Diversinet Receives Notice From AllOne Of Intention
To Terminate License Agreement

Toronto, Ontario, January 20, 2010 – Diversinet Corp. (TSX Venture: DIV, OTCBB: DVNTF), a leading provider of secure application platforms for the mobile world, announced today that it has received notice from AllOne Mobile Corporation (“AllOne”) and AllOne Health Group, Inc. (“AHG”) that it has commenced a legal proceeding in Pennsylvania seeking the termination of the September 2008 license and revenue sharing agreement (the “License Agreement”) upon payment of $3,000,000. 

AllOne and AHG have asked the courts for a declaration of the parties’ rights and obligations under the License Agreement.  AllOne and AHG claim that their liability under the License Agreement is limited to $3,000,000.  The complaint provides that, should the court provide judgment in AllOne and AHG’s favor, AllOne would pay $3,000,000 to Diversinet and terminate the License Agreement.

Diversinet is seeking counsel’s advice and will review all options and available remedies.  Diversinet believes that the amounts due under the License Agreement, if terminated at this time, are substantially greater than AllOne and AHG’s claim. 

In September 2008, Diversinet entered into the License Agreement with AllOne, a wholly owned subsidiary of AHG, which in turn is a wholly owned subsidiary of Hospital Service Association of Northeastern Pennsylvania (“HSA”) to cross license certain software and share revenues from the worldwide sales.  HSA currently owns 6,956,152 common shares of Diversinet, representing approximately 14.5% of the issued and outstanding common shares of Diversinet.

About Diversinet Corp.
Diversinet Corp. (TSX Venture: DIV, OTCBB: DVNTF) is a leading provider of secure application platforms for the mobile world utilizing wireless authentication and access solutions that secure the personal identity, transactions and data of consumers over almost any mobile phone or handheld device.  Diversinet’s reliable, end-to-end MobiSecure Wallet and Vault products provide global, secure and cost effective applications to mobilize personal health records, financial services transactions and identity protection management.  Connect with Diversinet Corp. at www.diversinet.com.

The Private Securities Litigation Reform Act of 1995 and Canadian securities laws provide a "safe harbour" for forward-looking statements. Certain information included in this press release (as well as information included in oral statements or other written statements made or to be made by the company) contains statements that are forward-looking, such as statements relating to anticipated future revenues of the company and success of current product offerings and the term of the agreement with AllOne Mobile Corporation. Such forward-looking information involves important risks and uncertainties, including the uncertainty of the outcome of the proceedings initiated by AllOne, that could significantly affect anticipated results in the future and, accordingly, such results may differ materially from those expressed in any forward-looking statements made by or on behalf of the company. For a description of additional risks and uncertainties, please refer to the company's filings with the Securities and Exchange Commission available at www.sec.gov and Canadian securities regulatory authorities available at www.sedar.com.

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