mobility Order Processing
Leading Mobility Claims Administrator to U.S. Insurers Strengthens its Service Commitment to Providers, Physicians and Patients
BERKELEY HEIGHTS, N.J., March 13, 2008 - Authentidate Holding Corp. (Nasdaq: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced that Wheelchair Professionals, one of the nation's leading mobility benefit providers to national and regional insurers in the United States, will utilize the Inscrybe^TM Healthcare platform from Authentidate® to improve how mobility products ordered through the Wheelchair Professionals network are managed.

Authentidate Holding Corp. Announces Fiscal 2008 Second Quarter Results
BERKELEY HEIGHTS, N.J., February 7, 2008, Authentidate Holding Corp. (Nasdaq: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced financial results for the fiscal 2008 second quarter ended December 31, 2007.

Authentidate Holding Corp. to Report Second Quarter 2008 Results on Thursday, February 7, 2008
BERKELEY HEIGHTS, N.J., Jan. 31, 2008 - Authentidate Holding Corp. (Nasdaq: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced that it plans to report financial results for the second quarter ended December 31, 2007 on Thursday, February 7, 2008 after the close of market trading.

Authentidate Announces Strategic Initiatives For Second Half of Fiscal 2008
BERKELEY HEIGHTS, N.J., Jan. 14, 2008 - Authentidate Holding Corp. (Nasdaq: ADAT), a worldwide provider of secure workflow management software and web-based services, today announced a comprehensive plan intended to accelerate revenue growth and enhance shareholder value in the second half of fiscal 2008.