College Opportunity Tax Credit Act of 2009 - Amends the Internal Revenue Code to increase in 2009 and 2010: (1) the Hope Scholarship tax credit to allow a refundable credit for 100% of qualified tuition and related expenses up to $2,000 and for 50% of such expenses between $2,000 and $6,000; and (2) the lifetime learning tax credit to allow a nonrefundable tax credit for 40% of qualified tuition and related expenses up to $1,000 and for 20% of such expenses between $1,000 and $3,000. Allows the Hope Scholarship tax credit for four years of undergraduate coursework (currently, two years).