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Credit: Reuters/Beck Diefenbach

Mike Lazaridis, President and Co-CEO of Research In Motion, speaks during BlackBerry's DevCon at the Moscone West Center in San Francisco, California, October 18, 2011.

Co-founders Lazaridis and Douglas Fregin in October disclosed in a regulatory filing they were considering a bid to buy the company.

BlackBerry abandoned its plan to sell itself last month after a two-month review of strategic options and talks with potential buyers that included Facebook, Lenovo and private equity firms such as Cerberus Capital.

(Reporting By Narottam Medhora in Bangalore; Editing by Maju Samuel)