Various suitors have emerged for the company. Fairfax Financial Holdings Ltd. chief Prem Watsa launched a preliminary offer to buy the BlackBerry maker for $4.7-billion (U.S.). BlackBerry co-founders Mike Lazaridis and Doug Fregin revealed in a regulatory filing that they are also considering a run for the company. Other companies, from technology companies to private equity firms, have also looked into the possibility of buying BlackBerry, which still has a valuable cache of intellectual property, according to various reports.