BERKELEY HEIGHTS, N.J., Feb. 28 /PRNewswire-FirstCall/ -- Authentidate Holding Corp. , a worldwide provider of secure enterprise workflow management applications, today announced that the United States District Court for the Middle District of Florida, Tampa Division, dismissed with prejudice a patent infringement case against the company filed by TimeCertain, LLC, in August 2005. The claim by TimeCertain alleged that Authentidate Holding Corp. and its products and systems incorporating secure time stamping technology, including but not limited to the USPS Electronic Postmark, infringed on certain TimeCertain patents.

"We believed from the start that this complaint was totally unwarranted," stated Suren Pai, President and CEO of Authentidate. "The dismissal of this case brings to light Authentidate's commitment to vigorously defend and enforce the company's intellectual property rights. We take intellectual property matters very seriously and will not stand idle when years of research and development come under attack," concluded Pai.

About Authentidate Holding Corp.

Authentidate Holding Corp. is a worldwide provider of secure enterprise workflow management applications that incorporate its proprietary and patent pending content authentication technology in the form of the United States Postal Service(R) Electronic Postmark(R) and electronic signing solutions. Authentidate also provides secure document management solutions, and enterprise network security products and services.

The company operates its software and services businesses in three segments: the Security Software Solutions segment (including Authentidate, Inc., Trac Medical Solutions, Inc. and Authentidate International AG), the Document Management Solutions segment (Docstar Division) and the Systems Integration segment (DJS). For more information, visit the company's website at http://www.authentidate.com/.

This press release contains forward-looking statements within the meaning of section 27A of the Securities Act of 1933 and section 21E of the Securities Act of 1934. When used in this release, the words "believe," "anticipate," "think," "intend," "plan," "will be," "expect," and similar expressions identify such forward-looking statements. Such statements regarding future events and/or the future financial performance of the Company are subject to certain risks and uncertainties, which could cause actual events or the actual future results of the Company to differ materially from any forward-looking statement. Such risks and uncertainties include, among other things, the availability of any needed financing, the Company's ability to implement its business plan for various applications of its technologies, related decisions by the USPS, the impact of competition, the management of growth, and the other risks and uncertainties that may be detailed from time to time in the Company's reports filed with the Securities and Exchange Commission. In light of the significant risks and uncertainties inherent in the forward-looking statements included herein, the inclusion of such statements should not be regarded as a representation by the Company or any other person that the objectives and plans of the Company will be achieved.

Investor Contacts: Media Contacts: Todd Fromer / Garth Russell Shelley Pfaendler KCSA Worldwide KCSA Worldwide 212-896-1215 / 212-896-1250 212-896-1248 tfromer@kcsa.com / grussell@kcsa.comspfaendler@kcsa.com

CONTACT: investors, Todd Fromer, +1-212-896-1215, tfromer@kcsa.com, or
Garth Russell, +1-212-896-1250, grussell@kcsa.com ; media, Shelley Pfaendler,
+1-212-896-1248, spfaendler@kcsa.com ; all of KCSA Worldwide

Web site: http://www.authentidate.com/